A young woman turns to Holmes for protection when she's menaced by an escaped killer seeking missing treasure. However, when the woman is kidnapped, Holmes and Watson must penetrate the city's criminal underworld to find her.
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
