Directed by Richard Thorpe | Starring: Joan Crawford, Fred MacMurray, Conrad Veidt, Basil Rathbone

Frances and Richard Myles are newlyweds honeymooning in Europe on the eve of World War II. Unexpectedly, they find themselves commissioned by the British secret service to secure the plans for a new secret weapon masterminded by the Nazis (involving magnetic mines). The trail leads them to Innsbruck where they arouse the suspicions of a Gestapo chief.