Chester Morris
Role: Horatio 'Boston Blackie' Black
Erik Rolf
Role: Dooley Watson
Jeanne Bates
Role: Mary Watson
Richard Lane
Role: Insp. John Farraday
George E. Stone
Role: The Runt
Lloyd Corrigan
Role: Arthur Manleder
Douglas Fowley
Role: Nails Blanton (Uncredited)
Sid Melton
Role: Benny Hines (Uncredited)
Ray Teal
Role: Policeman Joe (Uncredited)
Maude Eburne
Role: Edna Counihan (Uncredited)
Arthur Hunnicutt
Role: Elwood "Tex" Stewart (Uncredited)
Cy Kendall
Role: Jumbo Madigan (Uncredited)
Larry Olsen
Role: Johnny Watson (Uncredited)
Pierre Watkin
Role: State Governor Rutledge (Uncredited)
Walter Sande
Role: Detective Sergeant Matthews (Uncredited)
Jack Carr
Role: Carpet Man (Uncredited)
Richard Alexander
Role: Carpet Man (Uncredited)
George Anderson
Role: Warden J.A. Edwards (Uncredited)
Jessie Arnold
Role: Woman in Hallway (Uncredited)
Trevor Bardette
Role: Manny Vogel (Uncredited)
Eddie Bruce
Role: Sandy (Uncredited)
Sally Cairns
Role: Richie Adair (Uncredited)
Eddy Chandler
Role: Policeman Frank (Uncredited)
James Conaty
Role: Parole Board Member (Uncredited)
Heinie Conklin
Role: Police Desk Sergeant (Uncredited)
Marie De Becker
Role: Miss Bailey (Uncredited)
Sayre Dearing
Role: Reporter at Parole Board Hearing (Uncredited)
Minta Durfee
Role: Woman in Hallway (Uncredited)
Ben Erway
Role: Prison Warden Root (Uncredited)
Jerry Frank
Role: George Phillips (Uncredited)
Joel Friedkin
Role: Joe Painter (Uncredited)
Kit Guard
Role: Wilfred Thompson (Uncredited)
John Harmon
Role: Red Taggart (Uncredited)
Carl M. Leviness
Role: Parole Board Member (Uncredited)
George Magrill
Role: Policeman (Uncredited)
Al Murphy
Role: William Jones (Uncredited)
Forbes Murray
Role: Chairman of Parole Board (Uncredited)
Frank O'Connor
Role: Policeman (Uncredited)
Brian O'Hara
Role: Parker Gray (Uncredited)
Dick Rush
Role: Policeman Lally (Uncredited)
Harry Semels
Role: Jerome Wagner (Uncredited)
John Tyrrell
Role: Driver (Uncredited)
Bobby Hale
Role: British Newsman (uncredited)