as Flower Seller
as Prof. Leon Dushenko
as Professor Franz Menzel
as Joseph
as Manager of Teatro La Fenice
as Pieter Sluys
as Vittorio Miranda
as Otto
as Prof. Pal Kudnic
as Dr. Murton
as Winkler
as Old Man on Train (uncredited)
as Lhama
as Karl Kopek
as Prof. Ludwig Weiss
as Scientist (uncredited)
as Prof. Gollner
as Dirk Brak
as Papa Moreau
as President of the Medical Society (uncredited)
as Duval
