Dr. Josef Mengele
Ezra Lieberman
Eduard Seibert
Esther Lieberman
Frieda Maloney
Barry Kohler (as Steven Guttenberg)
Sidney Beynon
Mrs. Doring
Henry Wheelock
David Bennett
Mrs. Curry
Jack Curry / Simon Harrington / Erich Doring / Bobby Wheelock
Professor Bruckner
Mundt
Strasser
Lofquist
Mr. Harrington
Fassler
Dietrich Hessen (as Guy Dumont)
Trausteiner
Nancy
Doring
Gunther
Farnbach
Mrs. Harrington
Ismael
Wolfgang Kleist (as Jurgen Anderson)
Stroop
Schmidt
Gertrud
Arno Schwimmer
Berthe
Blonde woman (uncredited)
German Newspaper Boy (uncredited)
German Officer at Party (uncredited)