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.
Lon Chaney
Dr. Arthur Lamb / The Ape Man
Raymond McKee
Robert Sandell
Jacqueline Logan
Angela Marshall
Virginia True Boardman
Mrs. Sandell
Fontaine La Rue
Mrs. Lamb
Aggie Herring
Bessie
Virginia Madison
Angela's Mother
Wallace Beery
Beast Man (uncredited)
