In five directions space appeared to be starless and black. Only a few nebulous patches of light revealed the existence of distant star systems and galaxies which were brilliant enough to be seen across the tremendous abyss of the absolute void.

   In the sixth direction lay a glittering band of countless stars which gradually attenuated and became less brilliant above and below. In its peripheral zones were dark nebula spots of blackness. There was void in five directions but in the sixth was the Milky Way.

   In this region of space bounded on the one side by an unimaginable number of stars and forms of life, and on the other by an endless vacuum, there was a lonely sun.

   This was the dying, reddish sun known as "Outside," which was accompanied by three dead planets. One of these planets had been named "Mechanica" by the Terrans. Many thousands of light years removed from the edge of the Milky Way, the system waited here for the end of time.

   For many days now, "Mechanica" had been circled by a small metal sphere-small, that is, in relation to the immensity of the universe. Having a diameter of 100 meters it contained a crew of 150 men along with their commander. Their mission was plain and simple: to determine whether or not the 2nd planet of the sun, "Outside" still harboured organic or mechanical life!

   Six monotonous days had passed. Incessantly the electronic scanning equipment had been probing the surface and searching the surrounding areas of the void. The photographic cameras had been going without a stop, capturing every square meter of the planet. Down there nothing had moved that they hadn't seen before.

   When the time allotted to the operation expired, the commander of the Manila ceased his observation of "Mechanica" and ordered a return flight to the system of Arkon where his report was expected by Perry Rhodan, Administrator of the Earth. At about this time, on July 5th of the year 2112, Perry Rhodan, Atlan and Reginald Bell were seated in a conference chamber of the Crystal Palace where they were discussing the general situation. With them were several officers from Terra and Arkon in addition to Commodore Jefe Claudrin, who was commander of the Terrans' new flagship, the gigantic superbattleship, Theodorich.

   Six difficult years lay behind them. Of course since the Arkonide robot brain had been destroyed they had succeeded in apprehending almost all of the pilotless robot ships of the Imperium, but there were still a few thousand units wandering around in unknown coordinates through the boundless reaches of the cosmos, and since they were without course or guidance they were being seized and converted by revolting colonial races. The rebels believed that the time had come in which they might be able to shake off the imagined yoke of Arkon. Rhodan had had his hands full to maintain a position of respect for himself and Atlan. The majority of the incalcitrant colonial races had been brought back into the structure of the Imperium which, although still ruled by Atlan, as the Imperator Gonozal VIII, was more than ever dependent upon Rhodan's support. The real rulers of the Arkon Imperium were now the Terrans. They had already taken over the inheritance that Khrest had predicted for them-but it weighed heavily upon them.

   However, the worst thing to contend with was not such internal enemies as the Aras and the Springers but a new danger which had first become really acute s ix years ago. Out on the rim of the galaxy, enemies who were bodiless and invisible had emerged from unseen realms, and also farther out in the intergalactic abyss the Terrans had had their first encounter with members of a robot civilization which struck out at all organic life in a blindly furious attempt to destroy it. Apparently the invisible foe and the robots were at each other's throats but this was hardly a consolation inasmuch as both of them also attacked the Terrans wherever their paths crossed.

   One of the officers had just finished a presentation and was rolling up his charts. Another officer got up and began to express his views which were partially a flagrant contradiction of the position his predecessor had taken.

   Bell leaned over and whispered to Rhodan next to him: "If it keeps up like this, Perry, we'll never learn what gives with these robots. All we've gotten so far is guesswork that doesn't prove a thing."

   "Wait it out, Bell," Rhodan whispered back. "We have to hear from all the experts before we can draw a conclusion."

   Bell resigned himself to listen in silence. He turned his attention to the science officer of a research team which had been attempting to analyze the nature of the unknown assailants.

   "...so in this respect I have to seriously contradict my colleague," he was saying. "I'll admit it must seem improbable to us that robots can have human feelings but in the case at hand I consider it to be a proven fact that this enemy thinks independently and is in no way guided by an organic intelligence. I also believe it's out of the question that these things are responding to some still effective programming circuits. I'm sorry but I must beg you to adjust yourselves to the fact that we are dealing with an emotionally-driven robot logic."

   The mathematician had to pause at this point because some of the other officers shook their heads in vehement disagreement. One of them even verbalized their reaction: "Absolutely insane!"

   Rhodan remained silent, as did Atlan and Bell.

   The officer waited until the excitement subsided and then he continued. "I will repeat: we must revamp our line of thinking and consider new possibilities, however unlikely they may seem. The empirical data so far obtained with robot technology have proved to be insufficient. Just remember that without any effort the enemy immediately recognizes and attacks organic beings, solely in response to thought impulses and brain waves. So far any attempt at camouflage has failed. Do you think that a robot with purely mechanical means can differentiate between a machine and a man?"

   Two or three of the officers spoke all at once. Finally they organized themselves and one became the spokesman.

   "My group is still of the opinion that the civilization which built the so-called fragment ship was created by organic intelligences, and all they did was man the vessel with practically perfect robots. I recall the seed ship from 'Mechanica' and the harvest ship as well as the scout vessel. They were perfectly robotic but they originated from organic sources. My group will go even farther than that. We maintain that the enemy is from 'Mechanica' and that they are a remnant of some long forgotten experiment. Just as the harvest ship was able to locate food spores, the fragment ship locates organic life and destroys it. Perhaps these robots were created as a kind of insulation against the rest of the galaxy."

   When the officer sat down, Rhodan nodded to another one, who got up to speak.

   "My group also takes the view that organic intelligences created the fragment ships as well as their robot crews, but contrary to the last speaker we maintain that these intelligences still exist and are operating according to a plan. They are sending out their robots to make contact with us, to probe our strength and test our reactions. More than that I have nothing to say."

   Rhodan waited but no one else asked to have the floor. He stood up and spoke to them slowly, with careful emphasis on every syllable. "Gentlemen, I thank you for your efforts. What we have here are three theories, the first of which I should like to reject not only on an emotional basis but also from the standpoint of logic. There is no such thing as robots with feelings, Lieutenant! That leaves us with two opinions. I believe you may have something with the idea that 'Mechanica' might be the robots' base planet. With that thought in mind I sent out the Manila to make some observations there. We can expect the ship to be back today and I'll inform you promptly of the results of the investigation. May I request that you continue to remain at the disposal of Atlan and myself."

   When they had gone, Jefe Claudrin's mighty voice rumbled like thunder. "I still think the idea of sending out robots as advance agents isn't so dumb, Chief. So I wouldn't discard theory B."

   Jefe Claudrin had been "environmentally adapted." His parents had lived on Epsal, a planet with twice the gravity of Earth. Claudrin was only about 5 feet tall but he was extraordinarily strong-boned and wide of frame. His hair was red, his voice was thunderous, and he didn't seem to have a nerve in his body. He was a combination of sharp intelligence and cold blooded composure, so it was little wonder that Rhodan had appointed him to be the commander of his new flagship. The Ironduke had been taken over by Hunts Krefenbac who had been promoted to the rank of colonel.

   Rhodan nodded in agreement with him. "In both cases we have the common denominator that the robots were built by organic intelligences. I can't imagine robots capable of reproducing themselves-nor do I wish to imagine such a thing."

   "But it might add a human touch," commented Bell with a grin. Suddenly, however, he became serious. "But what the devil's the issue about whether or not they have feelings?"

   "It's the whole issue," replied Atlan who had remained silent until now. "Robots with emotions and feelings would mean the end of the humanoid races. Any such machine would virtually have to revolt against men because everything men make them do would be degrading to them. On that basis alone it would be insane to invent such machines. Even to think of it is insane."

   "At any rate we know we're dealing with robots who react differently than we're accustomed to," Rhodan cautioned them. "They are unpredictable and unusually aggressive. Yet at the same time they try to preserve their existence as much as possible. They never attack rashly or blindly but always with a shrewdly worked out plan. That's what makes them so dangerous. If we only knew where they came from we'd have part of the battle won. They may not be from our galaxy at all."

   The ensuing silence was oppressive. Bell, Atlan and Claudrin looked at him speechlessly. Of course such thoughts had occurred to them but the fact that anyone could have his origins in another galaxy-millions of light years away was so startling that no one had ventured to speak about it openly until now.

   From another island universe...!

   Every contact with the robots-and also with the invisible ones-had occurred on the edge of the Milky Way but never within it. In fact mostly out in the abyss, as they referred to the void between the galaxies. Always the enemy had come from a direction in which no stars of the known galaxy existed. Out there somewhere could there exist a home planet of this dangerous race, if one could designate robotic life as a race?

   Rhodan noted expressions of horror, disbelief and even fear in the faces of his companions. Before he could reassure them, the palace intercom before him started to ring.

   "A Major Salzburger wishes to make a report, sir. He says it's urgent."

   "Please bring him to conference room 17," Rhodan answered. As he switched off the connection he looked at his friends. "Now we'll see if our guesswork has been substantiated," he said. "Salzburger is the commander of the cruiser Manila, the ship I sent to 'Mechanica.' Bell, set up the projector. We'll want to take a look at the films they've brought back. Atlan, please make preparations for a photo analysis. Come on-let's not lose any more time."

   Conference room 17 was on the same floor. It was equipped with all modern facilities and almost looked like a laboratory. Sound and data tapes, positronic consoles and a fully automatic analysis setup were under control of a special robot. Bell got busy at once with his tasks while Rhodan and Atlan waited near the door for Salzburger. They conversed in low tones.

   "Yesterday," said Atlan, "we gave Patriarch Simodes his freedom after his clan gave their oath of loyalty to the Imperium. Do you know about it?" When Rhodan shook his head negatively, he explained. "Simodes had hunted down two of our wandering robot ships and was getting ready to put up a battle when we demanded them back. His whole clan revolted and accused me of treachery. Well anyway, it appears the affair is settled."

   "Perhaps for Simodes," said Rhodan pensively, "but not for many others. A lot of them still believe that Arkon's power was broken when the robot brain was destroyed. And besides I'm wondering that the Akons have kept so quiet. They couldn't have had a better opportunity for taking us by surprise."

   "Your base in the Blue System has them worried," said Atlan appreciatively. "My worthy ancestral race will take care not to make trouble for you. They've learned some bitter lessons in the past when they tried it."

   The door opened. An officer in a major's uniform stepped inside and saluted when he saw Rhodan. The greeting was slightly casual but respectful. The wrinkles in his face did not give a good indication of his age but his very gray hair revealed that he had to be at least sixty years old.

   "Returning from reconnaissance flight, sir. Nothing of significance has been observed."

   "Nothing of significance, you say? They told me on the intercom that this was urgent."

   "With or without any findings, sir, I felt the report was urgent enough for me to contact you at once. Wasn't that right, sir?"

   Major Salzburger looked so bewildered that Rhodan had to smile. "Yes, of course. It was just a superfluous remark, Major. So now what's new on 'Mechanica?' Do you consider the planet of the vanished civilization to be the origin of these cosmic robots?"

   "To make a long story short, sir no."

   "So you observed nothing?"

   "Not a thing, sir. I have had the films edited that we took while in orbit. The film report only runs about five minutes. May I screen it for you?"

   While the major's two aides and Bell prepared the film, Salzburger continued his report.

   "We had a whole week to keep a surveillance on the space surrounding 'Mechanica.' The instruments didn't detect a single ship. It can be stated with certainty that during that time there was no space vessel anywhere within 500 lights years of 'Mechanica.' The planet itself is unchanged. The little harvest ships are still cruising around over the surface, searching in vain for food spores. No more of the fat moss is growing in the sandy deserts. The robot civilization doesn't exist any more, to say nothing of its creators. The central control station has been destroyed. Nothing has been altered in its vicinity." He noticed that Bell was giving him a ready signal. "But see for yourself, sir."

   The room darkened and the screen became bright. In 3-D colour they saw the alien landscape of the mysterious planet. At a distance from them of more than 50000 light years it circled a dark red dying sun which coursed its lonely way through the universe. Deserts alternated with scenes of crumbling cities where there was no longer a sign of life. The place where the central station had been for automatically controlling the defences was now nothing but a crater: In the upper reaches of the atmosphere the harvest ships were still diligently searching. But that was all there was to see.

   When the screen darkened and the lights went on, Rhodan spoke. "In the past six years nothing has changed on 'Mechanica.' There doesn't seem to be any confirmation of our theory that the robots could come from there-but we can never be sure. Perhaps it could have still been their home in the far distant past. At least the related circumstances point to that possibility. For one thing, take the anesthetizer weapon that we brought from 'Mechanica.' The robots use the same weapon. Where would they have gotten that but from the entities who once inhabited 'Mechanica?' There are other related items that we still don't understand but which we mustn't lose sight of. Very well then, we have no proofs but the suspicion remains."

   "I'm sorry, sir, that I couldn't do more," said Major Salzburger. "But if 'Mechanica' still has anything to do with these curious robots, something would have had to change on the surface. That's why, quite frankly, I doubt your theory concerning related circumstances."

   Rhodan was always pleased when his subordinates had their own opinions and didn't blindly share his own views. So he gave Salzburger a friendly smile. "I thank you, Major. You may return to the Manila and await further instructions. For the time being, station yourself on Arkon 3 but keep on standby for action."

   Salzburger saluted and took his film and two officers out of the room. Bell watched him go, somewhat disappointedly, and when the door closed he made a sour comment.

   "Well, that sure wasn't much. We've gotten nowhere."

   This fact seemed to be of little concern to Rhodan. "The next flight of the Theodorich will take us quite a bit farther, I hope. Of course it could also take us to Kingdom Come. That will depend entirely upon the circumstances."

   Rhodan's announced flight of the Theodorich was delayed a few more days because they had to wait for some special equipment which had been requisitioned from Earth. The Swoons who had settled on Mars were still at work. In the past years and decades the little "cucumber people," as Bell had disrespectfully called them, had developed into the best micro-technicians in the galaxy. Actually that's what they had always been but under Rhodan's direction they were now working on the right side of the law.

   As Major Salzburger was finally receiving orders to pick up the completed mental-absorbers from Mars, Rhodan called Pucky to him.

   The mousebeaver appeared before Rhodan had closed his mouth. As a telepath he had intercepted Rhodan's thoughts and hadn't waited for the verbal summons. Since at the same time he was also a teleporter, he materialized directly in front of the startled major in the Control Central of the Theodorich.

   "Well, what's the matter?" he chirped at Salzburger. "Probably never seen a teleporter, is that it?"

   "Seldom so unexpectedly," reported the major as he nodded to Rhodan. Since he had received his orders he left the Control Central.

   Pucky watched him go, slightly dumb founded. "Well, he was sure in a hurry," he commented disappointedly. Then he showed his grinning incisor tooth. "I'm sorry-you'll have to tell me what you wanted of me. I didn't catch all of it."

   While Bell still restrained himself, Rhodan threatened with his finger. "You were mentally spying again, admit it. At any rate-you're flying with the Manila to Earth ..."

   "Terra!?" cried Pucky in shrill disappointment. "Now when everything's starting to happen around here, I'm supposed to go to Terra? What could I do there? Am I a babysitter...?"

   "Let me finish," said Rhodan somewhat impatiently. "You will go to Terrania and..."

   "No!" Pucky looked as if he'd been insulted. "I won't go-I'm staying here!" He glanced at Bell. "If Fatso stays, so do I!"

   Rhodan raised a brow at him in surprise. "Who said you were going to remain in Terrania? Salzburger is picking up the mental-absorbers from Mars and he's to come back here as soon as possible. But you're also to return with him, Pucky."

   The incisor tooth gleamed again. "Aha... I'm coming back? Well-of course that's a different picture. But what am I supposed to do in Terrania if the Manila's going to Mars?" By now he seemed to have recomposed himself. "I'd like to have said hello to the kookies." He always referred to the Swoon as the "kookies," which was short for "cucumbers."

   "That you can do. And now listen and don't keep interrupting or you'll miss your connection-in which case you'll have to teleport to the Manila. You will fly to Mars to pick up the new devices, and then you'll make a stop at Terrania to pick up Putzi from the zoo. Is that clear?"

   Pucky's grin faded abruptly. He stared at Rhodan as if he'd been asked to raid the treasury vaults of "General Cosmic." "Putzi?" he chirped in bewilderment. "You mean Super Cat?"

   "Exactly, Pucky. We have urgent need for him on 'Mechanica' so that we can test the reactions of the robots, who in all probability will show up there. Surely you can realize that there's a specific difference between a man and a tiger..."

   "On the surface, yes," admitted Pucky candidly.

   "... between a man and a tiger from the mental aspect. Besides, Putzi will not be wearing a mental-absorber so that his brain impulses can be detected by the robots. We want to find out if they're only chasing humans and not tigers."

   "Putzi an experimental guinea pig!?"

   "No," grinned Bell. "More like an experimental tiger."

