Preston Foster
— John 'Killer' Mears, Cell 4
Howard Phillips
— Richard 'Dick' Walters, Cell 5
George E. Stone
— Joe Berg, Cell 1
Noel Madison
— D'Amoro, Cell 6
Alan Roscoe
— Kirby... Cell 7 (as Allan Roscoe)
Paul Fix
— Eddie Werner... Cell 8
Alec B. Francis
— Father O'Connor
Albert J. Smith
— Drake, Guard
Al Hill
— Fred Mayer... Cell 3
Daniel L. Haynes
— Sonny Jackson... Cell 2
Edward Van Sloan
— Rabbi
Louise Carter
— Mrs. Walters
Ralph Theodore
— Pat Callahan... Principal Keeper
Jack Kennedy
— Mike O'Flaherty, Guard
William Scott
— Peddie... Guard
Kenneth MacDonald
— Harris... Guard
Frank Sheridan
— Warden Frank Lewis