Credits
Cast

Chester Morris
Horatio 'Boston Blackie' Black

Trudy Marshall
Irene

Constance Dowling
Dinah Moran

Richard Lane
Inspector Farraday

George E. Stone
The Runt

Frank Sully
Sgt. Matthews

Warren Ashe
John Lampau, alias John Jani

Selmer Jackson
Warden Lund

Wanda Perry
Secretary (uncredited)
Art
Charles Clague
Art Direction
William F. Calvert
Set Decoration
Camera
George Meehan
Director of Photography
Crew
Malcolm Stuart Boylan
Additional Dialogue
Directing

D. Ross Lederman
Director
Editing
James Sweeney
Editor
Production

Ted Richmond
Producer
Sound
Mischa Bakaleinikoff
Music Director
Writing
Jack Boyle
Characters
Harry Essex
Screenplay