A doctor's research into the roots of evil turns him into a hideous depraved fiend.
John Barrymore
Dr. Henry Jekyll / Mr. Edward Hyde
Brandon Hurst
Sir George Carewe
Martha Mansfield
Millicent Carewe
Charles Lane
Dr. Richard Lanyon
Cecil Clovelly
Edward Enfield
Nita Naldi
Miss Gina
Louis Wolheim
Music Hall Proprietor
Alma Aiken
Extra (uncredited)
