Chaney plays two roles: mad scientist Arthur Lamb and Lamb's "experiment", known only as the Ape Man. This hideous creature was the result of Lamb's attempts to transplant animal glands into human beings. A lost film.
as Dr. Arthur Lamb / The Ape Man
as Robert Sandell
as Angela Marshall
as Mrs. Sandell
as Mrs. Lamb
as Bessie
as Angela's Mother
as Beast Man (uncredited)
