In London, August 1914, Austrian star Elsa Duranyi (Gertrude Michael) and English matinee idol Alan Barclay (Herbert Marshall) are in love and plan an immediate marriage. But the War comes and Elsa mysteriously disappears. Alan's ease in speaking German results in his appointment to the British Intelligence and, to aid his use as a spy, they announce he was killed in action. He takes the name and personality of "shell-shocked" Hans Teller, a German prisoner, and is sent into Germany on an exchange of prisoners.
Herbert Marshall
as Alan Barclay
Gertrude Michael
as Elsa Duranyi
Lionel Atwill
as Ludwig
Rod La Rocque
as Carl Schrottle
Guy Bates Post
as Captain Bruce Minton
Frank Reicher
as Colonel Von Diegel
Vallejo Gantner
as Vogel
Torben Meyer
as Kraus
Julia Faye
as Nurse
Egon Brecher
as Schultz
Spencer Charters
as Herr Hoffer
