Elenco
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Doctor Watson
Dennis Hoey
Inspector Lestrade
Hillary Brooke
Sally Musgrave
Mary Gordon
Mrs. Hudson
Halliwell Hobbes
Alfred Brunton, the butler
Milburn Stone
Capt. Pat Vickery
Minna Phillips
Mrs. Howells
Arthur Margetson
Dr. Bob Sexton
Gavin Muir
Phillip Musgrave
Frederick Worlock
Geoffrey Musgrave
Norma Varden
Gracie the Barmaid
Peter Lawford
Young Sailor at Bar
Heather Wilde
Olaf Hytten
Captain MacIntosh
Eric Snowden
Sailor Playing Piano
Equipe
Roy William Neill
Director
Bertram Millhauser
Screenplay
Arthur Conan Doyle
Story
Roy William Neill
Producer
Charles Van Enger
Director of Photography
John B. Goodman
Art Direction
Harold H. MacArthur
Art Direction
Fred R. Feitshans Jr.
Editor
Vera West
Costume Design
Edwin Wetzel
Sound Designer
Russell A. Gausman
Set Decoration
Edward R. Robinson
Set Decoration
Bernard B. Brown
Sound Director
Hans J. Salter
Music Director