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