as Willi Hilfe
as John Maitland
as Professor Jan Stefánik
as Paul Carrell
as Dr. Ritter von Stolb
as Baron Max von Alvenstor
as Oberleutnant Theo Kaiser
as Jules Verne
as German Major
as Hauptmann Von Mueller
as Dr. Lorenz
as Paul Schmidt
as Josef Rainer
as Prince Semyon
as Lt. Dirk Van Daal
