Characters played by Arthur Wontner
Sherlock Holmes
Characters played by Jane Welsh
Lady Violet Lamsden
Characters played by Miles Mander
Claude Holford
Characters played by Francis L. Sullivan
Baron von Guntermann
Characters played by Ian Fleming
Dr. Watson
Characters played by Dino Galvani
Carlo Ravelli
Characters played by Philip Hewland
Insp. Lestrade
Characters played by Minnie Rayner
Mrs. Hudson
Characters played by Anthony Holles
Marquess de Chaminade
Characters played by Herbert Lomas
Manning
Characters played by Kenji Takase
Chang Wu
Characters played by Ben Welden
Pinkerton Agent