Episode

The Sign of Four: Sherlock Holmes' Greatest Case

Cast
Arthur Wontner as Sherlock Holmes
Ian Hunter as Dr. John H. Watson
Clare Greet as Mrs. Hudson
Gilbert Davis as Atherly Jones
Edgar Norfolk as Cpt. Arthur Morstan
Isla Bevan as Mary Morstan
Kynaston Reeves as Bartholomew Sholto
Herbert Lomas as Maj. John Sholto
Miles Malleson as Thaddeus Sholto
Graham Soutten as Jonathan Small
Margaret Yarde as Mrs. Smith
Moore Marriott as Mordecai Smith
Togo as Tonga
Ernest Sefton as Barrett
Charles Farrell as Funfair Patron
Mr. Burnhett as Tattoo Artist
Roy Emerton as Tattooed Man
(cast list not finalised)