前陆军军官詹姆森在圣昆丁监狱担任狱警。乔是他新女友梅的哥哥，因抢劫罪被判入狱。当詹姆森试图将违法者与顽固罪犯分开时，坏蛋汉森试图挑起事端，告诉乔詹姆森对他妹妹的兴趣。
Pat O'Brien
Capt. Stephen Jameson
Humphrey Bogart
Joe 'Red' Kennedy
Ann Sheridan
May
Barton MacLane
Lt. Druggin
Joe Sawyer
'Sailor Boy' Hansen
Veda Ann Borg
Helen
Archie Robbins
Mickey Callahan
Joe King
Warden Taylor
Gordon Oliver
Captain
Garry Owen
Dopey
Marc Lawrence
Venetti
Emmett Vogan
Lieutenant
William Pawley
Convict
Al Hill
