Elenco
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Dr. John Watson
Dennis Hoey
Inspector Lestrade
Evelyn Ankers
Naomi Drake
Miles Mander
Giles Conover
Ian Wolfe
Amos Hodder
Charles Francis
Francis Digby, curator
Holmes Herbert
James Goodram, courier
Richard Aherne
Museum Guard Bates
Mary Gordon
Mrs. Hudson
Rondo Hatton
The Hoxton Creeper
Harry Cording
George Gelder (uncredited)
Billy Bevan
Constable With Food Tray (uncredited)
Leyland Hodgson
Customs Officer (uncredited)
Eric Wilton
Chauffeur (uncredited)
Lillian Bronson
Maj. Harker's Housekeeper (uncredited)
Equipe
Bertram Millhauser
Writer
Virgil Miller
Director of Photography
Roy William Neill
Director
Roy William Neill
Producer
Ray Snyder
Editor
John B. Goodman
Art Direction
Arthur Conan Doyle
Original Story
Edward R. Robinson
Set Decoration
Russell A. Gausman
Set Decoration
Martin Obzina
Art Direction
Bernard B. Brown
Sound Director
Vera West
Costume Design
Paul Sawtell
Original Music Composer
Paul Sawtell
Music Director
Howard Benedict
Executive Producer