George E. Stone
Armand
Frank Reicher
Auctioneer
Osgood Perkins
Martin
Claire Dodd
Julie Verlaine
William Faversham
Monsieur Fos / Professor Racque
Ferdinand Gottschalk
Chief Inspector Marotte
Alphonse Ethier
Commissioner
Clark Williams
Paul De Brunay
Jack La Rue
Lucien Vonaire
DeWitt Jennings
Louis Bardou
Alice White
Didi Bonfee
Helen Ware
Madame Rombiere