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Basil Rathbone
Sherlock Holmes
Nigel Bruce
Dr. John Watson
Hillary Brooke
Lydia Marlowe
Henry Daniell
Professor James Moriarty
Paul Cavanagh
Sir George Fenwick
Matthew Boulton
Inspector Gregson
Eve Amber
Maude Fenwick
Frederick Worlock
Dr. Onslow
Percival Vivian
Dr. Simnell
Coulter Irwin
Corporal Williams
Sally Shepherd
Crandon
Mary Gordon
Mrs. Hudson
John Burton
Waring the Mesmerist (uncredited)
Harold De Becker
Shoelace Vendor Henchman (uncredited)
Tony Ellis
Carter the Hypnotized Subject (uncredited)
