A mad doctor (Bela Lugosi) and his helpers (John Carradine, George Zucco) lure girls to his lab for brain work, to help his wife.
as Dr. Richard Marlowe
as Toby
as Nicholas
as Betty Benton
as Stella Saunders
as Ralph Dawson
as Evelyn Marlowe
as Alice
as Mrs. Benton
as Zombie
as Sheriff
as Deputy
as Grego
as Housekeeper
as Policeman (uncredited)
as S.K. - the Producer (uncredited)
as District Attorney (uncredited)
as Kidnapped Girl (uncredited)