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