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
CinemaSerf
When a peg-legged prisoner (Graham Soutten) reveals a secret in return for his escape and is then betrayed, he bides his time before escaping and setting about claiming the treasure for himself. He has been away for such a long time that some of the valuables have rather bloodily changed hands and o...