Elenco
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Dr. John H. Watson
Patricia Morison
Mrs. Hilda Courtney
Frederick Worlock
Colonel Cavanaugh
Harry Cording
Hamid
Carl Harbord
Inspector Hopkins
Holmes Herbert
Ebenezer Crabtree
Edmund Breon
Julian 'Stinky' Emery
Patricia Cameron
Evelyn Clifford
Mary Gordon
Mrs. Hudson
Ian Wolfe
Commissioner of Scotland Yard
Leyland Hodgson
Tour Guide
Marjorie Bennett
Antique Shop Assistant (uncredited)
William H. O'Brien
Detective at Murder Scene
Frank Baker
Photographer
Sally Shepherd
Wallace Scott
Joe Cisto
Jack Curtis
Pub Patron (uncredited)
Cyril Delevanti
Convict at Dartmoor Prison (uncredited)
Charlie Hall
Cab Driver (uncredited)
Olaf Hytten
Alfred - Auction House Bookkeeper (uncredited)
Frank Mills
Pub Patron (uncredited)
Lillian Bronson
Minister's Wife (uncredited)
Bobby Hale
Pub Patron (uncredited)
Alexander Pollard
Crabtree's Assistant at Auction (uncredited)
Equipe
Roy William Neill
Director
Frank Gruber
Adaptation
Arthur Conan Doyle
Story
Leonard Lee
Screenplay
Martin Obzina
Art Direction
Roy William Neill
Producer
Edward R. Robinson
Set Decoration
Vera West
Costume Design
Howard Benedict
Executive Producer
Jack Pierce
Makeup Department Head
Maury Gertsman
Director of Photography
Russell A. Gausman
Set Decoration
Carmen Dirigo
Hairstylist
Saul A. Goodkind
Editor
Milton Rosen
Music Director
Bernard B. Brown
Sound Director
Jack Otterson
Art Direction