   Pucky was not very enthused about the idea. He had once brought back the semi-telepathic beast from a mission and had grown attached to him. Of course he had eventually been forced to consign Putzi to the zoo where other extra-terrestrial animals were also on exhibit. Putzi was well treated there and enjoyed his life in his extensive enclosure. At every opportunity Pucky had gone to visit him. The two even carried on a kind of telepathic communication between them.

   "Watch out, though, if anything happens to him!" Pucky threatened, and he balled his right paw into a fist. He was careful enough, however, to only shake it in Bell's direction. "But I'll only bring him if he comes of his own free will!"

   "Agreed," said Rhodan. "Now hurry it up. We want to take off at the latest within three days. Meanwhile we have enough to do here to get the Theodorich ready for the mission. The Manila is leaving right away. So you won't have any time to say goodbye to Iltu."

   Pucky made a wry face but did not contradict. Without any overtures he dematerialized. No one could have said whether or not he returned to the 3rd dimension first in the Manila or in the cabin of his girl friend, little Iltu.

   The Manila took off 5 minutes later with Pucky on board...

   The Theodorich was spherical in shape, measuring 1½ km in diameter, and was equipped with linear propulsion. In addition, the only existing fictive material transmitter had been installed on board, as it was to play the most important part in the forthcoming operation. Besides this, in addition to the FMT there was a regular big transmitter, but this of course could only transmit objects-including men-to an established receiver station.

   What Salzburger had brought from Mars were the new mental-absorbers. These tiny devices were capable of absorbing human cell and brain radiations so that a telepath could not detect the presence of organic beings. The mental-absorbers were combined with micro-transceivers which were precisely tuned to the frequency band that was broadcast from the unknown robot ships. This time the constant challenge of the robots, "Are you a true form of life?", would be answered. Further: it was planned that this question would be asked of the aliens themselves, in order to receive a corresponding answer and thus to avoid any suspicion from the start.

   The mental-absorbers with their built-in transceivers were distributed among the crew members and in a 1-hour briefing session their use was explained. Meanwhile, Rhodan conferred with Atlan concerning the final details of their intended cosmic defense ring.

   "There are enough space stations on the rim of the Milky Way to detect any signs of attack in time," said Atlan. "In addition I'm willing to order a few thousand ships onto patrol duty but I can't spare any more. There's enough for them to do in the Imperium. Each ship deployed out there means a further weakening of my position."

   "I can understand that," Rhodan conceded with a smile, "but you're too worried about the Springers and Aras and all the rest, whoever they might be. Granted, they're inclined to be revolutionists but they have no stomach for facing the final consequences. They'd hardly dare to stage an open revolt. And one day they'll all realize how lost they'd be without the Imperium-especially when the danger from the cosmos becomes acute." Suddenly he spoke in earnest. "The cosmic menace-that's the proper name for it. The invisibles and the robots imperil the whole galaxy. Are they really from intergalactic space? Where is their origin? Are they actually at war with one another, or is that a smokescreen to catch us unaware? These are the questions we have to find answers for if we want to continue our existence for long. That's why I'm flying to 'Mechanica.' Because I'm still convinced the robots come from there and not from the abyss. As for the invisibles-undoubtedly they're from another island universe."

   Rhodan still did not know how mistaken he was in one of these two conjectures. It was an error that might almost have been fatal.

   Atlan agreed with him. "You may be right, and I'll do everything I can to back you up. My robot factories are building more and more space stations which we can assign to the edge of the galaxy. They are the units that can alert us to the approach of an enemy. Is there anything more we can do?"

   "Much more, Atlan," Rhodan replied. "We have to determine who our enemy is. The invisibles-why are they just that? Do they exist in another dimension and are they naturally what they are, or do they need equipment to make them invisible? As for the robots-you heard the debate of the scientific staff. They have divided opinions. Which theory is the right one? I'm going to 'Mechanica' to find that out."

   "And if you're wrong? If they are not from 'Mechanica?"

   Rhodan hesitated before answering. "Wrong or not, we've got to be sure," he said, dismissing the subject. He returned to his original concern. "So you're building more space stations, Atlan? We're also building them on Earth's moon. Our shipyards are working at full capacity. The defense system must not have any holes in it."

   Suddenly Atlan smiled with some restraint. "It's still remarkable how times change. Formerly we were intent on screening off our Imperium from the outside-but what was outside then? Star systems within the galaxy which for the most part we haven't even explored today. Even your Earth was a part of that 'outside.' And today? Today the entire Milky Way known or unknown-is being shielded from the 'outside.' Only this time the 'outside' means the awesome emptiness between the galaxies, the great starless abyss, all territory between us and Eternity. We, the inhabitants of the Milky Way, are suddenly together whether we want to be or not, because an enemy has emerged that we don't even know. I keep asking myself if that's a step backwards or forwards."

   Rhodan looked at Atlan gravely. "That will be clarified some day, my friend. We'll probably live long enough to see the proof. Aren't we immortal?"    "Yes, if no one kills us." Almost involuntarily, Atlan reached for his egg-sized cell activator which, like Rhodan, he always wore against his chest. "we can no longer be taken by a natural death." He suddenly leaned forward in his chair. "What exactly is going on with our friend on the planet Wanderer?"

   "It's been long since I've seen him," Rhodan confessed. "My mutants and key people have been getting their biological cell showers there regularly so that they can extend their lives another 60 years-but he, the great immortal, has not allowed himself to be seen. So I presume he's alright and doesn't need our help. Perhaps only when the planet of the Barkonides reaches our galaxy."

   They conversed for another half hour until Rhodan received word from Commodore Jefe Claudrin that the Theodorich was ready to leave.

   He stood up and shook hands with. Atlan. "Goodbye, old friend. If you find the time, cross your fingers for me."

   "Good luck, Perry." Atlan made the wish fervently because he knew his friend would need all the luck he could get.

   This time there were no "military rituals" when Rhodan returned to his flagship. The fact of the matter was that no one outside of a few of the specially informed knew that Rhodan was even leaving the Arkon System.

   As Rhodan entered the Control Central, Jefe Claudrin was impatiently pacing the deck. When he saw him he heaved a sigh of relief. "At last!" he scolded thunderously. "For me, waiting is like sitting on nails."

   "That goes for me, too," said Bell from the vicinity of the navigation desk. He had been chatting with Red Thomas, the blond-headed First Officer.

   Rhodan gave him a searching glance. "Perhaps you would have preferred waiting here instead of taking off with us. All clear on board, Claudrin?"

   "All set, sir!" answered Claudrin briskly, but then he grinned and leaned nearer to Rhodan. "What did you mean by that, sir?"

   "I don't quite know, myself," he replied evasively. "Alright, let's take off. The coordinates are known-target star is 'Outside.' This flight will be at top velocity. I can be reached in my cabin."

   He left the Control Central, traversed the outer corridor for a short distance and entered a lift just as the Theodorich took off. The thunder of the peripheral engines could not be heard inside the ship, and thanks to the gravity fields the inertial thrust was not noticeable. By the time Rhodan opened his cabin door and entered his quarters, Arkon 3 had already become a mere bright star which grew visibly smaller and finally disappeared.

   A part of the famous Mutant Corps was also on board along with a specialized commando force. Not far from Rhodan's cabin, three other rooms were occupied by Pucky and Iltu and Putzi.

   Iltu has insisted on taking part in the operation. She had justified her claim by pointing out that, after all, she and Pucky had discovered the invisibles together. Inasmuch as her skill as a teleporter had been perfected in the meantime and she was practically equal to Pucky in telekinesis and telepathy, Rhodan had had no qualms about including her on the mission.

   While the Arkon System fell away into vast distances and the Theodorich far surpassed the speed of light at an incredible velocity, Iltu and Pucky paid the tiger cat Putzi a visit. The mighty beast lay curled up on top of the bed-covers. When the two mousebeavers entered, It stretched itself and slowly blinked its eyes. Its tail whipped several times against the cabin bulkhead. This was the first time Iltu had seen Putzi, so she held on fearfully to Pucky's uniform.

   "Heavens-what a big kitty! I'm afraid...!"

   "Don't be frightened, little one. When I saw Putzi for the first time, I was also afraid. Don't forget he's a cat and I'm a mousebeaver! But later we became good friends." He nodded toward the beast. "Isn't that right, Putzi, that we're good friends?"

   The cat, or tiger, yawned and began to purr in proportion to its size, the purring was a bit more reminiscent of rumblings from an elephant's stomach.

   "Watch, Iltu, how well we under stand each other." With a single jump, Pucky landed on the bed. He leaned against Putzi and supported his right elbow on the great body as if to pose for an artistic group picture. The big cat started to lick him. Pucky giggled foolishly and flailed about with his arms and legs but Putzi gently pressed him back on the bed and forced his caresses upon him.

   Iltu stood there flabbergasted while her friend disappeared underneath the tiger, all the while helplessly wiggling his arms and legs.

   "Is he doing something to you?" she chirped uncertainly. "I could use my telekinesis..."

   "Hey listen!" came Pucky's muffled voice from the confused tangle on the bed. "We're only playing!"

   The mousebeaver maiden, a bit smaller and daintier than Pucky, could only calm herself and watch. It was a sight to see, actually. As big and frightening as Putzi was in appearance, even for a man, he had also become equally harmless during captivity.

   When Pucky finally worked himself free after 10 minutes of struggling he gave the cat a slap on the back by way of saying goodbye.

   "You know you could also play with me once in a while," commented Iltu somewhat plaintively.

   Whereupon Pucky spat out a few tiger hairs and chirped at her: "But I'm not a child anymore." Iltu sighed and followed him after taking a last look at Putzi. "Neither am I," she said and then went into her cabin.

   For an hour or so, Pucky sat on his bed lost in muddled thought. He was considering Iltu's remark. Then, after sufficient meditation the realization finally came to him. It surfaced in just four words which he voiced with philosophic composure while imagining himself to be a sage.

   "That's just the point!"

   Then he curled up and went to sleep.

   In the immeasurable distances of the galaxy's peripheral zone, the Theodorich was not alone. At a slight distance it was followed by the 32nd Flotilla of the Terran Spacefleet. It consisted of 100 regular and super-line battleships with their accompanying cruisers and scout ships. The commander of the flotilla formation was Spaceadmiral Serge Vassilov who had distinguished himself on many an undertaking.

   Vassilov had received orders to maintain constant radio contact with the Theodorich and only to attack when he received a specific command to do so. Rhodan had taken this precaution to keep his back covered and yet be able to operate undisturbed. The unknown enemy couldn't be fooled with. Having a large force behind them meant more security for the Terrans and gave them a feeling of confidence.

   The last of the star systems, mostly with uninhabited planets, slipped past them on either side and melted back into the Milky Way, whose bright white glow filled the entire width of the stern viewscreen. Ahead was darkness. Only a few remaining peripheral suns hung there as lonely beacons. The distant island universes were diffused nebulous flecks in emptiness. In between was a red-glowing sun like a warning light: "Outside!"

   The Theodorich slowed its hurtling flight and without any special precautionary manoeuvres it approached the dying sun and its three planets. The first of them was a molten sphere and the outermost was a gas giant. The second world was "Mechanica."

   Rhodan was in the Control Central along with Bell, Jefe Claudrin and Red Thomas.

   "There's a mountain close to the site of the control center we blew up," said Rhodan. He was watching the screen in which the surface details of the mysterious planet were becoming more discernible. "At the edge of it were the automatic defense positions we were able to destroy last time. The top of the mountain is flat like a plateau. That's where we'll set up our stronghold. But we won't be landing."

   Jefe Claudrin looked at him in astonishment. "Not landing, sir? Why not?"

   "Because just now the robots don't need to know they have company. I merely wanted to see how that mountain looks. It will suit our purpose." He took a last look at the giant crater where the former control center of "Mechanica" had stood. "Turn around, Claudrin. Make a course back toward the galaxy."

   Claudrin hesitated, perplexed but finally made the necessary control adjustments. The Theodorich described a wide arc and picked up speed. "Mechanica" and the sun, "Outside," dwindled into the depths of the void. The Theodorich raced. swiftly toward the white band of the Milky Way. Simultaneously Admiral Vassilov was issued orders to take up a holding position at coordinates GH-17-HI at a distance of about 1000 light years from "Outside."

   Claudrin couldn't restrain his curiosity any longer. "Sir, are you going to risk a jump with the fictive transmitter over such a large distance?"

   Rhodan nodded. "If the target coordinates are accurate, its range is practically unlimited. The positronic tracking computers have taken an exact fix on the landing spot and have now registered the course. There is absolutely no risk." He pointed to several instruments on the flight panel in front of Claudrin. "Bring the Theodorich to a halt in two hours, Claudrin. At a distance from 'Mechanica' of... 1000 light years." He slapped him on the shoulder and turned away. "Bell, you come with me. We still have a few preparations to make."

   When Claudrin heard the hatch door close, he sighed and looked questioningly at his First Officer. "Did you make anything out of that, Thomas?"

   "Frankly no, sir."

   Claudrin grinned. "Great!" I thought I was the only dumbbell on this ship. Sometimes the Chief can be pretty mysterious but ordinarily that isn't like him. Well, maybe he'll give us a surprise."

   Although it was a surprise it was less of one for Claudrin than it was for Pucky, Iltu and some of the mutants. And especially for five tech officers of the commando group. While the Theodorich was still racing toward its assigned position, Rhodan called the mutants and technicians into the room where the fictive transmitter was installed.

   It would never have been possible for the Terrans to duplicate this apparatus which the great unknown and immortal being on "Wanderer" had one time presented to them. Its operating principle was a mystery. The only thing obvious and understandable was its performance. The transmitter was capable of transferring any object, organic or inorganic, to any desired location where it was rematerialized in its original form. Its tremendous advantage over ordinary transmitters was that it did not require a receiving station at the target end of the transmission. Of course Rhodan had used it rarely and only in emergencies in order to preserve the valuable device as much as possible. It was irreplaceable, and its actual value could not be estimated. This was also one of the reasons why he intended to build a normal receiving station on 'Mechanica' for the use of regulation transmitters.

   A half hour before reaching their prescribed holding position, the mutants and the technicians gathered together in the transmitter room. Pucky was holding on tightly to the tiger cat's collar-a remarkable sight because Putzi was as high at the shoulder as the mousebeaver. Next to them stood Iltu with the African teleporter Ras Tschubai, an equally dissimilar pair. The negro was twice as tall as the mousebeaver girl, who held on to his black fist with her paw a bit timidly as if she needed Tschubai's protection. The five technicians stood there somewhat uncertainly and observed the many crates and boxes that lay about the deck by the transmitter.

   Bell had left the room to return to the Control Central where he relieved Claudrin of suspense by telling him what was going on.

   Rhodan pointed to the fictive transmitter. "You'll be wondering why I'm asking you to dare to make such a long jump-exactly 1000 light years. I'll explain it to you so that you will be convinced of the importance of this precaution. The robots, if they came from 'Mechanica,' have never returned to their home planet. Instead they wander around in space and attack anything that's organic. They operate apparently in response to an ancient program which has long since lost its meaning or purpose. I wish to build a base on 'Mechanica' which in no way will be connected with the Theodorich. The activities there cannot be related to the flagship if she's 1000 light years away during the time of construction. We don't know what means of observations the robots have. All of you will wear the new special absorbers and thus you won't be detectable as organic life-except for Putzi. But there's also a special reason for that. We have to find out if the robots are also concerned about semi-intelligent creatures or if they only recognize mechanical entities as the 'true life form.'"

   "And what do we do," asked Pucky sceptically, "if the robots actually come and attack us? We sure won't be able to fight them off."

   "The crates and boxes you see here contain the kit materials for setting up a transmitter-receiver station. Once you have that you can make contact with the Theodorich at any time. With a transmitter channel I can always send you reinforcements, weapons and all the supplies you need, without having to go through the usual time-consuming logistics gyrations. As soon as the station's in operation I'll join you with 100 commandos. That mountain on 'Mechanica' is going to be turned into a regular fortress, provided that the robots give us enough time."

   "They haven't been around there for six years-why should they show up now?"

   Rhodan smiled briefly. "Because for the first time there will be new movement on 'Mechanica' by something that will not be broadcasting organic brainwaves, and to the robots that will mean representatives of the 'true life form' are there, according to their evaluation. They will take interest in that. Any other questions?" He had turned specifically to the technicians.

   One of these spoke up. "Sir, about these boxes-are they the full kit for a receiver station? I'm only asking because they don't seem enough."

   "You have just the framework there, Mr. Randet. The other assemblies will follow as soon as you've set that up." He looked questioningly at a second man. "Yes, Mr. Polski?"

   "Until that station gets built are we going to be able to contact you in case we're attacked?"

