Basil Rathbone

Sherlock Holmes

Nigel Bruce

Doctor Watson

Lionel Atwill

Professor Moriarty

William Post Jr.

Dr. Franz Tobel

Kaaren Verne

Charlotte Eberli

Dennis Hoey

Inspector Lestrade

Holmes Herbert

Sir Reginald

Mary Gordon

Mrs. Hudson

Harry Cording

Jack Brady (uncredited)

Harold De Becker

Peg Leg (uncredited)

Paul Fix

Mueller (uncredited)

Henry Victor

Professor Frederic Hoffner (uncredited)

John Burton

RAF Officer (uncredited)

Paul Bryar

Swiss Waiter (uncredited)

Whit Bissell

London Bobbie (uncredited)

Rudolph Anders

Braun (uncredited)

Colin Kenny

Scotland Yard Detective (uncredited)

George Burr Macannan

Gottfried (uncredited)

Harry Woods

Kurt (uncredited)

Roy William Neill

Director

Scott Darling

Screenplay

Edward T. Lowe Jr.

Screenplay

Hans J. Salter

Music

Edmund L. Hartmann

Screenplay

Arthur Conan Doyle

Story

Jack Otterson

Art Direction

Richard Hageman

Music

Edward T. Lowe Jr.

Adaptation

Charles Previn

Music Director

Scott Darling

Adaptation

Russell A. Gausman

Set Decoration

Frank Skinner

Original Music Composer

Vera West

Costume Design

Lester White

Director of Photography

Otto Ludwig

Editor

Howard Benedict

Associate Producer