Roy William Neill
Director
Edmund L. Hartmann
Screenplay
Brenda Weisberg
Story
Paul Landres
Editor
John B. Goodman
Art Direction
Paul Gangelin
Story
Paul Sawtell
Original Music Composer
Ralph M. DeLacy
Art Direction
Roy William Neill
Producer
Arthur Conan Doyle
Characters
Roy William Neill
Screenplay
George Robinson
Director of Photography
Basil Rathbone
Sherlock Holmes
Nigel Bruce
Doctor Watson
Gerald Hamer
Potts / Tanner / Ramson
Paul Cavanagh
Lord Penrose
Arthur Hohl
Emile Journet
Miles Mander
Judge Brisson
Kay Harding
Marie Journet
David Clyde
Police Sergeant Thompson
Ian Wolfe
Drake
Victoria Horne
Nora
Al Ferguson
Attendant (uncredited)
Olaf Hytten
Hotel Day Desk Clerk (uncredited)
Bobby Hale
Villager in Pub (uncredited)
Harry Allen
Gertrude Astor
Clyde Fillmore
Charles Francis
George Kirby
Pietro Sosso