   "That goes without saying," Rhodan told him. "You'll be furnished with a portable hypercom. We'll be able to recognize its coded signal. Unfortunately there can't be any voice traffic but don't hesitate to signal in an emergency. Any more questions?" He looked at his watch. "Your jump will be in 5 minutes."    While they discussed the last details the Theodorich slowed down and finally became stationary in space.

   Rhodan placed a hand on Pucky's shoulder. "Keep a close eye on Putzi now, do you hear? He's the only one who's detectable as organic life." Pucky revealed his incisor and beckoned to Rhodan who leaned down closer to him.

   "Yes, what is it?"

   "You're pretty foxy," the mousebeaver told him. "Why did you keep back the real reason why we need a transmitter station on 'Mechanica'?"

   Rhodan was obviously puzzled. "What do you mean? What have I held back? What 'real' reason are you talking about?"

   Pucky kept on grinning while Ras Tschubai, Iltu and the technicians entered the transmitter cage. "It's plain as my nose, Perry. Without that station we won't be able to get back to the Theodorich if things get hot at the base. In a sense the fictive transmitter is a one-way street. But don't worry, I won't say anything to the others," he said reassuringly while be gave Putzi a tug. "It might give them cold feet and they could back out on the whole deal."

   Rhodan watched him go with a smile. He knew the little fellow had really held back this enlightening bit of information so as not to create anxiety in the others. They probably all were aware of it-but why emphasize the fact they had no way back in case things went wrong?

   He signalled to Chief Engineer Slide Nacro. Nacro had been born on Mars and was another one who had been "environmentally adapted." This could be seen in the abnormal size of his great chest. He acknowledged the signal and stepped to the control panel. He took hold of a lever and yanked it back.

   Rhodan watched the cage. Pucky, Iltu, Putzi and the 5 technicians disappeared from view.

   The air was cold and thin.

   Although the giant red sun was high in the sky, it no longer had strength enough to give out any noticeable warmth to speak of. It still gave light and it prevented the atmosphere from freezing but that was all.

   By the great crater near the horizon were the melted and gutted remains of the former control central. Ever since its destruction the automatic defense batteries of the mechanized planet had been silenced. The original inhabitants had long since vanished into the currents of time. No one could accurately say who they had been or what they had looked like.

   Not very large or lofty, the mountain lay in the midst of endless desert wastes which must have been arable and fruit full and at one time. However, that was all long ago. The harvest ships of the former civilization continued to circle about incessantly over the sandy terrain, searching in vain for the vanished spores which had once been processed into a nutritive pulp mash as food for their creators.

   The six men materialized out of nothingness along with the two mousebeavers and Putzi. They found themselves standing on the plateau overlooking the dreary solitudes of the dead planet. Not a thing moved down there on the sandy plain. If Major Salzburger had not erred, they were the only living creatures on this extinct world.

   "Clear the materialization area!" said Hal Randex. He was the leader of the commando techs who were to assemble the transmitter. "Otherwise those crates will be falling on our heads."

   They withdrew about 50 meters from the place where they had materialized and waited. The planned safety period dragged by slowly. Then something eerie occurred but which was not at all frightening because after all they were expecting it. The various parts of the transmitter appeared out of emptiness and began to make a considerable heap of boxes and packages. The range control provided that nothing materialized too soon or fell too far.

   Ignatz Polski sent out the prearranged code signal which confirmed that the assembly parts had been received in a proper manner. The signal also meant that they would begin with the construction.

   Pucky spoke to Ras. "We still have a few hours. Shouldn't we take the opportunity to have a look at the terrain?"

   "What terrain?" asked Ras Tschubai, looking all about him. "I don't see anything worth looking at."

   "Do you want to sit around here hugging your knees till you freeze? The assembly work will take at least 5 hours if I know these commando techs. OK I know," he added when the African made a significant movement with his hand, "we can turn on the heat. But that doesn't mean I won't die of boredom if I wait here doing nothing. Then I'll just go alone and I'll take Putzi with me. No, Iltu, you stay here with Ras!"

   "I can't keep you from it," said Ras without much enthusiasm. "But I don't recall that the Chief ordered any excursions."

   "Maybe you heard him say we couldn't?" retorted Pucky spitefully. In one jump he was on Putzi's back. The beast knew this kind of play from before and didn't move. "And that's the point he didn't! Don't worry, we'll be back soon. And Iltu... don't you try to jump after me!"

   Taking a good grip on Putzi's neck hair, he concentrated on the site of the destruction near the horizon and teleported. The mass of the tiger cat was not too great for a long-range jump. Through bodily contact, Putzi was transported through 5th-dimensional space like Pucky.

   They materialized on the edge of a large crater. The bottom of it was filled with a glasslike mass-the melted and hardened remains of the former control central. From here the defense weapons of the entire planet had been controlled. The battle stations were now deactivated and useless in their hidden bunkers, waiting for a new awakening. Without the control center, 'Mechanica' would be defenceless against any attack from space.

   "It's their own fault," thought Pucky, failing to consider that "they" no longer existed and that "they" had never been seen by anyone.

   Pucky didn't stay there very long. While remaining seated on Putzi's back he took a ride once around the crater and then teleported in an easterly direction. After three jumps they materialized on the outskirts of a city. The typical feature of these deserted cities of "Mechanica" were the round dome structures where the unknown inhabitants had taken their "feeding baths" at times when the harvest ships were away.

   The mousebeaver patted Putzi encouragingly and chirped, "Let's have us a look around the town. Maybe we'll find a clue. Perry would be happy if he was right about his theory." He giggled happily. "Frankly, though, I don't believe he is."

   Putzi gave a spitting growl as his answer and started into a trot. His giant paws moved with a velvety softness over the uncorroded pavement. To the right and left rose strange looking buildings which must have served as the dwellings of the unknown people. There were no abandoned vehicles to be seen, no articles of furniture-not the slightest hint concerning the builders of the city.

   Actually, Pucky hadn't expected anything else. He was not disappointed. He just hadn't been able to stand 5 hours of inactive waiting, so that was why the idea had come to him for this little outing. He was here with no particular goal or specific intention. He liked to ride on the big cat's back and to guide him as he pleased.

   Putzi accommodated him. He perceived the thoughts and wishes of his little friend much better than he could analyze or comprehend them. His intelligence and telepathic faculties were insufficient for that.

   They wandered through a number of the streets while the red sun continued to sink toward the horizon, causing the shadows to lengthen swiftly. An eerie twilight crept between the steep walls of the buildings, which caused objects to become indistinct. But in the wide square, somewhere near the center of the city, it became brighter. The last rays of the sun could still enter here unhindered.

   Putzi suddenly came to an abrupt stop.

   "So, what's with you, old friend?" asked Pucky, quite surprised. "you getting tired of this?"

   Naturally Putzi couldn't answer him but the cat's whole attitude was puzzling to the mousebeaver. The tiger cat stood there with his ears rigid and his hind legs crouched as if to spring. The hairs on his neck had stiffened. The tip of his tail twitched restlessly and he sniffed the air.

   Pucky couldn't see anything. It was all a little spooky for him but he told himself that in a few seconds he could disappear if any danger threatened. On the other hand that would be no solution. If there actually was any danger he had to stay and see what it was. The cat began to move again and with more confidence. Whatever had alerted it must have disappeared.

   Or had Putzi seen something?

   Only organic forms of life could be detected by the sense of smell but there wasn't any such life on "Mechanica"-at the most maybe robots. And robots didn't leave any scent that could be traced by an animal's nose. So Putzi must have seen something because there was no other explanation.

   Following this conclusion, Pucky concentrated his attention on the near surroundings of the plaza but in the deep shadows between the buildings there was nothing he could see. Certainly the big cat had better eyes than he did but nevertheless...

   Suddenly he saw the movement.

   Putzi had halted and was looking about on all sides. His hair was still bristled up and he emitted a low growl. Pucky saw that the movement was off to one angle in front of them. A figure slowly emerged from the darkness of a house wall and came walking toward them.

   It was a human figure!

   Pucky knew that there were no humans here. None had ever been here except Terrans.

   The mousebeaver was reluctant to simply take to flight. Of course he could bring himself to safety by means of teleporting but what sense would there be to that? Wouldn't he be a laughing stock later when reporting his experience? One thing for sure, he wouldn't be able to keep his mouth shut about such a mysterious encounter. Besides, he was far too curious.

   The figure slowly came nearer.

   Putzi snarled and growled louder, looking in another direction. When Pucky followed his gaze he noticed a second figure which looked exactly like the first one. This one also came slowly toward the center of the plaza. Then there were two more who were coming from other angles.

   Putzi and Pucky were surrounded.

   "We just have to assemble the antenna portion," answered Hal Randex.

   Ras Tschubai checked his watch uneasily. "How long will that take?"

   "No more than an hour at the longest. We're pushing it as fast as we can."

   But that wasn't what was disturbing Ras. Pucky and Putzi had been gone now for four hours. What would Rhodan say when he arrived with the commando troops and didn't find the mousebeaver here?

   "It's OK, Randex. We have time. Don't strain yourself."

   The technician stared at the teleporter wonderingly. Then he signalled to his men and went back to work.

   Iltu pattered over to Ras excitedly. Standing idly around kept her on edge. "We ought to do something, Ras. Pucky's disappeared! If something hadn't happened to him he would have been back a long time ago. He's in danger-I can sense it!"

   "Nonsense, little one," said Ras, and he picked the mousebeaver girl up into his arms. "You don't have to worry about Pucky. He's a first-class rascal and you can bet he'll show up here in the last moment before Rhodan arrives. He'll claim that he was only trying to test our patience."

   But this failed to reassure Iltu. She didn't share his opinion of the situation. "We're both teleporters," she chirped as if on the verge of tears. "Wouldn't it be easy for us to find him? We could jump to all the main locations on the planet and..."

    "So?" said Ras. "What sense would there be to that when we haven't the slightest clue as to where Pucky and Putzi might be? Of course if there was telepathic contact with him it could be considered. But-are you in touch with him, Iltu?"

    She shook her head negatively. "I'm a very good telepath but I lost contact with him a long time ago. The last I knew, he was in one of the cities with Putzi. Then all of a sudden the impulses vanished."

    "He probably put up his screen, little one. He often does that, you know."

    "But never so suddenly."

    Ras also began to feel uneasy but he tried to hide it from Iltu. Not successfully, however, since she could read his thoughts and he was unable to screen them off.

   "So what will we do?" she persisted. "Make a search?"

   "I wouldn't know where to begin. We have to wait for Rhodan. Maybe he'll know what to do. On the other hand, Pucky may show up and that would save a lot of grief."

   They again turned their attention to the 5 technicians who were close to completing their task. It wasn't the first time they had assembled a transmitter. These smaller type receiver stations provided a two-way traffic whereby a return to the sending station was possible. Based on Akon designs, they had been prefabricated on Earth and could be set up anywhere.

   Ignatz Polski finally sent out a prearranged signal with the transmitter. Seconds later, Rhodan's confirmation was received. He soon materialized in the grid cage with 5 of his commando specialists and got out swiftly to make room for those who were to follow.

   While men and material were thus being transferred to "Mechanica" from the Theodorich over a distance of 1000 light years, Ras Tschubai told Rhodan about Pucky's disappearance. As he talked, the Administrator's expression showed increasing concern. Several times he glanced at Iltu who stood between them and nervously stood on one foot and then the other. Rhodan's swift mind at once perceived something in this which seemed to be of extreme importance.

   "So you say Iltu's contact with him was broken suddenly? That could only mean either that Pucky's brain stopped working abruptly or that his impulses were screened off. He wouldn't stay away this long of his own accord without reporting. That can only mean that he encountered somebody. It's also a possibility that he's dead-but I'll discount that for the present." He noted Iltu's consternation. "I'm much more inclined to assume that he ran into an electromagnetic screen of some kind without noticing it. But nevertheless he should have returned before now because he knows that the transmitter assembly doesn't take more than 5 hours." He looked at Iltu again. "During your final contact with him, what did you pick up? He must have given some clue to his location."

   The mousebeaver girl shook her head. "It was completely one-sided, Perry. Pucky thought to himself and that's what I got. He didn't answer me. He had entered a city with Putzi. There were domes, empty streets, and an open square. Oh yes, and then there was this figure that came toward him..."

   "A figure?" Rhodan tensed. "Try to remember, Iltu! It's very important. What did this figure look like?"

   "Pucky only thought about it for a moment-humanlike, I think."

   "But there is no such thing as a human being on 'Mechanica'-at least not alive!" Rhodan shook his head in amazement. "You sure you're not mistaken, Iltu?"

   "No, I don't think so. I could practically see through Pucky's eyes, which you know is possible in direct contact. It was a big square plaza. High walls were all around it. The middle of the plaza was empty and did not have any structures in it. Then Putzi noticed the figure as it slowly came nearer. Two seconds later, Pucky saw the second one, then the third and the fourth..."

   "Four of them...!?"

   "Yes. Pucky was wondering if he should teleport but he decided to wait. He was saying to himself that he absolutely had to find out what this was that was still alive on 'Mechanica'-if anything still lived here at all. Seconds later, all his impulses were cut off. Since then I've not been able to make any contact.

   Rhodan pondered. "There are more than a dozen cities like that on this planet. We'd have our hands full trying to search them all for Pucky and Putzi. But I'm afraid there's no other choice. Don't do anything just now. I'll return to the Theodorich and get reinforcements. We need more weapons and a few gliders. Wait here in the immediate area." Rhodan stepped into the grid cage and disappeared a few seconds later. When he returned three minutes later he brought with him a so-called minicom, which was a micro-hypercom transceiver.

   "Polski, you take this over and keep in constant contact with Commodore Claudrin and Admiral Vassilov of the task fleet. They'll be able to tell you immediately if any spaceship approaches 'Mechanica.'" He indicated the transmitter. "Several gliders are coming through. Ras and I and Iltu will go in one of them to make a search. We have to find Pucky."

   The gliders arrived in kit form but they were quickly assembled by the technicians and made ready for operation. Then Rhodan got into one of them with the African and Iltu, and immediately it lifted off soundlessly and flew away at a low altitude.

   Within half an hour they reached the first city. It lay there still and lifeless in the glow of the setting sun. In contrast to Pucky, Rhodan had gone in a westerly direction and had thus delayed the sunset in relation to himself. The glider landed in the open central square which every city appeared to have.

   "About here it was that Pucky must have been standing," said Iltu uncertainly, and she pointed to the center of the plaza. "From that position he could have picked up the view that his brain transmitted to me. Then the figures must have appeared there on the edge of the square and come out here."

   Rhodan checked his portable beamer and shoved it back into his holster.

"Ras, stay here at the controls. Iltu, you stay here, too. In case of danger I'll call you. If we lose telepathic contact I can signal you with my hand. You will pick me up then at once-is that clear?"

   "You're going alone, sir?" asked Ras, somewhat disgruntled.

   "That's what I'll have to do if I want to secure my retreat." He opened the cabin and jumped down onto the smooth, concrete surface of the plaza. "I'll be careful."

   Although Rhodan had visited many worlds it was a strange experience to walk on a planet that eons before had supported a highly developed civilization but which now seemed suddenly to be devoid of any sign of life. And if there were anything still animate here it could only be mechanical or positronic "life." Such as the futile harvest ships up there in the upper atmosphere.

   Rhodan took a few steps while looking about alertly in all directions. The setting sun developed deepening shadows along the building fonts where everything was swallowed up in a dim twilight. Windows and doors became shapeless blotches of darkness. The dying sun's departure was heralded royally by a blood red sky.

   "Iltu, come over here," said Rhodan aloud in order to keep his thoughts concentrated. He was only a weak telepath but he caught her answer. And then the mousebeaver maiden materialized beside him. She had jumped the short distance to save time.

   "Could this have been the place?"

   Iltu looked at the sky. "I don't know, Perry. Pucky's view of the sun was the same as the way we see it now but-I can't figure it out. These city plazas are all so similar..."

   Rhodan suddenly perceived his error. "The sun! Are you sure it was just going down in the town where he was located?"

   "Yes, because the first figure was coloured red from its rays-I remember that now. At first it startled Pucky until he realized the reason for it."

   "Then we're searching in the wrong place," Rhodan decided. "Pucky's encounter happened almost 5 hours ago, so in his location the sun must have set long ago. I estimate we're at least 8000 km from the town he's in. We have to go east. Come on. Iltu-back to the glider! We can't lose any time!"

   The air vehicle flew eastward at a greater altitude into the night and finally, after a number of hours, it emerged again from the dark side. Day was already dawning when they landed in the 4th city. Once more, Rhodan left the glider and walked toward the center of the plaza. There he stopped and carefully observed the smooth, seamless pavement. Then he inspected the front areas of the buildings where their unknown creators had once lived. Now their fully automated heirs, the robots, were still threatening the universe.

   Rhodan looked all about him calmly. He could not see a thing that was suspicious-neither an alien figure nor even a hint of movement. The plaza lay deserted in the pale light of the morning sun.

