Bela Lugosi

Prof Leonide

George Zucco

Dr. Josef Van Ee

Nat Pendleton

Bill 'Bull' Raymond

Molly Lamont

Laura Van Ee

Joyce Compton

Jane Cornell

Gladys Blake

Lilly Beth

Roland Varno

Ward Van Ee

Angelo Rossitto

Indigo

Douglas Fowley

Terry Lee

Stanley Andrews

Pathologist

Lee Bennett

Rene the Killer

Stanley Price

Autopsy Surgeon

Dorothy Christy

Mrs. Williams (uncredited)

Christy Cabanne