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)