   As he took a few more steps straight across the plaza he wondered if the unknown material of the pavement was actually as seamless as it appeared to be. Why was the plaza here at all? It lay here serving no apparent purpose in the center of the city-and in every city it was the same. Obviously all these towns had been laid out in accordance with a uniform plan.

   He bent down as he saw something that didn't belong in this place. When he picked it up he knew instantly what it was.

   "Iltu!" he called.

   She immediately materialized beside him.

   "Take a look at this. What would you say it is?"

   Iltu took the small bunch of tough, stringy hair in her paw and emitted a frightened exclamation. "Putzi!"

   Rhodan nodded. "That's right-Putzi's hair. The colour is unmistakable. So he was here! We've found the place. Let's hope it gets us somewhere."

   Iltu looked all about her as if she expected at any moment to see one of the mysterious figures appear, which Pucky had unknowingly described to her. But everything remained still and unmoving. "Putzi wouldn't allow anyone to touch him," she chirped, worriedly.

   "Yes, I was thinking about that my self. How could the tiger have lost that hair? The only explanation I can see is that he was killed or rendered unconscious and was dragged away. It must have happened so quickly that Pucky didn't have time to telepath." Rhodan pointed at the ground. "Let's look farther. We may find another clue."

   He shoved the tuft of hair into his pocket, straightened his weapon in its holster, and slowly walked onward. They didn't find any more hair at first but they discovered something else that was equally revealing.

   Iltu stopped suddenly. "Perry-I see a crack here! It's as fine as a hair."

   Rhodan came over to her and bent down. She was right! It had escaped his searching gaze although he had passed the spot several times. So Iltu's eyes must be still better than his. The crack was so fine that a particle of dust could hardly have penetrated it. It could only be seen with the naked eye when one bent down closer to it. Three or four hairs were stuck in it which could only belong to Putzi.

   Within the crack!

   This could only mean that the fissure would have had to open to receive Putzi-and probably Pucky as well. If that was true, then the two of them must now be somewhere under the plaza.

   "From here on, let's cut any telepathic contact," he said while he turned on his mental-absorber. "As of now, we are robots-at least to other robots."

   Iltu followed his example. "Do you think the ones who took Pucky were robots?"

   Rhodan nodded while he examined the narrow crevice. "We'll have to teleport, or do you think you can move the mechanism with telekinesis? That would of course be less dangerous, and we could follow them more accurately that way."

   "I'll try," said Iltu. There was a note of pride in her voice because finally she had a chance to play a decisive role and maybe rescue Pucky in case he was being held captive.

   She concentrated on what lay concealed beneath the surface of the plaza, probing every obstacle with her mental tendrils and seeking to analyze their shape. Then she would grip something here or there with her psychokinetic forces. When nothing moved, she searched farther.

   Meanwhile, Rhodan went back to the glider and told Ras what was happening. The latter had been watching them with increasing anxiety without being able to make any rhyme or reason out of their movements.

   "You wait here, Ras, in case we succeed in getting into the underground part of the city. If we're not back in two hours, go back at once to the base and get reinforcements. Burn through the covering here and pull us out of the underworld. Don't have any compunctions about it-just wade in! But first wait out the two hours. If we're alive by then we'll be alive in another 10 hours. If we are dead, it would have happened in the first minute."

   Ras was perplexed. "Wouldn't it be better to bring some of the special commandos now, sir? That would be safer."

   "I don't think we have that much time, Ras. Pucky and Putzi have been gone now for 8 hours already. If Iltu can really find an entrance we're not going to wait..."

   Ras interrupted him. "Iltu's waving at you, sir." He looked at his watch. "The two hours are starting now."

   Rhodan also checked his watch. "Agreed." Without another word, he strode away.

   Iltu pointed triumphantly at the crevice that was slowly opening. "It was easy as pie."

   Rhodan saw the stairs that led down into the depths. On the second step from the top was a pastel green shred of material. It was doubtlessly from Pucky's uniform. They must have been fairly rough with their captive because otherwise the uniform wouldn't have been torn like that.

   He stooped down and picked up the tattered scrap and placed it in his pocket. He knew now with absolute certainty that he was on the right trail and that he would soon find the two.

   What he didn't know was what was waiting for him at the end of that trail...

   With the click of a button, Pucky turned on his mental-absorber so that all his brain impulses and cell emanations would be screened off. Now even a telepath would not be able to sense the presence of a thinking entity. So it was no wonder that Iltu suddenly lost contact with him.

   On the other hand, Putzi continued to "think." In fact his brain impulses became stronger and advertised the tiger as being an organic form of life. As for Pucky, he might as well have been a robot.

   The mousebeaver had made this decision when he was definitely certain that the four encircling figures were robots. Now it was just a question of whether or not they would attack Putzi. If that happened it would be proof of Rhodan's theory.

   At first, nothing happened at all.

   The four figures slowly approached them but with apparent coordination. Probably they had radio contact between themselves. Precisely equidistant from one another, they held to a course that would terminate exactly at the spot where Pucky and Putzi were located.

   The tiger cat growled menacingly as Pucky cautiously slid from his back and stood next to him. He left his beamer in its holster since he did not expect an attack. When he had slid off Putzi's back was when the tiger had lost the tuft of hair that Rhodan picked up later.

   The four robots came to a stop at a distance of precisely 10 meters. Even that manoeuvre was performed simultaneously as if on a single command. They stood there and observed Pucky with their glittering multi-faceted eyes. As still nothing happened, Pucky got the idea of making contact with the robots. So far, all indications from past experience showed that they were in search of "the true life form."

   Cautiously, Pucky activated his micro-transmitter which started at once to send out its message on the robots' waveband: "We are the true life form." At the same time it challenged the recipients to confirm the same. The result of this action was so surprising that Pucky didn't have a chance to defend himself.

   A field of greenish light shot toward Pucky and Putzi from four directions all at once. When it reached them it immediately paralysed their brains and nerve centers. The tiger dropped as it struck by a lightning bolt. It took a half second longer with Pucky but he was also unable to fight it. Although he fell heavily to the ground he did not feel the pain of the impact. However, not all of his nerves were benumbed because his eyes continued to bring impressions to his consciousness.

   Now the four figures came closer. The field of green light remained but it was not blinding. Pucky was able to get a good look at his opponents. They were definitely robots. However, their entire comportment did not seem to indicate that they were of the same breed of machines that mercilessly attacked all organic life.

   Seconds later when they bent down to pick up their captives, Pucky noted another difference. They did it with a certain measure of care and consideration which was not at all like the brutal destructiveness of the robots from the fragment ships. Of course this didn't change the fact that the paralysis continued even after the green light suddenly vanished.

   The robots remained motionless while holding Pucky and Putzi in their steel arms. The pavement on which they were standing began to sink downward. Pucky saw the adjacent staircase which they were not using. The platform swayed slightly and he would have slipped from the robot's arms except for a quick movement that caught him again and held him tightly. That was when a fragment of his uniform was torn loose.

   The platform stopped at a depth of about 10 meters. The four robots marched into a wide and well-lighted corridor while the pavement slab slowly rose again and closed the opening above.

   A door slid to one side before them and the robots carried their burdens into a large chamber where white walls strongly reflected the light. Everything here was white-even the machinery and the generators which stood in a long line against the wall. In front of these Pucky noticed at least a dozen tables, each of which was located under a complex-looking apparatus. A few chairs and control consoles completed the furnishings.

   Pucky and Putzi were placed on two of the tables which were about 5 meters apart from each other. Instantly a white light glared into their faces, causing them to close their eyes for a moment. The mousebeaver could just barely move his head again but not nearly far enough to be able to see everything. The ceiling, the opposite wall, Putzi's table and two of the robots-that was all that lay in the field of his vision.

   Plus the other table next to him.

   He was startled when he saw the bleached skeleton there, which was unquestionably humanoid, perhaps even that of a Terran. It lay there stretched out on the table. The man, if such it had been, must have died in this place.

   Were he and Putzi facing a similar fate? And if so, why did the robots bother to bring them here first? They could just as well have killed him and Putzi above in the plaza. But the robots suddenly turned and walked out into the corridor through which they had come. Behind them the door closed once more. The ceiling lights went out but the brilliant light from the apparatus above the tables remained. Pucky finally noticed that there was a greenish tinge to the floodlight over him. Apparently its purpose was to maintain the state of paralysis. And as long as he was incapacitated he was helpless.

   Putzi hardly moved at all. One might have considered him to be dead if it were not for his faint breathing. The paralysis only affected the less critical nerve centers but permitted the automatic functions to continue. The blood circulation was uninterrupted as well as breathing and the digestion.

   Pucky suddenly felt hunger and was horrified to realize how that skeleton had come to be on the other table. Because he just now noticed that the greenish white light was still shining over the skeleton. So it had been probably for 6, 50 or 1000 years!

   Pucky carefully concentrated on the lamp above him and sought to move it by means of telekinesis. He soon had to desist, however, because he saw that his efforts were fruitless. He knew that he could not free himself. If no one helped him he and Putzi would die of hunger in this subterranean operation room. Even his attempt to kill time with his thoughts were doomed to failure. Time seemed to strike back at him and drag on all the more.

   "Mechanica" was a world of the damned. The "progeny" of its vanished inhabitants had already caused plenty of trouble for the Terrans. In addition to the harvest ships, now here were also robot sentinels who took every space traveller captive, paralysed him and brought him to this long-abandoned laboratory, where he was apparently to have been examined by the scientists who were now extinct. The robots were still following their assignment today, the same as the harvest ships which were circling uselessly over the now barren surface world.

   Pucky tried telepathy. Rhodan must have arrived on "Mechanica" some time ago and he would have begun a search. Iltu would not have failed to tell him how abruptly her contact had been cut off. It was certain that Perry would have begun to worry.

   But what if Rhodan should fall into the same treacherous trap and end up on one of these tables?

   Pucky had arrived at this process of reasoning when he became aware of movement. The entrance door began to move sidewards into the wall.

   Rhodan had taken no more than a few steps downward when Iltu cried out sharply behind him.

   "Perry! Over there by the buildings-a figure!"

   Rhodan came back up a step so that he could see better out of the stairwell. A robot was slowly approaching the center of the plaza, nor was he alone. One was emerging from each corner.

   Iltu whispered fearfully. "This is the way it was while I was still in contact with Pucky. And then..."

   "Don't lose time," Rhodan interrupted swiftly. "Jump to Ras and tell him to take off! He's to hold an altitude of 10 km and wait!"

   Almost in a matter of seconds, Iltu was back. The glider took off and disappeared into the sky.

   "Come on," said Rhodan, "let's duck out of sight before those robots get here! Can you close the entrance?"

   Iltu tried but she was too much distracted by the advent of the robots. The hole remained open.

   Rhodan noted her desperation and spoke to her gently. "It's alright, Iltu. It's not that important. The robots can no doubt follow us whether the entrance is closed or not."

   After 30 or 40 steps they reached the lower level. A considerable light emanated from the walls.

   "No trace of Pucky?" asked Rhodan. "I mean telepathically?"

   Iltu shook her head negatively. For a short time she had shut off her mental-absorber and then had turned it on again. Rhodan looked at her perplexedly for a moment.

   "Wait here, Iltu. We still haven't tried everything. I'll go back up again and make contact with the robots. I must know if they act differently then. If I don't have any luck I'll be back in time."

   He went up the staircase several steps at a time and then peered out cautiously from the opening. The robots were still 50 meters away. They were coming slowly from four directions toward the center of the plaza. Rhodan activated his automatic transmitter which sent out the question concerning the "true life form." Then he switched to reception.

   There was no answer. With quick decision, Rhodan cut off his mental-absorber. Still no reaction. He knew from bitter experience that if these robots were from a fragment ship they would have come storming at him by now. It would have been easy for them to identify him as organic life. But nothing happened. They only continued their advance with uncanny precision and without any undue haste.

   Greatly disappointed, Rhodan hurried back down the stairs. His theory hadn't worked here. At least not so far. The enemy robot civilization did not have its origin on "Mechanica." But his disappointment was counteracted by a sudden sense of relief. If Pucky had fallen into the hands of the actual enemy he would be beyond saving by now. So there was still hope if he could just be located in time.

   If he had been brought down here he couldn't be too far away because there was only one wide passage leading away. Iltu was standing with her back to the wall.

   There was a faint tremor in her voice when she spoke. "What now, Perry? I can't trace Pucky."

   "Let's go along here," he said, and he took the mousebeaver girl by the hand. "We're going to find him. But the robots are behind us. Later we'll have to take care of them to get back out of here."

   They soon reached the end of the corridor. Here a blank metal wall seemed to present an insurmountable obstacle. While Iltu started to probe any possible mechanism there with her telekinesis, Rhodan listened for signs of pursuit. He thought he could hear a distant sound of heavy footsteps but he wasn't sure. By his calculations the robots could have reached the center of the plaza by now.

   "Rollers!" exclaimed Iltu, pointing at the partition. "It's a door that moves sideways on rollers. I think I can do it!"

   Rhodan held back in order not to disturb her. And then the wall began to move. Brilliant light shafted through at them from a white chamber.

   When Pucky saw Perry Rhodan he wanted to let out a shrill, loud whistle of joy but unfortunately that wasn't possible. The paralysis continued undiminished. He could only lie there and watch to see what his liberators were going to do.

   Rhodan and Iltu discovered the two captives immediately. They approached swiftly but stopped at a safe distance from the tables. Rhodan had a vague presentiment of danger when he saw Pucky lying there motionlessly. The mousebeaver could roll his eyes but revealed no movement otherwise. Moreover, he was not tied down. Near him lay Putzi in the same situation.

   Rhodan made a sign to Iltu and took a step closer. He was disturbed by the brilliant light that came from the apparatus over Pucky's table. At the same time he sensed an unexplainable dull weariness that began to paralyse his nerves. His legs could no longer support the weight of his body and he almost hit the corner of the table as he fell.

   But he saw Pucky rolling his eyes again and looking directly up at the painfully bright light. He immediately understood. "Iltu!" he groaned and tried to crawl back a few feet. "The lamp! Knock it out-paralysis rays!"

   Iltu responded at once. While taking care to stay out of range of the light, she applied her telekinetic faculty. The lamp's metallic arm bent slowly and finally the brilliant shaft was turned in another direction.

   Immediately Pucky began to move. He slid off the table and landed directly in front of Rhodan who was just getting up. Without hesitation he drew out his beamer and shot the lamp over Pucky's table. The light went out. A second shot freed Putzi. The tiger let out a terrible growl and sprang to the floor. He ran to the wide doorway, beyond which loud footsteps could be heard.

   "The robots!" chirped Iltu in alarm, and she felt Pucky all over as if to make sure he was not damaged. "If they come in, we're lost!"

   "That's right, they've got paralysis beamers!" Pucky confirmed. "And Putzi's run to meet them!" When he saw Rhodan glance at the skeleton on the table he explained. "The robots must be programmed to bring all their captives here. That one was left and forgotten."

   "The same could have happened to you." Rhodan shook a warning finger at him. "I have a strong feeling that you have some other explaining to do, Pucky, but you'd better have a good story. You still have time. Were you taken prisoner by those robots?"

   "Yes, with their paralysis beams."

   "Alright, then we'll have to take care of them before they can do any more harm. Iltu, come here! Pucky, when they appear, use your telekinesis-or do you think there's another exit upstairs to the street so that we can elude them?"

   With loud snarls and growls, Putzi put in an appearance again. The tiger had gone a way into the passage but having seen the robots and recalled his experience he had come back.

   "Over there is a door," said Iltu, pointing to the wall directly opposite the corridor entrance. "But of course I don't know what it leads to."

   "Turn off your mental-absorbers," ordered Rhodan. "We don't need them anymore. We were on the wrong track. The robots on 'Mechanica' don't seem to have anything in common with our weird opponents on the edge of the galaxy. So let's get out of here. I have no desire to lie here on a table and be forgotten."   Just as Iltu and Pucky finally succeeded in opening the door, the robots appeared at the opposite entrance. They hesitated to orient themselves. Then, having espied the enemy they moved forward to render them harmless as the Masters had ordered them to do.

   "Wouldn't it be better if I rammed them against the wall?" asked Pucky. "Then we'll be rid of them-and besides, we don't know where this second passage goes."

   Rhodan didn't answer immediately. He knew that Pucky didn't have a bad idea but he was reluctant to destroy the robots. On the other hand, they represented a constant danger as long as humans were on "Mechanica."

   "Also, Iltu could also show what she's learned!" persisted Pucky. The mechanical figures were still 30 meters away but it would be only a matter of seconds before they attacked.

   "Alright," Rhodan finally decided. We don't want to lose time getting lost in strange corridors. Get rid of them."

   Apparently, Putzi was afraid. He growled and walked a short way into the new passage and sat down.

