Fernando Casanova

Dr. Michael Malthus / Dr. John Malthus [billed as Rock Madison]

Sonia Furió

Beth

Katherine Victor

Mrs. Roger Vernon

Robert Christopher

Det. Lt. Ed Jamieson

Fred Hoffman

Detective Sergeant

Aurora Alvarado

Frieda the Maid, a victim

Rosa Maria Gallardo

Miss Benson, a victim

Bruno VeSota

19th Century Police Inspector

Lloyd Nelson

Mr. Simms

Chuck Niles

Masseur

Ann Wells

Nurse Janey, on phone

George Todd

Willard Gross

Jerry Warren