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)