Sherlock Holmes
Basil Rathbone
Doctor Watson
Nigel Bruce
Mueller (uncredited)
Paul Fix
Professor Frederic Hoffner (uncredited)
Henry Victor
RAF Officer (uncredited)
John Burton
Swiss Waiter (uncredited)
Paul Bryar
London Bobbie (uncredited)
Whit Bissell
Braun (uncredited)
Rudolph Anders
Scotland Yard Detective (uncredited)
Colin Kenny
Gottfried (uncredited)
George Burr Macannan
Kurt (uncredited)
Harry Woods
Professor Moriarty
Lionel Atwill
Dr. Franz Tobel
William Post Jr.
Charlotte Eberli
Kaaren Verne
Inspector Lestrade
Dennis Hoey
Sir Reginald
Holmes Herbert
Mrs. Hudson
Mary Gordon
Jack Brady (uncredited)
Harry Cording
Peg Leg (uncredited)
Harold De Becker
Music
Richard Hageman
Original Music Composer
Frank Skinner
Story
Arthur Conan Doyle
Director
Roy William Neill
Screenplay
Edward T. Lowe Jr.
Scott Darling
Edmund L. Hartmann
Adaptation
Art Direction
Jack Otterson
Set Decoration
Russell A. Gausman
Costume Design
Vera West
Hans J. Salter
Music Director
Charles Previn
Associate Producer
Howard Benedict
Director of Photography
Lester White
Editor
Otto Ludwig