Ex-Army officer Jameson takes a job a prison guard at San Quentin. Joe, the brother of his new girlfriend May, is sentenced to the prison for robbery. When Jameson tries to separate lawbreakers from hardened criminals, badguy Hansen tries to stir up trouble by telling Joe about Jameson's interest in his sister.

• First National Pictures
• Warner Bros. Pictures
• Pat O’Brien
• Humphrey Bogart
• Ann Sheridan
• Barton MacLane
• Joe Sawyer
• Veda Ann Borg
• Archie Robbins
• Joe King