A wealthy society doctor decides to research the medical aspects of criminal behaviour by becoming one himself. He joins a gang of thieves and proceeds to wrest leadership of the gang away from it's extremely resentful leader.

• First National Pictures
• Warner Bros. Pictures
• Edward G. Robinson
• Claire Trevor
• Humphrey Bogart
• Allen Jenkins
• Donald Crisp
• Gale Page
• Henry O'Neill
• John Litel