Sherlock Holmes and the Secret Weapon

Basil Rathbone

as Sherlock Holmes

Nigel Bruce

as Doctor Watson

Lionel Atwill

as Professor Moriarty

William Post Jr.

as Dr. Franz Tobel

Kaaren Verne

as Charlotte Eberli

Dennis Hoey

as Inspector Lestrade

Holmes Herbert

as Sir Reginald

Mary Gordon

as Mrs. Hudson

Harry Cording

as Jack Brady (uncredited)

Harold De Becker

as Peg Leg (uncredited)

Paul Fix

as Mueller (uncredited)

Henry Victor

as Professor Frederic Hoffner (uncredited)

John Burton

as RAF Officer (uncredited)

Paul Bryar

as Swiss Waiter (uncredited)

Whit Bissell

as London Bobbie (uncredited)

Rudolph Anders

as Braun (uncredited)

Colin Kenny

as Scotland Yard Detective (uncredited)

George Burr Macannan

as Gottfried (uncredited)

Harry Woods

as Kurt (uncredited)