Sherlock Holmes
Dr. Watson
Gabrielle Valladon (as Genevieve Page)
Mycroft Holmes
Madame Petrova
Rogozhin
Mrs. Hudson
Queen Victoria
Gravedigger
Woman in Wheelchair
Von Tirpitz
Cabby
Guide
First Carter
Second Carter
Hotel Manager
Baggageman
Porter
Monk
Lieutenant Commander (uncredited)
Wiggins (uncredited)
Submarine Crewman (uncredited)
Male Dancer trying to seduce Watson (uncredited)
Minister (uncredited)
Inspector Lestrade (uncredited)
Madame (uncredited)
Girl (uncredited)
Scientist (uncredited)
Petrova's Maid (uncredited)
Cassidy (uncredited)
Gravedigger #2 (uncredited)
Danseur Nobel (uncredited)
Equerry (uncredited)
Secretary (uncredited)
Old Man (uncredited)
Lady-in-Waiting (uncredited)
McKellar (uncredited)
Orchestra Conductor (uncredited)
Twin (uncredited)