Below is a sample Introduction in full using the Hook + Bridge + Thesis Statement method:

(Hook) Recent studies show that crime rates have been increasing and this has meant an increase in the number of people who go to prison. (Bridge) However, does this mean that changes need to be made to prisons and prison sentences to account for this growing number? (Thesis Statement) In my opinion, increasing sentences for criminals and building more prisons are two effective ways to assist with the reduction of crime, and there are key reasons to justify this position.