The Sign of Four: Sherlock Holmes' Greatest Case

Arthur Wontner

as Sherlock Holmes

Isla Bevan

as Mary Morstan

Ian Hunter

as Dr. John Watson

Graham Soutten

as Jonathan Small

Herbert Lomas

as Maj. John Sholto

Gilbert Davis

as Det. Insp. Atherly Jones

Margaret Yarde

as Mrs. Smith

Roy Emerton

as The Tattooed Man

Mr. Burnhett

as Tattoo Artist

Charles Farrell

as Funfair Patron

Clare Greet

as Mrs. Hudson

Moore Marriott

as Mordecai Smith

Edgar Norfolk

as Capt. Morstan

Kynaston Reeves

as Bartholomew Sholto

Ernest Sefton

as Barrett

Togo

as Tonga

Miles Malleson

as Thaddeus Sholto