Holmes and Watson match wits with an opera star intent on blackmailing a king.
Eille Norwood
Sherlock Holmes
Alfred Drayton
King Wilhelm von Ormstein
Miles Mander
Godfrey Norton
Hubert Willis
Dr. John Watson
Mme. d'Esterre
Mrs. Hudson
Joan Beverley
Irene Adler
Annie Esmond
Maid
William J. Elliott
Writer
Maurice Elvey
Director
Arthur Conan Doyle
Original Story
Germain Burger
Director of Photography
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