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)