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)