   Rhodan remained a few meters behind the two mousebeavers as they concentrated on their task. Just in case he held the energy gun in his hand.

   The robots had come to within 15 meters of them and had halted. Suddenly something uncanny happened. Two of the robots appeared to become weightless. It was a scene Rhodan had witnessed often enough, however. The mental forces of the two mutants had gripped the robots and lifted them up. It was not absolutely necessary to slam them against the wall, as Pucky was fond of saying. If they were dropped from a sufficient height the fall would destroy their positronic brains.

   And that was exactly what happened.

   The metallic bodies of the two robots touched the ceiling. They remained there a moment and then they started to fall. They dropped about 5 meters and crashed with a thundering clatter and broke apart. Something crackled and splintered inside of them-then there was silence. The two victims made no further movement.

   The other two didn't fare much better although they managed to activate their paralysis beams before they fell. However, they failed to do any damage. The greenish light had hardly appeared before it was extinguished by their destructive crash to the floor.

   Pucky nodded to Iltu with approbation. "Excellent, little one! You've learned a lot from me."

   Iltu retorted impertinently, "I've been doing telekinesis since I was a baby, Grandpa. Maybe better than you."

   Pucky jumped as if he'd been slapped. He couldn't stand to have her call him "Grandpa" whenever he referred to her as "too young" or the "little one." Rhodan replaced his weapon in its holster. "You can talk later about your prowess and your ages," he told them. "Let's teleport to the surface."

   Iltu made her jump alone. Pucky first took Rhodan up to the plaza and then went back after Putzi. Meanwhile, the crevice in the pavement had closed again and sealed the entrance.

   Ras Tschubai landed and opened the door. He checked his watch. "The two hours were almost up. It was high time."

   Rhodan was the last to get in. The four of them with Putzi were crowded in the small cabin. The hatch closed. The glider rose slowly into the clear morning sky and swung off to the West.

   "Were you in touch with the base, Ras?"

   "Yes, sir. Polski says everything's in order. It's still night where they are."

   There was nothing more to say. although Ras didn't ask, Rhodan gave him a short account of what had happened. He only made brief mention of the fact that his theory hadn't worked out and that the killer robots couldn't be from "Mechanica." But he didn't sound very convinced when he said it. He was still plagued by secret doubts.

   Three hours later they landed on the plateau. Dawn was on the horizon and it would soon be light. The transmitter station stood ready for operation in the protection of a cliff wall. Jefe Claudrin reported that his fast scoutships had not detected any alien vessels within an area of 5000 light years. The "Outside" System was alone and deserted in the vast gulf between the galaxies.

   Rhodan slept several hours and then he and Ras Tschubai took the glider on a reconnaissance flight. Landing in each city, he searched for any indications of the unknown robot civilization which had menaced the borders of the Milky Way. Everywhere he encountered still functioning but mostly harmless machinery but nowhere was there a clue to that which he sought.

   Finally after 12 long hours, Rhodan was convinced that he was on the wrong track. Nevertheless he was sure that the hostile robots came from the unknown depths of deep space. The puzzle still remained as to why they waged such an embittered battle against all organic life while protecting or sparing other robots.

   By the time Rhodan and Ras Tschubai returned to the base, the sun was already sinking below the horizon. As quickly as the day had brightened at dawn, night rushed upon them. In order to obtain direct status reports, Rhodan went through the transmitter back to the Theodorich and made sure that the fleet under Admiral Vassilov was in standby readiness for any action. Jefe Claudrin showed him films taken by the scout ships.

   After giving a few more instructions, Rhodan then returned to 'Mechanica.' Sentinels had been posted for the night watch. However, nothing disturbed the well-earned rest of the commando group.

   At noon of the following day, Ignatz Polski burst out of his improvised communications hut. "Sir! Commodore Claudrin!"

   Rhodan had been conversing with Ras Tschubai and several of the technicians but he responded immediately and ran to the video hypercom inside the shelter. Claudrin's broad face looked down at him from the screen. Behind him a part of the Theodorich's Control Central could be seen.

   "Sir... five unidentified vessels are approaching 'Mechanica.' They can only be picked up on the special scanners. You know what that means, sir!"

   Rhodan nodded calmly. "I've been expecting this, Claudrin. They are invisible?"

   "Absolutely."

   "So here we go again with the phantoms from the abyss. They are probably coming here because they've followed the same chain of logic as I have. They also think 'Mechanica' must be the original home of the robots. I wouldn't be surprised if they opened an attack on the planet."

   "Of course you're returning, sir? What are your orders?"

   Rhodan thought for a moment. "Return, Claudrin? Where? You mean to the Theodorich? No, we're staying here. Just make sure Vassilov doesn't do anything rash. He's to stay in his assigned position. Do not attack! The invisibles must not know that our ships are stationed near the system. They are invisible but we can be seen-that advantage they have over us. They are equally as dangerous as the robots. It's fortunate for us that they're at each other's throats-but that doesn't keep them from attacking us."

   "But you're completely defenceless, sir!" retorted Claudrin worriedly. "How will you defend yourself against these Agents?"

   "Agents...?" Rhodan chuckled. "You mean the invisibles? Let's just call them the Laurins. Do you remember the legendary king of the dwarfs who could make himself invisible? So-they're Laurins. If they attack 'Mechanica', for the most part they'll hit the cities and the control stations but not an uninhabited mountain. We'll lie low and won't attract their attention. It's part of my plan not to have them suspect our presence-so that I can observe them undisturbed."

   "And if their attacks happen to destroy the transmitter?"

   Rhodan sighed. "Of course it's also possible, Claudrin, that someday I might die of pneumonia in spite of my cell activator. Come on, my friend if I had included every 'if' or 'but' in my calculations in the past, by today we wouldn't have gotten to Mars yet."

   Claudrin gave up. He became a bit stiff in his manner. "I'll keep in radio contact with you, sir."

   "No, that you will not!" returned Rhodan sternly. "you will only keep your receivers open. If we need help we'll get in touch with you. Is that clear?"

   Jefe Claudrin met his gaze head on. "Yes sir."

   The viewscreen darkened.

   Pucky had come in unobtrusively. He observed soberly. "He didn't like that, Perry."

   "He means well, Pucky. He's worried about us-and I'm afraid he has every reason to be. The invisible Laurins are moving in for an attack. Their ships must be fairly close by now. They could show up at any moment. We'd better head for cover. If they discover our transmitter station we're done for."

   "You've dubbed them the Laurins? Laurin-that's the king of the dwarfs who could make himself invisible. I think we're still headed for a lot of trouble with them."

   Rhodan gave Polski a few last instructions and left the hut with Pucky. "This time they're going to serve us as decoys," he answered. "I'm positive that they're coming here because they suspect this is a base for the robots or even their home planet. But whether they come from here or not it's possible the robots may show their hand if the Laurins are more conspicuous than we have been. That way we kill two birds with one stone. We can watch them both and maybe learn something."

   "You're not so dumb," said Pucky as if this were a generous compliment, and he waddled toward the dugout that the commandos had melted out of the cliff wall. "But I'm not either. If your Laurins come I'm going to make myself scarce."

   Rhodan smiled after him before he turned to several officers. He gave them precise instructions as to what to do in case of a direct attack. In such an eventuality they would retreat in groups back to the Theodorich.

   Ten minutes later the plateau appeared to be deserted. There were no signs that the Terrans had erected a base here. The transmitter and the communications hut had been so well camouflaged that they could not be detected from the air. The underground bunker was deep inside the cliff and afforded ample protection from normal fire from energy guns. If the Laurins didn't attack with atom bombs, nothing much could happen to Rhodan and his men.

   But here was an "if" again, thought Rhodan as he joined Polski and decided to get a status report from Claudrin.

   No one knew why the Laurins were invisible. There were various theories, of which the other dimension idea seemed to be the most probable. Under a concentrated crossfire the Laurins could be made visible temporarily. While dying they revealed a humanoid outline for a few seconds but then vanished abruptly at the moment of death. If one sought to grasp them there was nothing but air where they had been seen. No one knew where they came from.

   The five ships approached the "Out side" System at high velocity and began to circle it. Then they came closer to the 2nd planet and finally had it hemmed in entirely.

   "The attack can start any minute now," said Claudrin.

   Rhodan looked tensely at the view screen which clearly revealed the present action. With its special scanning equipment the Theodorich served the function of a relay station. The five ships could be seen in shadowy silhouettes that were cylindrical in outline. Rhodan thought fleetingly that this was their exact appearance that time on Barkon.

   Now the ships were gliding down ward out of their orbits.

   Claudrin commented: "That's a sure sign they're either going to land or make a concentrated attack. Wouldn't you be better off if you came back, sir?"

   Rhodan shook his head while keeping his eye on the screen. He could clearly see the plateau where he was located. Nothing could be seen of the transmitter. The camouflage was really complete.

   One of the ships was now stationed over a city. A small, glistening object separated from it and fell like a slow, silvery droplet. It picked up speed and suddenly transformed itself into a brilliant sun. The bursting inferno spread out swiftly but did not rise. Instead it continued to descend upon the city. A gray cloud grew swiftly above it and soon assumed the typical mushroom shape.

   Rhodan turned pale. "That's an Arkon bomb-or something very much like it!" he called out in alarm. "That I didn't expect."

   "What?" asked Claudrin, horrified. "Sir, you don't, mean it!"

   "But I do, Claudrin. They're out to destroy the entire planet. That bomb will set off a continuous chain reaction. In a few days the planet will be nothing but a flaming atomic torch circling its sun. That way they think they can be sure, once and for all, that the home of the robots has been destroyed."

   "You must get into the transmitter at once, sir!"

   Rhodan shook his head. "Why, Claudrin? It'll be days before the fire spreads this far. Even if they bomb each city like that we'll still be out of danger for at least 24 hours. We're staying."

   "The second ship has also dropped a bomb-at most 100 km from your position. How fast does the chain reaction spread?"

   "About 5 km per hour," Rhodan assured him. "As long as they don't attack us directly we can stay here-at least until morning. Then we'll see." He paused for a moment. "Tell your scanners to keep their eyes open. If I'm not mistaken, the avengers may soon be showing up."

   "You still believe...?"

   "That they're here? No-but given time the Laurins may see something yet..."

   In the course of the next hour, 20 more of the Arkon bombs were dropped-or what Rhodan had designated as such. The atom fire had started and would destroy "Mechanica." It would mean the final death of a once great civilization that had already ceased to function. The harvest ship that had been captured and taken over by Rhodan would be the only thing left of all this. It would bear witness to the transitory nature of all organic life. On the other hand it would prove how nearly imperishable the races were whose hearts were of metal and whose thinking apparatus were positronic circuits.

   Rhodan shuddered at the thought. Outside the noonday sun was still dark red and seemed to be slightly veiled, but today this was no illusion. Actually the sky was lightly overcast with a hazy scrim. The atmosphere of "Mechanica" was full of dust-radiating, deadly dust.

   Pucky materialized in the communications hut. "Perry-you know I don't ordinarily eavesdrop on your thoughts, but it seems to me it's time we were getting out of here."

   Rhodan turned around to him. " And why do you think we came here? No, my friend, we're still holding out a while. I'm waiting for the inevitable. It simply has to happen."

   "The robots?"

   Rhodan nodded without a word and turned back to the screen. Already there were many glowing spots on the surface of "Mechanica" which slowly but simultaneously increased in size. The blasted cities looked like seas of fire. They were seas that overflowed and were expanding beyond their shores. They would gradually flood the planet and work their way into the depths to its core.

   Claudrin called in again, "Admiral Vassilov is waiting for your orders, sir, so that he may attack the Laurins. He believes he could take care of the situation in just a few minutes."

   "He should stay with the orders I gave him!" retorted Rhodan severely, although he could understand the officer's impatience. "Vassilov has to wait his turn, and just now is not the time."

   "That's rough on the nerves," said Claudrin. "Five ships are out there destroying an entire planet-and we sit by doing nothing."

   "We have to break off our contact, Claudrin. The Laurins must not detect a single signal. Just now they're too busy but I don't want to take any more chances."

   He nodded to Claudrin and Polski, then turned around and went out with Pucky. Outside he paused on the plateau to look up at the sky. Definitely, the sun was not as clear and visible as before. The intervening haze was certainly no more than 10 km above the entire surface of the planet. If it should rain, no organic life would survive here more than a day or two.

   "Sir!" exclaimed Polski breathlessly behind him. " A call from Claudrin!"

   "Again?" said Rhodan, surprised. "It seems the Commodore is more worried about us than we are, ourselves. When he came into the com shed he saw on the screen that Claudrin's face was tense with new excitement. "What's going on, Claudrin?"

   "The robots-they're coming!"

   Rhodan tensed. "Already? How many?"

   "Three fragment ships, sir. They are approaching the 'Outside' System at high speed. They'll be there in two hours." He looked hopefully at Rhodan. "Will you come back now? Can I at last give Vassilov his order to attack? We'll hardly have another opportunity like this-to bag 5 Laurin and 3 robot ships all at once."

   Rhodan sighed. "Nothing will happen, Claudrin. We are staying here and Vassilov will wait. Do you think I'd lose the opportunity to observe a battle between the Laurins and the robots at this close range? Try to imagine how much may be learned from that."

   "So you're staying?"

   "That's right, Claudrin. We're staying until the last minute."

   "Standing by for your orders, sir," concluded Claudrin, and the screen snapped off.

   Rhodan turned to Polski who had turned slightly pale. "Stay close to the console and call me if Vassilov or Claudrin with to speak with me. I'm afraid that things are going to get rough now."

   He went outside to give instructions to his men.

   The three fragment ships looked like psychopathic nightmares. At first glance they gave the impression of being flying cubes but this was deceiving. Upon closer inspection one discovered bizarre protuberances and projections and bulges which all represented some unknown function. The fragment ships measured at least 2000 meters on a side, which made them larger than the super battleships of the Terran and Arkonide fleets.

   From previous experience it was known that the commander of such cube ships was a robot who was over at least 1000 other robot creations. Each of these variegated robots fulfilled a particular function but all were apparently subordinate to the one chief robot.

   The fragment ships were invincible-or had been thus far. Under the fire of the unknown ships the most powerful defense screens crumbled. But in his coming encounter with the robots Rhodan planned to use his ultimate weapon-the gravitation bomb. The detonation of a gravitation bomb would cause an enemy vessel and its defense screen to be torn from the energy structure of 4-dimensional space and thus destroyed. This 5th-dimension weapon was carried to its target by means of light-velocity spiral fields.

   At least Rhodan hoped that the operation would work that way.

   The nightmare ships had come into view and swept toward the 5 Laurin ships without the slightest warning. Rhodan could follow the event on the viewscreen as the scene was transmitted to him by the Theodorich. From that point of view, "Mechanica" looked like a great ball that was aglow in many places. although very small, the 5 circling Laurin ships could be seen distinctly due to the special scanning equipment. The 3 fragment ships appeared as small square plates.

   It was all over within 10 seconds.

   Before the Laurin commanders could think of activating their defense screens their ships-although invisible to human eyes-dissolved in the atomic infernos unleashed by nuclear torpedoes. Nevertheless somebody had been quick enough to open with counterfire. One of the fragment ships received a direct atomic hit which broke through its screen. While the Laurin ships melted to ashes and disappeared, the robot ship began to fall.

   Rhodan watched the viewscreen in fascination. Still 1000 light years away, Jefe Claudrin turned on the magnification. The tiny sounding rocket with its hypercom video transmitter was circling "Mechanica" unnoticed at less than a light second of distance. It sent the pictures to the Theodorich for evaluation and in the process they were relayed back to Rhodan.

   There was nothing much more to see.

   As the damaged fragment ship neared the upper layers of the planet's atmosphere, Rhodan finally called out decisively. "Claudrin! Move the Theodorich to within two light minutes of 'Mechanica.' Do not attack! Determine the exact location where the robot ship crashes. Pass this order on to Vassilov: the remaining two fragment ships are to be attacked and destroyed with gravitation bombs."

   Claudrin's face had appeared on the screen, suddenly wearing a brighter expression. "At last!" he said in obvious relief. Then he was gone and the screen again showed a view of the falling derelict. It was finally seen to crash between three fiery seas of molten ground where cities had recently been located. It would be a good two days yet before the raging atom fires reached the wreck. Rhodan noted this lucky break with relief, and also the fact that the ship had not exploded upon impact. Just toward the end of the downward plunge its hurtling pace had slowed as if a portion of the retro-engines had started to work again. So the robot commander must have been functional enough to break his fall at the last moment. Complete destruction had been avoided.

   Which fit Rhodan's plans exactly.

   Admiral Vassilov received Claudrin's relayed command without change of expression. Only a few minutes were required to transmit the precise flight coordinates to the 100 units of his fleet, and then the formation was on its way. It raced at top speed toward the "Outside" System.

