A psychologist takes on the daunting task of getting into the mind of prisoners. He must gain the trust and cooperation from a group of men who have no reason to help him and who might enjoy killing him.
James T. Connie
Millard Mitchell
Punch Pinero
Gilbert Roland
Dr. Wilson aka Doc
John Beal
Blivens Scott
Marshall Thompson
Clem Randall
Alf Kjellin
Dawson
Harry Morgan
Steve Kopac
Jay Adler
Dr. Gordon
Regis Toomey
Warden George Potter
Fay Roope
Captain Haggarty
Carleton Young
Knotty Johnson
John Marley
Dr. Hughes
Russ Conway
Dr. Brint, Dentist
Byron Foulger
Jocko
Charles Bronson
Harry Higgins
Jack Carr
Convict 9670
Joe Haworth
Convict 1538
Dan Jackson
Convict 7546
Chester Jones
Convict 3007
Frank Mitchell
Convict 9919
Vincent Renno
Convict
Paul Hoffman
Convict
Allen Mathews
Convict
George Eldredge
Convict
Dick Cogan
Convict
Peter Virgo
Convict
George Stern
Convict Driver
Joe Palma
Store Detective
Fred Kelsey
Waitress
Grace Lenard
Big Benny
Joe McTurk
Blonde Tilly
Shirley Mills
Test Guard
John Monaghan
Guard
Dick Curtis
Guard
Billy Nelson
Guard on Dump Truck
Eddie Parker
Baker Foreman
Barney Phillips
Mrs. Randall
Carol Savage
Banker
Harry Stanton
Driscoll
Charles Sullivan