When the Germans march into Prague, armor-plating inventor Dr. Bomasch flees to England. His daughter, Anna, escapes arrest to join him, but the Gestapo manage to kidnap them both and take them back to Berlin. As war looms, British secret service agent Gus Bennet follows, disguised as a senior German army officer. His ploy is the not unpleasant one of pretending to woo Anna to the German cause. Cast: - Margaret Lockwood as Anna Bomasch - Rex Harrison as Dickie Randall / Gus Bennett - Paul von Henreid as Karl Marsen - Basil Radford as Charters - Naunton Wayne as Caldicott - James Harcourt as Axel Bomasch - Felix Aylmer as Dr. John Fredericks - Wyndham Goldie as Charles Dryton - Roland Culver as Roberts - Eliot Makeham as Schwab - Raymond Huntley as Kampenfeldt - Austin Trevor as Capt. Prada - Kenneth Kent as Controller - C.V. France as Admiral Hassinger - Frederick Valk as German Officer at Munich Station Runtime: 95 minutes.