Joseph Fürst

as Professeur Docteur Metz

as Avidan

as Lazar Straulle

as Paul Varna

as Local Police Sergeant

as Capt. Hanselman

as Georgiu

as Herr Jacob Koertner

as Karl Schiller

as Zaroff

as Schneider

as German Brasshat

as Zaroff

as Karel Jorovitch

as Kane Luker

as Carlo Lenzi

as Prof. Brodzinski

as Yelker

as Judge

as Chislenkan

as Dr. Rudolf Mueller

as Gen. Fritz Fromm

as President Obotnik (uncredited)