A mad doctor (Bela Lugosi) and his helpers (John Carradine, George Zucco) lure girls to his lab for brain work, to help his wife.
Dr. Richard Marlowe
Nicholas
Ralph Dawson
Betty Benton
Stella Saunders
Toby
Grego
Marie
Evelyn Marlowe
Sheriff
Mrs. Benton
Sam, gas station attendant
Alice, first motorist-victim seen
Zombie
Zombie
Zombie
S.K. - the Producer (uncredited)
Deputy
(scenes deleted/never filmed) (uncredited)
(scenes deleted/never filmed) (uncredited)