   Meanwhile the two robot ships had made no move to help their fallen companion. Obviously the robots must have seen that "Mechanica" was doomed and that there wasn't any time to repair the other ship in time-if it could be repaired at all. And since robots were devoid of feelings the fact that their companions were left in a death trap was a matter of indifference.

   Or were they really devoid of feelings...?

   Rhodan recalled the scientist whose theory was opposed to that idea. Experience now seemed to refute him. Here were robots deserting their own kind. So they could not possess any feelings or emotions-or could they?

   The Theodorich had started out at top speed immediately after receiving Rhodan's command, and thus it reached "Mechanica" in advance of the fleet. It began to orbit the system at a distance of two light minutes. At first the fragment ships took no notice of the super battleship and turned to a search of the planet's surface. What they were looking for was not clear to Rhodan. He could only hope they would not discover him in the process.

   Suddenly, however, they turned away and began to accelerate in the direction of the Theodorich.

   "Sir, I believe they intend to attack us. Your orders?"

   Rhodan checked his watch. "When does Vassilov get here?"

   "Not for another half hour, sir."

   "Alright, Claudrin. Pull out of here and come back in 40 minutes. Under no circumstances can we expose the flagship to the risk of destruction. Only superior numbers can overcome the robots-and that means the fleet. So disappear for now-but then come back."

   "Shouldn't I at least...?"

   "No, you shouldn't!" Rhodan retorted sharply. "Now please snap into it-get going!"

   Claudrin obeyed but gritted his teeth angrily in the process. This operation was not at all to his liking. He always had to stay in the background and remain out of the action. Of all people why was he held back with his reputation for being a front-line fireball? Rhodan really knew how to make life difficult.

   Seconds later the Theodorich vanished into the depths of space and left two uncertain fragment ships behind. Rhodan breathed a sigh of relief. Of course this lost him his video tie-in to the local scene by way of the Theodorich but it was unlikely that the fragment ships would return to "Mechanica." What could be there to interest them now?

   Rhodan left the com booth and gave orders to prepare the gliders. The transmitter had to be left behind because there wasn't time now to disassemble it. There were more important things to do. Much more important!

   Only the hypercom equipment was loaded on board. In fact it was kept in operating condition so that at any moment Rhodan could get in touch with the Theodorich or the fleet. Then the 10 gliders rose up and flew at low altitude eastward toward the other side of the planet.

   It required some difficult manoeuvring to avoid the heat from the incandescent seas which in the past few hours had spread out swiftly. Half the surface of "Mechanica" had already fallen prey to the atom fire. It was progressing faster than Rhodan had originally estimated.

   Meanwhile, Claudrin informed Rhodan that the two fragment ships had pushed on farther into space. It was well that they were moving in a normal mode of travel because once they entered hyperspace they could never be found. In contrast to known methods of hyper-transition, the robot ships left no traces of a warp shock. Without any disturbance of the space-time structure they could disappear into the 5th dimension and emerge from it at will. It was a new principle with which the Terrans were unfamiliar.

   The robots were unfortunate enough to fly directly toward Vassilov's formation. When they noticed the enemy it was too late. The Admiral acted swiftly. The gravitation bombs were all ready for launching. They were launched in a concentrated salvo so that each of the fragment ships would be hit by at least 10 bombs.

   What happened then was quite amazing.

   Normally any material object disappeared when hit by a 5th-dimensional bomb. It was hurled into hyperspace where it remained forever. But it was otherwise with the fragment ships. They detonated and transformed themselves into normal energy.

   Vassilov noted the unexpected phenomenon in astonishment and immediately relayed his observations to Rhodan. "There's no doubt that the bombs broke through an energy screen," he concluded. "But how is it that the matter of the fragment ships remained in our own continuum? That has never happened before."

   Rhodan thought a few moments before answering. "There might be an explanation for it, Admiral, but it seems pretty fantastic. You know that the fragment ships have defense screens based on energy of a type we can't normally get through. However, the gravity bombs could do it. Why? Because the enemy screens also work on a 5th-dimensional principle. When the bombs detonated they had a neutralizing effect. Of course the ships were destroyed but because of the neutralization they weren't thrown into hyperspace. They remained in our own dimension."

   Vassilov nodded. "You could be right, sir. At any rate, I feel better now. What are your orders, sir?"

   "You will remain in the vicinity. Put your fleet in an orbit around the planet and wait for further instructions. Keep a close eye on space outside the system. Send out scout ships so that we won't be disturbed in our operations down here. I'll be relying on you."

   "Very good, sir."

   Rhodan looked down at the surface of the doomed planet. "Mechanica" would only last another two or three days. Nevertheless, if they hurried there would be enough time. The gliders were not very fast. It took almost 6 hours for them to get around the planet to the site where the fragment ship had crashed.

   The derelict had cooled and was not radiating heat. There was only one explanation for it: the robots had succeeded in operating their extinguisher equipment and had thus prevented complete destruction. However gratifying this was in one sense it also presented a problem: now they had to consider the possibility of being attacked by the robots.

   "Everybody turn on your mental-absorbers!" ordered Rhodan as the small flotilla landed within less than 200 meters of the wreck. Pilots remain in your gliders so that we can make a fast retreat. All others-disembark. Technicians report to me. Commandos, keep your weapons ready!"

   Pucky and Iltu were with Rhodan. Putzi had remained behind in the glider. Ras Tschubai joined them as they looked up at the tremendous mass that towered before them like a great mountain. The artificial escarpment towered almost 2000 meters into the reddish sky. although the sun had sunk behind the horizon some time ago it was still bright in the area. Soon "Mechanica" itself would be a sun.

   "You stay here," said Rhodan. "I'm going to move in a little ways alone."

   "But..."

   "No back-talk, Pucky! The robots can't pick up any cell emanations or thoughts since they're screened off by the mental-absorber. They'll think I'm one of their own. But we have to consider all possibilities-even that the absorbers might not be 100% effective. So keep your eyes on me. Only move in when I give you a signal."

   Rhodan turned his back to his troops and walked slowly toward the wrecked ship. In spite of the calm and quiet sound of his voice it had only been with difficulty that he concealed his inner excitement and tension. He knew very well the risk he was taking. There inside the derelict a thousand different dangers could be lying in wait for him.

   When he came to within 100 meters of the ship he stopped. The hole in the hull was not far off the ground. Here the weapon of the Laurins had penetrated the defense screen and the armour-plated sheathing. Probably, as with the gravity bombs, it had been a 5th-dimensional missile. The hole was jagged and burned. Its lower edge was no more than 5 meters, above the ploughed-up ground. A projecting antenna and a tower-like structure protruding from the surface of the cube would make it easier to climb inside.

   Rhodan walked farther toward it. Without hesitation he would have gone into the fragment ship alone but since Pucky's absorber was also activated he wouldn't be able to make a telepathic contact with him or call for help in case of an emergency.

   Should he chance it anyway?

   He stood before the hulk and deliberated. Then he waved reassuringly to his men and climbed up toward the violently created entrance hole, hand over hand. Inside the wreck he saw a room that had been completely destroyed. The purpose of its demolished equipment was beyond determining now. In the background was a door that had been torn off its hinges, revealing a corridor beyond.

   He turned on his micro-transmitter and broadcast the signal. At regular intervals the surviving robots must now be receiving its message: "Are you the true life form?"

   Rhodan entered the ship and went into the corridor. As he became aware of a vague, shadowy movement some distance away, he stopped as if he were rooted to the spot. He had been forced to consider the possibility that not all of the robots had been destroyed by the crash, yet the confirmation of his suspicions still came as a surprise.

   His transmitter was still putting out the repeated question: "Are you the true life form?" When he switched to reception he suddenly felt his pulse race.

   His micro-speaker said clearly. "Yes, we are the true life! Are you also the true life form?" "We are the true life," replied Rhodan.

   With that the robot's vocabulary seemed to be exhausted but it was doubtlessly enough for accepting a friend or knowing when to attack an enemy. To the robots all organic life was a deadly foe and every robot was automatically a friend.

   When Rhodan approached the shadowy figure he saw that it was a robot that must have suffered some kind of damage. It seemed to be moving sluggishly. Its form was not at all humanoid but rather resembled an old-fashioned icebox covered with a complex maze of fluid tubing. From first inspection it was not possible to guess what special function the robot had served on the ship.

   Rhodan confirmed once more that he was the true life form. Then he turned back and went to the rupture in the ship's hull. He signalled to his men and they immediately moved forward. Pucky only waddled a few meters of the distance before he teleported.

   "Well, how do they react?"

   "As we expected," he answered. He knew that the robots could not hear him because their hearing equipment didn't pick up ordinary, soundwaves. Or at least this was assumed. "They have recognized me as friend. Hal Randex, you can go to work now. Round up all undamaged robots and get them outside. Don't worry, they won't give you any resistance because they'll think we're their rescuers. Just act as if it's all a matter of course. That will bluff them."

   The men climbed into the derelict ship and set to work.

   The Theodorich landed close beside the wrecked ship while Vassilov's fleet continued to patrol outer space. Long-range scout ships made a deep thrust into the starless void and let their scanners sweep far and wide. They would only be able to detect ships which were not located in hyperspace but it was entirely possible that a few fragment ships would be attempting to approach the system in normal flight mode to see what had caused three of their units to vanish without a trace.

   Bell and some of the officers and men of the work detail had joined Rhodan and the technicians.

   "The view from the air isn't so rosy," he commented, while surveying the derelict critically. "Outside near the horizon, all hell has broken loose. The surface of the planet is being consumed by nuclear fusion. In two or three hours we won't be able to hold out here any longer."

   "Yes, it's developing swiftly," Rhodan admitted soberly. "We have to hurry if we want to salvage the important items in time. What's the status of our base on the plateau and the transmitter?"

   "That you can write off, Perry. The plateau has long since turned into a flaming morass of molten magma, and it's joining a whole ocean of the stuff. Storms are building up all over. I wonder why it's not so bad here."

   "Pure chance, Bell. Fewer bombs were dropped on this side of the planet. But it won't be long even here before we'll be noticing the general chaos." Rhodan's thoughts seemed to race. "Signal Vassilov and tell him to send down a couple of salvage vessels right away."

   Bell hurried away. On board the Theodorich he made contact with Vassilov and transmitted Rhodan's order. Ten minutes later the ungainly spacers landed near the wreck.

   The working details kept up an incessant flow of the smaller robots out into the open where they were set upright or simply stacked. Most of them hardly gave any sign of life but there were many who cautiously asked if their rescuers were the true life form. In every case this was expressly confirmed to them via the special transmitters, and that always brought an abrupt end to any further conversation.

   Bell had returned to Rhodan. "Can I take a look at the inside of this robot crate?" he asked while Rhodan was telling the men to hurry. "Why are you pushing it so hard, anyway? We still have enough time."

   "That's just what we don't have!" retorted Rhodan in some exasperation. "I'm not concerned about the smaller robots. I want to take as much of the whole ship as I can." He watched while the cranes picked up 10 of the small robots at a time and heaved them into the hold of the salvage ship. "The ship is still hiding the commander-he's the one I want!"

   "You mean he hasn't been found yet?"

   "No, unfortunately. I have to cut the ship apart and have it loaded on board the salvage vessels-all in an hour!"

   "You should have done that from the start."

   "Which would have destroyed all the small robots, right?" He sighed.

"Alright, go take a look for yourself but be careful. Be sure and give an answer if the robots ask you the password, so that they won't attack you. They're a strange bunch."

   "Why so strange?"

   "Because they could be taken in by our fake signals," said Rhodan with a grin.

   Bell passed several technicians and climbed into the half-ransacked ship. The antigrav lifts were still working and everywhere he encountered commando details who were searching for robots that hadn't been badly damaged. They were still removing them. He soon arrived in a section of the giant ship that had not been touched yet by the general mopping-up operation. The rooms were empty except for strange apparatus that looked as crazy and bewildering as the ship itself. They were such abstract shapes that it was hard to tell if they were ornamentation or served some technical function.

   Bell passed a corridor in which he saw a small robot creeping along laboriously. It consisted of a torso and ten short limbs.

   "Are you the true life form?" The challenge came weakly as if with its last dregs of energy.

   Bell sent out his answer. Satisfied, the robot kept on crawling and disappeared around a curve in the passage.

   A few decks down, Bell found an apparently undamaged combat robot. There was no doubt that its arms terminated in energy guns. Its outlines were humanlike. So far nobody had brought this kind of a robot out of the ship.

   Bell activated his wrist transceiver and called Rhodan. When he told him of his find, Rhodan promised to send up some technicians right away. At the same time he announced that all hands had to clear the wreck within 10 minutes.

   Bell waited until the men came and then headed for fresh air. He felt as if he had a case of angina. Once outside he joined Rhodan again.

   "How far has the atomic fire gotten?" he asked while bracing himself against the rising wind. "Where's the Theodorich?"

   "It's already taken off-waiting for the order to cut the derelict into pieces."

   The men were just bringing the combat robot out of the exit and placing it on the ground. A vehicle came by to pick it up.

   And then it happened.

   At some distance from the ship were the 10 gliders which had brought Rhodan and his group here from the base. Suddenly, Putzi was seen to spring from one of the passenger cabins. He landed on his feet and stretched himself as if preparing to be venturesome.

   Pucky saw him and became alarmed. He jumped to Rhodan's side. "Perry, Putzi's left the glider. Should I take him back?"

   "Wait a while," Rhodan answered. He watched as the tiger cautiously sniffed the air and then started slinking slowly toward the fragment ship. "Far and wide here, Putzi is the only creature not equipped with a mental-absorber. We should find out how the robots react to him."

   "Isn't that too dangerous?"

   "You stay close to him and bring him to safety in case he does anything foolish. Bell, keep your weapons ready."

   Rhodan rested a hand on the butt of his own beamer and watched tensely as the tiger cat moved forward with its big ears twitching nervously. Its tail whipped the dusty ground angrily.

   A small work robot with tools for hands began to stir. It got up laboriously and began to move unsteadily toward Putzi. Several others on top of a pile began to move but they couldn't get up because they were hemmed in on all sides. Putzi had come to a stop. With an ominous gleam in his eyes he watched the small robot which had raised its right arm threateningly. The arm ended in a 3-pronged fork. Fearlessly it advanced upon the carnivore. The speed of its movement had in creased. It was obvious that it had recognized Putzi as organic life and thus an enemy.

   Rhodan placed a hand on Pucky's shoulder. "Hold off, little one. We have to know for sure."

   Putzi suddenly made a mighty leap and gave the robot a sweeping blow with his paw. The metallic figure was hurled back into the dust, rolling over several times before it finally lay still. Putzi paid his antagonist no further heed since it had no promising odour and therefore was not legitimate prey. He made a loping series of jumps to ward the derelict and finally paused to make a leap into the yawning hole in the side of the fragment ship.

   No one had been paying attention to the combat robot which was already in the grip of the crane's grappling magnet and was being lifted upward. The metal monster suddenly began to move. Of course it could not break free of the powerful magnetic field but its positronic inner workings must have been shielded in some manner and were still able to operate freely. Putzi was only two meters from it as he sprang, and at the same moment two fingers of energy shot out towards the tiger. The beams caught Putzi in the middle of his jump.

   It all happened too quickly for Rhodan or Pucky to intervene. Even Bell stood there as if frozen. At the focal point of the deadly rays, Putzi was converted almost instantaneously into a gleaming puff of ashes. The animal could not have felt anything since it died before it could sense that it was threatened.

   Pucky emitted a shrill cry and charged toward the combat robot. It had just been released by the crane and had fallen onto the conveyor that would take it into the salvage ship.

   "Pucky!" shouted Rhodan. "Don't lose your head!"

   But Pucky was deaf to warnings.

   At least he suddenly came to an abrupt stop but it wasn't in response to Rhodan's advice. It was because he saw the foolishness of what he was doing. He knew he couldn't do anything against the steel monster with his bare fists. Meanwhile the robot had apparently switched off its hostility circuits. The only enemy on the planet had been destroyed. It waited on the moving belt to be loaded into the cargo hold.

   Suddenly, however, the heavy fighting machine became weightless. Pucky had gripped it with his telekinetic forces and lifted it up. He raised it to a height of 50 meters and then brought it down with a smashing impact against a large rock outcropping.

   The robot struck heavily and burst into a thousand pieces. It hadn't even sought to defend itself, having trusted the "true life form" too far.

   The clattering of the twisted metal parts to the ground was followed by an uncanny stillness. No one dared to move. The commando troops were watching Rhodan whose command had gone unheeded by Pucky. They knew the vital importance of examining this particular robot. And now it was no more.

   Rhodan also stood motionlessly in the same spot. His face seemed to be made of stone. Not a single muscle

   The stillness was broken by a sob: "putzi!"

   Pucky stood there forlornly. His arms hung limply at his sides and in this moment he looked more desolate and forsaken than ever before in his life.

