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Basil Rathbone
Sherlock Holmes
Nigel Bruce
Doctor Watson
Lionel Atwill
Professor Moriarty
William Post Jr.
Dr. Franz Tobel
Kaaren Verne
Charlotte Eberli
Dennis Hoey
Inspector Lestrade
Holmes Herbert
Sir Reginald
Mary Gordon
Mrs. Hudson
Harry Cording
Jack Brady (uncredited)
Harold De Becker
Peg Leg (uncredited)
Paul Fix
Mueller (uncredited)
Henry Victor
Professor Frederic Hoffner (uncredited)
John Burton
RAF Officer (uncredited)
Paul Bryar
Swiss Waiter (uncredited)
Whit Bissell
London Bobbie (uncredited)
