Horatio 'Boston Blackie' Black
Chester Morris
Dooley Watson
Erik Rolf
Elwood "Tex" Stewart (Uncredited)
Arthur Hunnicutt
Jumbo Madigan (Uncredited)
Cy Kendall
Johnny Watson (Uncredited)
Larry Olsen
State Governor Rutledge (Uncredited)
Pierre Watkin
Detective Sergeant Matthews (Uncredited)
Walter Sande
Carpet Man (Uncredited)
Jack Carr
Richard Alexander
Warden J.A. Edwards (Uncredited)
George Anderson
Woman in Hallway (Uncredited)
Jessie Arnold
Manny Vogel (Uncredited)
Trevor Bardette
Mary Watson
Jeanne Bates
Sandy (Uncredited)
Eddie Bruce
Richie Adair (Uncredited)
Sally Cairns
Policeman Frank (Uncredited)
Eddy Chandler
Parole Board Member (Uncredited)
James Conaty
Police Desk Sergeant (Uncredited)
Heinie Conklin
Miss Bailey (Uncredited)
Marie De Becker
Reporter at Parole Board Hearing (Uncredited)
Sayre Dearing
Minta Durfee
Prison Warden Root (Uncredited)
Ben Erway
George Phillips (Uncredited)
Jerry Frank
Insp. John Farraday
Richard Lane
Joe Painter (Uncredited)
Joel Friedkin
Wilfred Thompson (Uncredited)
Kit Guard
Red Taggart (Uncredited)
John Harmon
Carl M. Leviness
Policeman (Uncredited)
George Magrill
William Jones (Uncredited)
Al Murphy
Chairman of Parole Board (Uncredited)
Forbes Murray
Frank O'Connor
Parker Gray (Uncredited)
Brian O'Hara
Policeman Lally (Uncredited)
Dick Rush
The Runt
George E. Stone
Jerome Wagner (Uncredited)
Harry Semels
Driver (Uncredited)
John Tyrrell
British Newsman (uncredited)
Bobby Hale
Arthur Manleder
Lloyd Corrigan
Nails Blanton (Uncredited)
Douglas Fowley
Benny Hines (Uncredited)
Sid Melton
Policeman Joe (Uncredited)
Ray Teal
Edna Counihan (Uncredited)
Maude Eburne
Stunts
Chuck Hamilton
Director
William Castle
Music Director
Morris Stoloff
Additional Music
Friedrich Hollaender
Assistant Director
Earl Bellamy
Producer
Wallace MacDonald
Matty Roubert
Sidney Cutner
Eddie Parker
Characters
Jack Boyle
Writer
Paul Yawitz
Set Decoration
Robert Priestley
Editor
Jerome Thoms
Art Direction
Paul Murphy
Makeup Artist
Clay Campbell
Lionel Banks
Director of Photography
Ernest Miller
Werner R. Heymann
Gregory Stone
Sound Engineer
Earl Snyder
Ben Oakland
George Parrish