Calificación
Reparto

Boris Karloff
Dr. John Garth

Evelyn Keyes
Martha Garth

Bruce Bennett
Dr. Paul Ames

Don Beddoe
Capt. McGraw

Edward Van Sloan
Dr. Ralph Howard

Ben Taggart
Warden Thompson

Pedro de Cordoba
Victor Sondini

Wright Kramer
George Wharton

Bertram Marburgh
Stephen Barclay

Robert Fiske
District Attorney

Frank Richards
Otto Kron - Convict

Kenneth MacDonald
Anson, Prison Guard

Ernie Adams
Sam - Hospital Prison Orderly

Frederick Burton
Governor Prentiss

Edward Earle
Dr. Nichols

Richard Fiske
Mandish