as Prof. Leverrin
as Art Dealer
as Bearded Delegate (uncredited)
as Stefan
as Klacken
as Mr. Wheeler
as Xenobian
as The Count
as Kalador (uncredited)
as Trubiev
as Vinson - Spy Henchman
as Lebrun
as Vachek
as Prof. Eugene Dubois (uncredited)
as Italian Passenger (uncredited)
