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