The famous Borgia Pearl, a valuable gem with a history of bringing murder and misfortune to its owner since the days of the Borgias, is brought to London, thanks in part to Sherlock Holmes. But before long the jewel is stolen, due to an error on Holmes' part, and shortly thereafter, a series of horrible murders begin, the murderer leaving his victims with their spines snapped and surrounded by a mass of smashed china.
as Sherlock Holmes
as Dr. John Watson
as Inspector Lestrade
as Naomi Drake
as Giles Conover
as Amos Hodder
as Francis Digby, curator
as James Goodram, courier
as Museum Guard Bates
as Mrs. Hudson
as The Hoxton Creeper
as George Gelder (uncredited)
as Constable With Food Tray (uncredited)
as Customs Officer (uncredited)
as Chauffeur (uncredited)
as Maj. Harker's Housekeeper (uncredited)
