Constance Bennett
Frances Hawtree / Z-1
Erich von Stroheim
Valdar / Schiller / Blecher
Anthony Bushell
Capt. Arthur Chamberlain
William Courtenay
Mr. Yates
Crauford Kent
General Hewlett
Charlotte Walker
Lady Catherine Chamberlain
William Holden
Sir Winston Chamberlain
Paul Panzer
'Kirsch' the Decoy (uncredited)
Wilhelm von Brincken
Capt. Kugler (uncredited)
Ullrich Haupt
German Colonel (uncredited)