   Rhodan still didn't move, and Bell looked as if he were rooted to the ground.

   Iltu stared at the two men and half whispered: "You could have prevented it-you are the ones to blame!"

   She received no answer and perhaps she hadn't expected any. She toddled over to Pucky and placed her arm around his shoulder. She had to reach up to him because she was smaller than he was. She used her free hand to grasp his hand.

   "He felt no pain from it, Pucky," she whispered. "And as for the robot you did the right thing. If you hadn't done it, I would have..."

   Pucky finally looked at her as if emerging from a dream. "Thanks, Iltu," he said, so softly that the others couldn't hear him. "Putzi was dearer to me than most humans. He was my friend and didn't deserve to die so uselessly. But what makes it worse he was deliberately sacrificed."

   Iltu shook her head. "You mustn't say that, Pucky. Nobody wanted to sacrifice Putzi, even if his death could have been prevented. If it's any consolation, at least you know that you avenged his death."

   "Yeah-on an old piece of metal!" said Pucky bitterly. He looked despondently toward Rhodan and Bell. "And they even wanted to stop me from doing that. I know they're mad at me for it. But I couldn't do anything else. I had to destroy that robot-otherwise I couldn't have taken it."

   The men continued their work because time was pressing. But they worked in silence almost as if they were ashamed of themselves. They operated their machines carefully and the cargo was placed silently on the conveyors.

   The mousebeavers were two small lost figures standing in the midst of the stacks of robots, the salvage ships and cranes and the busy workers. No one seemed to be directly concerned about them and yet each was considering them in his own way.

   "Let's go," said Iltu, and she pulled Pucky away.

   They avoided looking at Rhodan and Bell and wordlessly passed them by. Bell swallowed hard as though in embarrassment and his hands trembled almost imperceptibly. Only his head moved as his eyes followed the two mousebeavers.

   Rhodan snapped out of his frozen state and stepped in front of Pucky and Iltu. With an expressionless face he held out his hand.

   "I'm sorry, Pucky. If you can-forgive me, please."

   Pucky came to a stop. He looked up at Rhodan almost in amazement and then regarded his outstretched hand. He hesitated. Everyone was aware of his inner struggle.

   Then he spoke. "OK, Perry." He ignored the hand and went on, with Iltu following.

   Rhodan watched him go with an indefinable expression. His lips were tightly pressed together. His hand slowly lowered to his side. Almost wearily he turned, finally, and went over to Bell who avoided his gaze.

   Now suddenly it was these two mightiest men of the Solar Imperium who looked desolate and alone. They became the two lonely figures in the midst of the traffic around them. The last of the robots were loaded into the salvage ships as they watched in mutual silence.

   Hal Randex came up to them and announced in official tones: "Loading operation completed, sir."

   Rhodan seemed to come out of a trance. He spoke mechanically. "Board the gliders and pull back 5 kilometers. Have the salvage ships take off and return to the fleet." Without waiting for confirmation he turned and strode toward the waiting gliders.

   Bell followed him wordlessly, his face still pale. They squeezed in on board one of the small vehicles together. While the small flotilla gained altitude, Rhodan made contact with the Theodorich.

   "Claudrin? You know what you have to do. Keep your cutting fine-tuned so as to damage as little as possible. The sections have to be small enough so that they can be transported. See if you can finish it in half an hour-we don't have much more time."

   "Very well, sir. There was one small thing..."

   "Just get started!" Rhodan interrupted him gruffly.

   For a second, Claudrin was bewildered. Then his brows arched upward and the glider's viewscreen darkened.

   Rhodan looked out on the desolate landscape. Even at a distance of several km the wreck of the fragment ship gave an impression of imposing size. If only half of it could be salvaged, much would be gained.

   The gliders landed on a hill. The crews were given a half hour to stretch their legs. Meanwhile the Theodorich sank down out of the sky and its cutter beams reduced the derelict to stowable sections.

   Rhodan had also gotten out and he walked alone to a nearby rise on the hill. On the way he passed the glider where Pucky and Iltu were located. The mousebeavers had not emerged. Rhodan slowed his pace considerably at this point but what he had hoped for did not occur. Nobody came to shake his hand.

   On the hilltop Rhodan was a lonely figure silhouetted against the blood red horizon. No one again would stand on this elevation which would only exist as such a few more hours. Once more a world was dying-like Putzi-uselessly and to no purpose...

   Why did death have to strike again and again? Why did it have to destroy lives and entire worlds alike? Would there ever be an answer to these questions? Was death necessary so that there could be life? Rhodan was glad that his mental-absorber was shielding his thought impulses. No one could read his mind at present, not even Pucky.

   Pucky...?

   He really hadn't intended to let Putzi die. But now because of this death had he lost his little friend forever? Wasn't he actually blameless in the affair? True, he had taken Putzi along in order to observe the robots' reaction to him. And that reaction he had seen! The robots also attacked semi-intelligent life forms. It was important information to have although it had come at a sorry price.

   He looked at his watch. There were 15 minutes left.

   The Theodorich had finished its work earlier than expected. It rose up again and went into a waiting position. The remains of the wreck had cooled off. The enemy ship had been changed into ten separate sections...

   From his elevation he could look down at his men by the gliders. They stood about in small groups conversing while here and there the glow of a cigarette could be seen. Slightly removed from them, Bell stood by himself and looked at the sky.

   He was as alone as Rhodan.

   And all this because of an animal, he thought bitterly. Then he immediately regretted this thought. Wasn't Pucky also an animal, as seen from the human standpoint? And wasn't Pucky a better friend than many of his subordinates? He clamped his jaws together. At this moment he hated himself and had no greater desire than to feel the mousebeaver's handshake.

   He took a few steps toward the gliders and then stopped again, undecided. He returned to the peak of the hill. He felt a slight trembling under his feet. Surprised, he looked down at the ground which was strewn with rocks and dust. Was it some kind of earthquake? It was entirely possible because within the planet very critical tectonic changes were taking place.

   Then everything happened so suddenly that Rhodan didn't have time to save himself. In the rocky surface appeared a circular opening which was hardly 2 meters in diameter. It revealed a shaft that led into the depths.

   Rhodan began to fall immediately into the shaft, which seemed to be aimed straight at the core of "Mechanica." The center of a planet that was doomed.

   No one had seen Rhodan disappear.

   Bell turned his gaze from the sky to look at Rhodan but Rhodan wasn't there anymore. Had he gone down the other side of the hill? Perhaps he had taken a walk and was coming back to the landing place from the opposite side. He'd wait 5 minutes.

   But the 5 minutes went by and Rhodan failed to return.

   The men had climbed on board the gliders again and were waiting for their orders. Bell suddenly felt the burden of responsibility. If Rhodan did not come back in time he would have to take over and give the operations command himself.

   But where the devil was Rhodan?

   He signalled to the pilot to wait an other moment. As fast as he could he ran to the top of the hill and looked around. He could see the whole surrounding terrain very well but there was no trace of Rhodan.

   He stood there helplessly. The first tendrils of fear of the unknown crept over him. What had happened? Where had Rhodan gone? He couldn't have just dissolved into thin air or sunk into the ground.

   Into the ground...?

   Bell looked down but saw nothing but naked rock and wind-blown dust.

The storm had carried away the normal dust layer and left no tracks.

   Bell ran back to the gliders. "The nuclear fire is getting close," he shouted.

"We can't lose another minute. Rhodan will be back soon-maybe he's discovered something important. Start in with your work." He hesitated a moment and then added: "Tschubai, you stay here with your glider."

   It was the glider containing Pucky and Iltu.

   Rhodan continued to drop down the dark shaft. His elbows and feet often scraped and banged against the vertical walls but nowhere was there anything he could hold on to. Above on the hilltop he must have inadvertently activated a contact that had opened the cover of the pit. Could this be part of one of the numerous defense installations of the vanished race...?

   There was no way of knowing. He continued to fall helplessly. But suddenly he was in contact with the wall longer than before. It seemed that he was being pressed against it, lightly at first and then more heavily. He was falling more slowly.

   Then he understood.

   The shaft had been vertical above but was curving into a horizontal line-very gradually and over a large distance. His hurtling motion was gradually braked until all kinetic energy had expended itself. And finally all motion ceased.

   He couldn't even guess how deep into the crust of "Mechanica" he had penetrated but certainly it must be several kilometers. The temperature had risen so that the air was almost suffocatingly hot. The ventilation here left something to be desired.

   Gradually his eyes accustomed them selves to the pervading gloom. Otherwise it was not completely dark here as he had first believed it to be. He was still sitting on the floor of the horizontal tube but the ceiling was now much higher. In front of him, not 10 meters away, was a torpedo-shaped missile, the nose of which was pointed right at him.

   And suddenly Rhodan realized what he had fallen into.

   He was in the huge barrel of a cosmic cannon. The missile lay before him and he, Rhodan, was blocking its way.

   Instinctively he jumped over the edge of the flat channel that was meant to give direction and impetus to the weapon. His feet landed on a hard floor. The missile did not move. It was half inserted into a metal housing which undoubtedly concealed the firing mechanism.

   Nothing moved, and Rhodan began to comprehend that this defense position had long since been deserted. Or did it operate automatically? No, that couldn't be because in that case it would have reacted to the crashing fragment ship or to the landing of the Theodorich. An abandoned missile emplacement of unimaginable size. It couldn't be anything else.

   Rhodan knew now that only a stroke of luck could save him. No one had seen him disappear. They would think he was somewhere up on the surface and that's where they would look for him. His men didn't have much more time because the atom fire was creeping onward inexorably and soon it would reach the spot where the pieces of the fragment ship were lying.

   Before that, however-even an hour before that-this defense position here would be vaporized into a synthetic sun.

   He realized suddenly that in the past few minutes the heat had risen noticeably. From somewhere out of one of the passages a hot stream of air was reaching him. It brought with it the smell of burning earth.

   Abruptly he turned off his mental absorber. If Pucky had the same idea, then at least they'd know where he was. But if the mousebeaver followed his instructions then Rhodan's thought impulses would not be able to be picked up by anybody. In that case he would be lost.

   A broad passage led away from the subterranean launch ramp. It also led away from what Rhodan presumed to be the advancing front of the atomic fire. Without much deliberation he ran into this corridor and immediately thought he was beginning to breathe cooler air. But the respite was deceptive. The fire was now advancing faster than he could run, at least for any length of time. And if the passage should come to an end...

   His secret fear was to be realized sooner than expected.

   The passage widened into a room filled with machines and control panels but there was no apparent exit. When he reached the farthest wall and leaned against it, breathing heavily, he stared straight through the room at the corridor he had come thru. Death would be entering there-at first in the form of increasing heat to the point of suffocation, to be followed by molten lava.

   He was beyond all rescue now-if his telepaths, and above all Pucky, still held to their instructions and did not turn off their mental-absorbers...

   Down on the plain the salvageable pieces of the fragment ship were being loaded. Time was pressing. The entire horizon was a mass of fire and the stormwind was becoming almost unbearably hot. Bell had gotten into the glider behind Ras Tschubai. Pucky and Iltu sat indifferently in a corner and paid no attention to him. They were gazing outside at the dreary landscape with its barren, sandy hills-at the accursed planet where their friend had met his death.

   "Perry's disappeared!" announced Bell somewhat hoarsely.

   Pucky didn't even look at him. Iltu only regarded him vacantly.

   Ras Tschubai cleared his throat uneasily. "If we knew approximately what direction he took, I could teleport and get him back here. But unfortunately I'm not a telepath. I can't locate where he is."

   Now Pucky was listening but he avoided Bell's gaze. "telepathy? With active mental-absorbers?"

   "Then turn them off!" called the African while Bell remained silent.

   "Turn them off, you say?" retorted Pucky with ill-concealed anger. "Do you mean I should ignore a command of Rhodan's? Maybe I should have done that sooner when he ordered me to let Putzi become a guinea pig for his research. But I disobeyed his second command when I got even for Putzi and smashed that robot. So now I'm supposed to do it again, to save Rhodan?" He looked out the window again. "Who says I should do that?"

   Ras pleaded with him. "There's no danger for us now if we turn off the absorbers. You and Iltu are the only telepaths here. If you can trace him we can figure out the exact coordinates and go after him. He's in danger-I can feel it."

   Pucky gave Bell a hostile look. "Well, what have you to say? Weren't you the one who found the combat robot in the wreck and had it brought out? If you had stayed in the Theodorich, Putzi would still be alive."

   "It was an unfortunate chain of un related circumstances, an accident," said Bell almost meekly. "But it wasn't intended, Pucky. Man, be reasonable. You won't bring Putzi back to life by leaving Rhodan in the lurch!"

   "Don't call me man!" shrilled Pucky He looked out the window and saw the red wall of fire on the horizon. "Well alright, Iltu and I will turn off our absorbers-but that's all we're going to do." It was only a matter of seconds until such a change came over his face that it frightened Bell as much as it did Ras Tschubai.

   "What is it, Pucky?"

   "Rhodan! It's unbelievable but he's down below us-but far away! At least 5 kilometers-about there!" He pointed at Bell's feet. Calculating swiftly, he concluded that Rhodan was approximately 3 km beneath the surface and about 3 km in the direction of the wall of flames. "How could he have gotten there?"

   "Quickly!" the African urged him. "Give me the exact details so that I can make the jump!" Pucky looked at him and through him. Then he shook his head. "I'll go myself, Ras. Calculation would take too much time. I can track Rhodan while I'm making the jump. No, Iltu, you stay here! It's lucky he turned off his absorber. Wait here, I'll be back soon." He began to concentrate but did not jump immediately. "Bell, do you think I would have let him die on this Godforsaken world? You have a lousy imagination!" With that he was gone.

   Bell's expression was not overly intelligent as he stared at the empty spot where Pucky had been. He wondered how the mousebeaver could have guessed his thoughts in spite of the absorber.

   20 seconds later, Iltu said: "Pucky has found Rhodan. He's out of danger. We're supposed to fly on ahead and they'll join us."

   Rhodan tore off his uniform jacket when the heat became unbearable. Streams of sweat ran off his forehead into his eyes.

   When Pucky materialized in front of him he didn't see him immediately. It was several seconds before he became aware of the mousebeaver's small figure as if looking at him through a thin veil. At first he thought he had become the victim of an hallucination but then as he started to lose his balance and Pucky tried to give him support with his small hands, he felt his silky fur.

   "You... Pucky? You have come?"

   Everything that Pucky had been prepared to say remained unspoken. In his opinion, Rhodan had suffered more in the past 15 minutes than he deserved. The slight doubt in Rhodan' s voice was too much.

   "Don't you know me better than that?" he asked softly. "Did you seriously think that I'd leave you stuck here? Didn't you just get me out of a similar pinch, only two days ago?"

   Rhodan straightened up. "And Putzi...?"

   Pucky looked past him. "We all have to die sometime, Perry. We can't all live forever. Some go sooner, some later. It wasn't your fault."

   Rhodan leaned back against the wall. "Thank you, Pucky."

   They looked at each other. Rhodan's despair faded from his features when he again reached out his hand and Pucky took it.

   "Putzi's death wasn't a complete loss, Perry. We know now what we wanted to know. Putzi's death sealed the fate of the robots. Now we know their secret. We also know we have to conquer them if we want to continue to exist. The robots will attack every world where there is organic life."

   Rhodan nodded. "That's true enough but there's something else we should both keep in mind, Pucky. What was the use of your vengeance? You destroyed a combat robot that could have advanced us a long way if we'd had a chance to examine it. There would have been a more certain and swift revenge if just that one analysis had placed a weapon against them in our hands."

   "Who among us doesn't make mistakes?" asked Pucky as he looked up guilelessly at Rhodan. "Just tell me who?" Rhodan returned his look and smiled. Then they teleported back to life.

   The giant salvage ships lay in a semi-circle around the remains of the derelict. Cranes working in unison were loading the still tremendous sections on board. Whenever some of the parts were too big they were further cut down by portable energy cutters.

   The glowing wall of the atom fire was still 15 km away but the heat was beginning to be unbearable. The Theodorich had landed in order to provide as much cool air as possible to the work details. The gliders had long since returned to their hangars on board the flagship. Standing outside the Theodorich were Jefe Claudrin, Bell, Rhodan and Major Nacro. They were discussing the future possibilities of their completed operation.

   "Well," said Chief Engineer Nacro, "we've finally taken one of the enemy ships intact. With that we ought to get somewhere."

   "Intact, you say? That's a good one!" rumbled Claudrin while pointing to the sliced sections of the wreck. "We had to destroy a lot, doing it this way."

   "Those pieces should be enough," replied Nacro with optimism. "We have specialists in the labs who can make something out of a mote of dust-and what you see there is far from being a speck of dust. Just remember that we were able to salvage close to 1000 robots."

   Claudrin conceded this with a nod but left the answer to Rhodan.

