Full Credits
33 members

Basil Rathbone
Sherlock Holmes

Nigel Bruce
Dr. John H. Watson

Gale Sondergaard
Adrea Spedding

Dennis Hoey
Insp. Lestrade

Vernon Downing
Norman Locke

Alec Craig
Radlik

Arthur Hohl
Adam Gilflower

Mary Gordon
Mrs. Hudson

Teddy Infuhr
Larry (uncredited)

Donald Stuart
Artie - Shooting Gallery Attendant (uncredited)

Harry Cording
Fred Garvin (uncredited)

Belle Mitchell
Fortune Teller (uncredited)

Angelo Rossitto
Obongo - Pygmy (uncredited)

Sylvia Andrew
Charwoman (uncredited)
Marie De Becker
Charwoman (uncredited)

Jimmy Aubrey
News Vendor (uncredited)
Brandon Beach
Carnival Patron (uncredited)
Frank Benson
Toy Doll Attendant (uncredited)

Lydia Bilbrook
Susan (uncredited)
John Burton
Radio Announcer (uncredited)
James Carlisle
Casino Patron (uncredited)
Jack Deery
Casino Patron (uncredited)
George Kirby
News Vendor (uncredited)

Stanley Logan
Robert (uncredited)

Wilbur Mack
Casino Patron (uncredited)
Edmund Mortimer
Casino Patron (uncredited)

William H. O'Brien
Doorman (uncredited)

John Roche
Casino Croupier (uncredited)

Gene Roth
Henchman Taylor (uncredited)
Arthur Stenning
Plainclothesman (uncredited)

Florence Wix
Casino Patron (uncredited)
Herschel Graham
Casino Patron (uncredited)

Ethelreda Leopold
Casino Patron (uncredited)
13 members
Roy William Neill
Director
Bertram Millhauser
Screenplay
Arthur Conan Doyle
Story
Roy William Neill
Producer
Charles Van Enger
Director of Photography
Bernard B. Brown
Sound Director
Hans J. Salter
Music Director
John B. Goodman
Art Direction
Martin Obzina
Art Direction
Russell A. Gausman
Set Decoration
Edward R. Robinson
Set Decoration
Vera West
Costume Design
William Austin
Editor