Casting

Director

Roy William Neill

Producer

Roy William Neill

Writer

Bertram Millhauser

Screenplay

Bertram Millhauser, Lynn Riggs

Characters

Arthur Conan Doyle

Director of Photography

Lester White

Editor

Otto Ludwig

Art Direction

Jack Otterson

Set Decoration

Russell A. Gausman

Costume Design

Vera West

Basil Rathbone
Basil RathboneSherlock Holmes
Nigel Bruce
Nigel BruceDoctor Watson
Marjorie Lord
Marjorie LordNancy Partridge
Henry Daniell
Henry DaniellWilliam Easter
George Zucco
George ZuccoHeinrich Hinckel aka Richard Stanley
John Archer
John ArcherNaval Lt. Pete Merriam
Gavin Muir
Gavin MuirMr. Lang, government agent
Edmund MacDonald
Edmund MacDonaldDetective Lt. Grogan
?
Don TerryHowe
Mary Gordon
Mary GordonMrs. Hudson
Bradley Page
Bradley PageCady
Clarence Muse
Clarence MuseGeorge
Mary Forbes
Mary ForbesMrs. Pettibone
Holmes Herbert
Holmes HerbertMr. Ahrens
Thurston Hall
Thurston HallSen. Henry Babcock
Ian Wolfe
Ian WolfeAntiques Store Sales Clerk
?
John BurtonArmy Inspector (uncredited)
Gerald Hamer
Gerald HamerAlfred Pettibone
Gilbert Emery
Gilbert EmerySir Henry Marchmont (uncredited)
Margaret Seddon
Margaret SeddonMiss Pringle (uncredited)
?
Mary FieldParty Pianist (uncredited)
Colin Kenny
Colin KennyHotel Doorman (uncredited)
Caroline Frances Cooke
Caroline Frances CookeMrs. Ruxton