   "You have a point, Major. Have you noted, by the way, that we were able to deactivate these robots the moment we confirmed to them that we were the 'true life form?' In other words, from that moment on they trusted us and relinquished themselves to our care. We could do with them what we pleased. As long as we're handling them we have to keep our mental-absorbers turned on."    Pucky and Iltu were standing off to one side. They were watching the loading operation in relative silence. They spoke to each other now and then but for the most part they observed the work in passive detachment. However, Iltu's sensitive ears had picked up portions of the men's conversation. Something in her memory was bothering her but it took 5 minutes before she reacted.

   She suddenly whispered to Pucky. "I think there's still something else I should report to Rhodan. Wait here."

   "Is it that important?"

   "I think so." She nodded to him and padded over to the group of men. She plucked at Rhodan's sleeve. "Do you have a moment?" she asked.

   He looked down at her in surprise.

   "Oh, it's you! Yes, what is it?"

   "Something just came back to me, Perry. I had almost forgotten it. Do you remember when Pucky went to get you? You know the two of us had turned off our mental-absorbers in order to trace you. Well, I forgot to turn mine back on when we flew back from the hill. We landed close to the salvage ships while they were loading the parts of the fragment ship. That's when I picked up the impulses."

   This brought everyone to attention.

   Rhodan looked at her intently. "Impulses? What impulses are you talking about?"

   "They came from the wreck but I couldn't understand them. The little robots were also sending them out. It wasn't the usual question about the 'true life form' but something else. It was like waves of feelings and emotions or something like that."

   "Impossible!" exclaimed Rhodan, shaking his head perplexedly. "Robots can't be telepathic, and certainly they don't have feelings. There are some scientists who seriously claim this is possible but so far they haven't come up with any proof." He bent down closer to Iltu. "Are you certain you weren't deceived?"

   "Absolutely!" she replied unhesitatingly. "Those impulses were strong. I couldn't help sensing them but they were still indefinable. They came into me from every direction, and finally they became hostile and mean."

   "Mean? What are you trying to say?"

   Claudrin, Bell and Nacro listened tensely and tried not to miss a word of the conversation. Suspense was apparent on their faces.

   "I picked up various shreds of thought," Iltu continued. "Maybe if linked all together in some kind of sequence they had a connection. At first I sensed only a questioning. That was when we landed. You have to understand, Perry, that everything was questions-in fact one big question. The feel of the impulses was that of a question. Then in a kind of collective way the question feeling changed into surprise and uneasiness. That was at about the time when Ras and I and Pucky left the glider. Bell was with us, too. I figured that maybe I ought to turn on my absorber again but I didn't. I had become curious and thought that I was on the verge of making a discovery. So I listened some more."

   Rhodan nodded, suddenly comprehending. "And then the questions and surprise turned into anger and rage and enmity. Wasn't that so, Iltu?"

   "Yes, that's what happened but how did you know?"

   "I could well imagine it was that way, Iltu. But since then you turned on your absorber again, didn't you?" When she nodded affirmatively he smiled. Yet he seemed distraught as if he had made a great discovery he wasn't too happy about. "That specialist was right-the one with the theory that our robot enemies were capable of emotions. Do you know what that means, gentlemen? You don't? Well, then I will tell you. We are up against a form of intelligence that has never existed before in the galaxy. Just now I don't have the courage to describe the consequences of Iltu's observations but one of these days we're going to have to face them. I hope that by then our technicians will have unveiled a few secrets from this wreck."

   No one had any comment to make. Iltu went back to Pucky.

   The waves of radiation had come closer. The last of the derelict sections had been removed with antigrav platforms. The special work cranes had been retracted on board. The salvage ships reported that they were ready to take off.

   "Everybody on board," suggested Rhodan.

   Later in the Control Central of the Theodorich they witnessed the final act in the drama of "Mechanica." The planet died. Only a few areas of the surface were still dark. The zones between darkness and blinding brightness glimmered redly but finally the disintegrating matter encroached even there. Already "Mechanica" was shining more brightly than its sun.

   "The Laurins must have known of the robots longer than we have, and they have correctly evaluated the danger they represent. They destroyed their assumed home world without hesitation. I'd still like to know how they discovered it and why this didn't happen sooner. I wonder if we're the culprits. Do you think we are the ones who drew their attention to it?"

   "That's highly possible," Claudrin conjectured. "The Laurins show up wherever Terran ships go. They're hard to track and that's their advantage. The Manila circled 'Mechanica' for a whole week. It could be that Major Salzburger was observed by the Laurins."

   "Could be," admitted Rhodan. "A strange situation, actually. Three different races-human, invisible and robot encounter each other in the limitless reaches of the cosmos and fight each other in bitter hostility. One is the enemy of the other. There are no allies involved-except involuntarily as in the present case. The Laurins have helped us to obtain a fragment ship. And perhaps they will still help us to find the mysterious home world of the robots."

   The Theodorich continued to pick up speed but the screen magnification caused "Mechanica" to appear the same distance away. The planet was as large as a basketball and revealed no further traces of dark spots. Its entire mass was being converted into energy but only slowly. A new sun had come into existence.

   It was a cosmic phenomenon. Beyond the Milky Way was a system with two suns and two planets. Of course one of the suns remained in a normal orbit instead of swinging about the other one with a common center. The ship was 5 light minutes away from "Mechanica" when the planet exploded.

   So the chain reaction had not been entirely restrained. It had finally become spontaneous. "Mechanica" spread out like a nova, an expanding ball of gaseous, glowing matter. It happened so swiftly that the men could only stand before the screen in spellbound amazement and watch the terrible but magnificent spectacle of a dying world. They failed to perceive the deadly menace that raced after them at the speed of light.

   An excited voice on the loudspeaker jolted them out of their trance. It was Admiral Vassilov, commander of the task fleet.

   "Sir, it's a nova! Your orders?"

   Rhodan seemed to awaken from a dream. He reluctantly turned his gaze from the main screen to see Vassilov staring down at him worriedly from another.

   "What's your location, Admiral?"

   "Five light minutes from 'Mechanica,' sir. We must go to light speed immediately or we are lost! The nova is expanding at light velocity!"

   Still immersed in thought, Rhodan failed to understand at first. "Then we have enough time. At our present acceleration we could reach light speed in two minutes if necessary. We still have a 4-minute lead."

   Vassilov stared back, horrified. "But sir... there isn't a minute to spare! Give us your order!"

   "He's right!" said Claudrin suddenly as he shoved a lever forward. In the depths of the ship there was a more intense vibration. Several meter needles on the panel jumped upward. "Maximum acceleration!"

   "To maximum, sir!" Vassilov confirmed with relief, and he relayed the command to his fleet. He was actually not aware that the order had been given by Claudrin instead of Rhodan.

   Rhodan looked again at the big screen and seemed to ignore the incident. In a flash he realized the error he had almost committed. They were not yet out of danger. The glowing planet was expanding at light velocity and was sending its deadly particles into the void in all directions. There were no hypercom relay satellites in operation so the light had taken 5 minutes to reach the Theodorich. When the first expansion of "Mechanica" was seen on the viewscreen, 5 minutes had already passed.

   If the Theodorich had been standing stationary in space it would have been doomed immediately. The beginning of the apparent expansion coincided with each second of time that it took the visual effect to reach the screen. Fortunately the Theodorich was already moving at 75% light speed, however. The wave of death was only gaining on it at the rate of 75000 km per second.

   The planet "died" on the viewscreen faster than in actuality. "Mechanica" swelled outward until it embraced the system itself and covered the entire range of vision. The. lightwaves overran themselves in a reverse Doppler effect. The faster the Theodorich travelled the more confusing the optical translation became.

   "What's our present acceleration?" asked Rhodan, breaking the tense silence.

   "Light speed in 20 seconds," announced Claudrin. His face still reflected concern. When Red Thomas, the First Officer, pointed anxiously at the viewscreen he nodded. "We're going almost as fast as "Mechanica's" lightwave and radiation propagation. The optical effects are cumulative. It's taking us only seconds to see what happened in minutes. We're seeing past and present simultaneously."

   The screen had gone white. The planet could no longer be seen as such. In the blast of light all contours had been lost.

   Claudrin activated several controls. "I've turned on the defense screens, sir," he said when he noted Rhodan's questioning look. "Outside the void isn't cold anymore-it's unbearably hot. The first radiations of the new sun have just reached us..." He looked at his instruments. "The Theodorich has now reached light speed, sir."

   "That takes us out of danger," said Rhodan with relief. " And Vassilov also."

   "It was close, sir," commented Claudrin. But he said no more about it.

   Bell heaved a sigh of relief. "We scraped through again, Perry." When he looked back at the viewscreen his eyes widened in astonishment. "What the heck do you call that?"

   Rhodan didn't answer immediately. The Theodorich was not by far out spacing normal light speed and was thus overtaking the lightwaves from "Mechanica" which had passed it previously. The planet began to shrink in size although the magnification remained and was still optically simulating a constant distance. The glowing gases were falling back into the newly created sun.

   Rhodan smiled and finally answered. "In a sense we are experiencing a time journey, Bell. We're overtaking the lightwaves that transmitted the spectacle to us in the first place. The explosion that has already happened is visually still in the future for us now. What you see presently on the screen is 'Mechanica' as it existed 10 or 15 minutes ago. It will now continue to fall more swiftly into the past."

   Everyone watched the screen in spellbound fascination. "Mechanica" continued to shrink until it became a small sun no larger than a basketball. Then the dark spots on its surface began to increase where the atom fire had not yet reached certain areas. The white-glowing seas became smaller and separated gradually into bright round patches. And finally they disappeared entirely.

   "Will you look at that!" Bell half whispered, deeply impressed.

   Rhodan paid no attention to him. "What's our velocity now?" he asked Claudrin.

   The commodore checked his instruments. "100 times light speed."

   "Then the process we're seeing is happening 100 times faster in the opposite sense. Can you turn up the magnification enough so that we can pick out details on the surface?"

   "The picture will be blurred," he advised but nevertheless he was already at his controls.

   "Mechanica" grew larger but less distinct. It seemed as if the Theodorich were falling. back toward it. Some details became recognizable. A city came into view although it was unclear and distorted. Then they saw tiny dots on a plateau. They moved about much too quickly to be recognizable. The transmitter station was no sooner there than it was gone. The plateau was empty again. Some time later the Theodorich was seen spinning rapidly around the planet, and then it also vanished.

   Rhodan sighed and turned away. "The show could go on but unfortunately it has limitations. If the magnification weren't in effect, 'Mechanica' would be invisible to us. But the system itself is back to its original form, from our point of view. In 50000 years we'll be able to observe the explosion from Arkon."

   "We still see the planet on the screen," said Bell, "but it's long since turned into a fireball, a miniature sun. Who knows how many stars we see have long ceased to exist?"

   Rhodan pointed to another screen that gave an overall view of space. Small nebulous flecks hung motionlessly out there in the dark depths of Infinity. These were island universes which were many millions of light years distant.

   "Perhaps they don't exist anymore, and yet we've been planning to visit some of them one of these days. Maybe they've long since vanished, thousands of years ago. Who knows if the appearance of the Laurins and the robots might have something to do with that? Perhaps their own galaxy died and they've come to ours."

   Bell showed new interest. "Then you mean we can take time trips by taking advantage of the speed of light? Why haven't we ever tried that?"

   Rhodan smiled. "It isn't that simple, Bell. Even at a distance of a few light seconds, ordinary magnification isn't effective. Details on a planet's surface become indistinct and are lost. Of course if we find a method of capturing the lightwaves hurtling through space and reconstructing the original picture, then a simulated time trip would be possible. It's not a new idea by any means. Writers have been using that one for several centuries."

   "But-do you think it might be possible?"

   "Yes, it might be possible. "If we ever have less pressing problems to contend with we'll try it. Then you'll be able to see the Earth in the time of the dinosaurs."

   "But I couldn't personally be there?"

   "No, unfortunately that won't be possible. You would see nothing but an immaterial reconstruction of the past. Wouldn't you settle for that?"

   "For starters, I suppose so," Bell answered. He seemed to be satisfied.

   The men continued to watch the screen for some time. Finally "Mechanica" became such a blur that Claudrin suddenly cut off the magnification."Outside" resolved itself into a normal star.

   "Distance-100 light hours," he said. Rhodan turned away. "You know the course, Commander. I'll be in my cabin."

   He left the Control Central and went out into the wide corridor. He took his time, more than was his custom. An antigrav lift carried him deeper into the depths of the mighty space sphere. When he was close to his destination he stopped in front of a cabin door and looked at it. It was no different than other doors of this type. It was an exact duplicate of the door to the left and to the right.

   The door slid to one side.

   "You're not disturbing us, Rhodan. Come on in!"

   Rhodan might have guessed as much. All mental-absorbers on board the Theodorich had long since been turned off. Pucky had picked up his thought impulses and knew that he was standing outside. Rhodan smiled and went in.

   Iltu sat hunched in one corner of the couch and appeared to be a bit dishevelled. Her expression was spiteful and hinted of rebelliousness. When she saw Rhodan her features brightened.

   "Here now, what's going on?" he asked after Pucky had shut the door. "It looks as if you two have been fighting."

   "Hm-m... maybe you can call it that," answered Pucky, and he sat down on the edge of the couch. As Rhodan took a chair he added: "I've given her a piece of my mind."

   "Quite emphatically, if I'm not mistaken."

   "He struck me!" interjected Iltu shrilly.

   Rhodan had the impression that the real crisis was over with between himself and Pucky, concerning their troubled relationship of a few hours ago. If the two mousebeavers were quarrelling it meant they had all but forgotten Putzi's death.

   "Why did he strike you?" he asked.

   Pucky intervened. "I didn't really strike her at all, Perry. But the situation is-it's definitely expected some day that Iltu and I-well, that we will get married. Isn't that so?"

   Rhodan was too dumbfounded to have a ready answer. "Marry? What gave you that idea?"

   "Iltu is certainly not a child anymore, don't you agree?"

   "Yes... well... nobody says she is."

   "Well then! We will get married. Besides, Iltu wants to."

   "I do not!" Iltu shrilled again. "Pucky wants it! He's the one who wants to get married!"

   Rhodan raised his brows. "Oh? Now of course that's something entirely new. You want to get married?"

   Pucky glared angrily at Iltu. "What do you mean, 'want' to? Have to is more like it!"

   "Have to?" Rhodan was so amazed that he couldn't find words to express himself. He looked at the two mousebeavers in bewilderment.

   Pucky read his mind and suddenly began to giggle in a foolish manner while slapping his short little legs. "No! No! Not what you think! It's just that things should be proper. Iltu and I are together a lot. It would look much better if we were legally a pair, wouldn't you say so?"

   "Yes... of course..."

   "You see, that's what we thought, too. But since I'm the oldest and also the male side of this proposition, in this marriage were planning I should be the one to give orders and make decisions. Isn't that right?"

   "I don't want to get involved," said Rhodan discreetly.

   "He just wants to make all the decisions himself," chirped Iltu plaintively. "I'm not supposed to have anything to say. He's even thrashed me to prove his superiority. I will not marry such a monster-never!"

   Pucky raised his arms toward the ceiling. "What a lousy accusation to make!" he cried dramatically. "It was only a little education, nothing more!"    Rhodan got up. "I think I'd better leave you two alone. You still have a few days to come to straighten out your differences. Perhaps it would actually be best if you dropped this who1e idea of matrimony. There's little purpose to it if it begins with quarrelling." He nodded to them and left the cabin.

   Before he closed the door he heard Pucky call after him: "Yes, I think you're right. One shouldn't get mixed up with females-it only brings grief."

   Rhodan stood outside in the passage and smiled to himself. Then he heard something. Behind the cabin door there was a piercing whistle, then a shrill cry of pain. Something banged against the door and this was followed by the sound of scolding. Pucky seemed to be handing out more of his "education."    Rhodan opened the door quickly and looked inside. Pucky was lying on the floor. Iltu was sitting on him and was in the process of giving him a good slap on his ear. Then she got up triumphantly. Her crafty eyes beamed at Rhodan.

   "What a scoundrel!" she scolded while watching Pucky's attempt to get up again. "He wants to sneak out of the marriage-says he thinks it would be better to wait! The nerve of him! So maybe I'm supposed to be an old maid?" Rhodan shook his head and looked sympathetically at Pucky. "And here it was just the other way around a moment ago." He smiled. "Pucky was all for the marriage but you were not."

   "Yes-he wanted to." She held her fist under Pucky's nose. "But now he's going to!"

   Rhodan opened the door, prepared to leave. Pucky walked under his arm to freedom. Outside in the corridor he seemed to regain his virility.

   "If there's going to be a wedding around here, I'll decide!" he said confidently-and he disappeared around the next corner.

   Rhodan attempted to console little Iltu. "Men always like to believe they have the power of decision," he told her. He gave her a pat on the shoulder and followed Pucky.