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