In 19th century Paris, a maniac abducts young women and injects them with ape blood in an attempt to prove ape-human kinship but constantly meets failure as the abducted women die.
Sidney Fox
as Mlle. Camille L'Espanaye
Bela Lugosi
as Dr. Mirakle
Leon Ames
as Pierre Dupin
Bert Roach
as Paul
Betty Ross Clarke
as Mme. L'Espanaye
Brandon Hurst
as Prefect of Police
D'Arcy Corrigan
as Morgue Keeper
Noble Johnson
as Janos The Black One
Arlene Francis
as Woman of the Streets
Ted Billings
as Sideshow Spectator (uncredited)
Herman Bing
as Franz Odenheimer (uncredited)
Joe Bonomo
as Gorilla (uncredited)
