It has been years since I saw a movie directed by the late John Frankenheimer and it's a shame since I have really a weak spot for this director. Anyway, this is the last movie of his that I have seen and it must be one of his best. It stars the great Burt Lancaster who gives a very good performance. It is a simple but still rather spellbinding story. Even though it takes place in a prison, for once, it doesn't deal with jailbreak which I found quite refreshing. Furthermore, it is pretty obvious that this flick has been an inspiration for all the flicks dealing with the prison life that came afterwards such as 'The shawshank redemption'. I really liked the directing and the way they decided to show a man who had a violent past but who still managed to find something inspiring in such a dreadful place. To be honest, I'm not really familiar with Burt Lancaster but he sure displayed some fine acting skills here and I will definitely watch more movies starring this guy. To conclude, in my opinion, it is a forgotten gem, I really liked it and it is definitely worth a look, especially if you like the genre.