Sherlock Holmes
Dr. John Watson
Inspector Lestrade
Naomi Drake
Giles Conover
Amos Hodder
Francis Digby, curator
James Goodram, courier
Museum Guard Bates
Mrs. Hudson
The Hoxton Creeper
George Gelder (uncredited)
Constable With Food Tray (uncredited)
Customs Officer (uncredited)
Chauffeur (uncredited)
Maj. Harker's Housekeeper (uncredited)
