Arthur Wontner
Sherlock Holmes
Lyn Harding
Prof. Moriarty
Leslie Perrins
John Douglas
Ian Fleming
Dr. John Watson
C
Charles Mortimer
Insp. Lestrade
Minnie Rayner
Mrs. Hudson
Michael Shepley
Cecil Barker
Jane Carr
Ettie Douglas
Ben Welden
Ted Balding
Roy Emerton
Boss McGinty
W
Wilfrid Caithness
Col. Sebastian Moran
C
Conway Dixon
Ames
E
Edmund D'Alby
Captain Marvin
E
Ernest Lynds
Jacob Shafter
G
George Spence
Scowrer (uncredited)