Sherlock Holmes
Dr. John H. Watson
Adrea Spedding
Insp. Lestrade
Norman Locke
Radlik
Adam Gilflower
Mrs. Hudson
Larry (uncredited)
Artie - Shooting Gallery Attendant (uncredited)
Fred Garvin (uncredited)
Fortune Teller (uncredited)
Obongo - Pygmy (uncredited)
Charwoman (uncredited)
News Vendor (uncredited)
Carnival Patron (uncredited)
Toy Doll Attendant (uncredited)
Susan (uncredited)
Radio Announcer (uncredited)
Casino Patron (uncredited)
Robert (uncredited)
