Lon Chaney Jr. as Dr. Mark Steel (as Lon Chaney)

Patricia Morison as Stella Madden

J. Carrol Naish as Inspector Gregg

David Bruce as Robert 'Bob' Duval

Ramsay Ames as Maria Steele

Fay Helm as Mrs. Duval

Holmes Herbert as Bryant, the Butler

Alec Craig as Bill, the Watchman

Frederick Giermann as Marion's Father (as Fred Gierman)

Lisa Golm as Marion's Mother

Charles Wagenheim as Coroner

Mary Hale as Marion

George Eldredge as District Attorney

John Elliott as Priest

Earle Hodgins as

Charles R. Moore as

Norman Rainey as

Kernan Cripps as

Al Ferguson as

Robert F. Hill as

David Hoffman as

Perc Launders as

Rex Lease as

Frank Marlowe as

Paul Phillips as

Jack Rockwell as

Jack C. Smith as