Millard Mitchell
— James T. Connie
Gilbert Roland
— Punch Pinero
John Beal
— Dr. Wilson aka Doc
Marshall Thompson
— Blivens Scott
Alf Kjellin
— Clem Randall
Harry Morgan
— Dawson
Jay Adler
— Steve Kopac
Regis Toomey
— Dr. Gordon
Fay Roope
— Warden George Potter
Carleton Young
— Captain Haggarty
John Marley
— Knotty Johnson
Russ Conway
— Dr. Hughes
Byron Foulger
— Dr. Brint, Dentist
Charles Bronson
— Jocko
Jack Carr
— Harry Higgins
Joe Haworth
— Convict 9670
Dan Jackson
— Convict 1538
Chester Jones
— Convict 7546
Frank Mitchell
— Convict 3007
Vincent Renno
— Convict 9919
Paul Hoffman
— Convict
Allen Mathews
— Convict
George Eldredge
— Convict
Dick Cogan
— Convict
Peter Virgo
— Convict
George Stern
— Convict
Joe Palma
— Convict Driver
Fred Kelsey
— Store Detective
Grace Lenard
— Waitress
Joe McTurk
— Big Benny