as Geneva Man
as Dr. Franken
as Dr. Klauber
as Mr. Sandor
as German Businessman (uncredited)
as Otto Kuhn
as Dr. Brenner
as Hotel Barkeeper (uncredited)
as Klaus
as Stage Director
as Mr. Hauen
as Jan Dorchik
as Professor Kent
as Dr. Adolph Behrens
as Dr. Zinker
as Herr Barthel
as Regisseur
as Zar
