For over 30 years, Klaus Vogel has been a teacher out of passion – and for most of that time, in prison. He is the principal at the juvenile detention center in Berlin and teaches delinquent youth to help them achieve a school diploma and reintegrate into life after incarceration. In this book, he shares from his wealth of experience, discussing successes, failures, what makes teaching in prison unique, and stories of young people who can leave prison behind and start anew, as well as those who keep returning. And there are quite a few of them. Framed by numerous anecdotes from his long professional life, Klaus Vogel explains what is lacking in the approach to delinquent youth, what needs to change – and why he still practices his profession with deep conviction and full dedication despite all the problems and challenges.