Sherlock Holmes
John Barrymore
Dr. Watson
Roland Young
Dr. Leighton
Lumsden Hare
James Larrabee
Anders Randolf
Alf Bassick
Robert Schable
Count Von Stalburg
David Torrence
Baron Orlonieff
Albert Bruning
Otto
Robert Fischer
Billy
Jerry Devine
Alice Faulkner
Carol Dempster
Professor Moriarty
Gustav von Seyffertitz
Craigin
Louis Wolheim
Sid Jones
Percy Knight
Forman Wells
William Powell
Madge Larrabee
Hedda Hopper
Prince Alexis
Reginald Denny
Rose Faulkner
Peggy Bayfield
Executive Producer
Samuel Goldwyn
Story
Arthur Conan Doyle
Director
Albert Parker
Producer
F.J. Godsol
Art Direction
Charles L. Cadwallader
Director of Photography
J. Roy Hunt
Writer
Earle Browne
Marion Fairfax