During World War I, a female agent tries to unmask a German spy.
as Frances Hawtree / Z-1
as Valdar / Schiller / Blecher
as Capt. Arthur Chamberlain
as Mr. Yates
as General Hewlett
as Lady Catherine Chamberlain
as Sir Winston Chamberlain
as 'Kirsch' the Decoy (uncredited)
as Capt. Kugler (uncredited)
as German Colonel (uncredited)
