"San Quentin" presents a good view of what goes on behind the walls of state prisons, not so different from today, except for high tech gadgets that make escape more difficult.

Lieutenant Druggin (Barton MacLane) is relieved of his temporary position as yard captain, much to his dislike. When an army officer, Captain Steve Jameson (Pat O'Brien), accepts a two-year assignment to be his replacement, Druggin sets about to thwart Steve's changes, believing them to be too liberal.

Before arriving at his assignment, Steve spends a night in a club with his army buddies where he meets and falls in love with the singer, May Kennedy (Ann Sheridan), unaware that she has a criminal brother, Red Kennedy (Humphrey Bogart), bound for San Quentin following his capture at the club the same evening.

After meeting May's brother at San Quentin, Steve is determined to reform the young man without informing him that he knows and loves his sister. Red figures in on part of Steve's reform program, selecting those most likely to be rehabilitated for the fresh air road jobs, before based on seniority and good behavior alone. Steve convinces the prison board by explaining how many of the seasoned criminals take advantage of the old system to use the jobs outside the walls as means of escape. All goes awry when 'Sailor Boy' Hanson (Joe Sawyer) pulls strings with Druggin to get assigned with Red on the same work detail. Hanson needles Red about his sister being exploited by Steve by using her brother as a weapon. Hearing about Steve and May's relationship for the first time so angers Red that he throws in with Hanson and they make their getaway. It is now up to Steve to catch Red before he is totally lost to crime.

"San Quentin" has a stellar cast that raises this somewhat routine prison drama to higher ground. Humphrey Bogart's character runs the gamut of emotions but remains true to form as a wannabe tough guy with a chip on his shoulder. The gifted actress Ann Sheridan was seldom given an opportunity by the studio to strut her stuff, but she could make even the most thankless role shine. This time she is given an opportunity to show off her singing talent. Pat O'Brien, while not a versatile actor, could be counted on to give a good performance. The supporting cast of character actors makes every aspect of this tough prison drama believable.

Veteran director Lloyd Bacon delivers the goods in creating a fast paced film with an exciting chase scene near the end, filled with some daring stunt work, especially the motorcycle jump. There is exceptional camera work by Sidney Hickox of the environs of San Quentin, in particular the shots of the yard with the prisoners at times appearing almost surrealistic.

Humphrey Bogart, Ann Sheridan and Pat O'Brien star in this 1937 film detailing prison life.

A man and army official with a heart, O'Brien is sent to this prison to help reform it from a vicious guard played in his usual sinister way by Barton MacLane.

O'Brien falls for lounge singer Sheridan. Coincidentally, her brother is sent to the jail for armed robbery. Tough guy Bogart is reformed by O'Brien until a misunderstanding leads Bogie to believe that he is being treated well since O'Brien is stuck on his sister.

Jealous and angry of O'Brien being brought in over him, MacLane "arranges" a breakout of Bogart and another inmate with tragic results for all resulting.

This picture details when a criminal tries to go straight but other things just get in the way.

Marc Lawrence, who died recently in his 90s, is also excellent as one of the inmates.

The film also shows emotionally disturbed people being in the same prison as hardened criminals.

Note Veda Ann Borg in a small but captivating role.

Pat O'Brien is the new captain of the prison guard at San Quentin who clashes with guard Barton MacLane while romancing the sister (Ann Sheridan) of new convict Humphrey Bogart. A great WB prison flick; one of the best. Solid supporting cast of familiar faces. The leads are all great. Sheridan gets to sing a song. She's not as glamorous here as she would be in the '40s, but she's still a looker. Bogie is very entertaining in one of his early roles. He's got pals on the outside that can pull wires, doncha know? O'Brien and MacLane are good in roles they could play in their sleep. The prison stuff is better than the romantic subplot. Bogie fans will like it for his fun performance. Love that gangster tough guy lingo!