Cast
- Chester Morris as Horatio 'Boston Blackie' Black
- Erik Rolf as Dooley Watson
- Jeanne Bates as Mary Watson
- Richard Lane as Insp. John Farraday
- George E. Stone as The Runt
- Lloyd Corrigan as Arthur Manleder
- Richard Alexander as Carpet Man
- Murray Alper as Convict
- George Anderson as Warden J.A. Edwards
- Jessie Arnold as Woman in Hallway
Crew
- William Castle · Director
- Paul Yawitz · Writer
- Jack Boyle · Writer
- Wallace MacDonald · Producer
- Ernest Miller · Cinematographer
- Jerome Thoms · Editor