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This British "quota quickie" benefits from the presence of the delightful musical comedy star Evelyn Laye. But there is nothing either musical or comical about the plotline, which concerns the efforts by a foreign spy to steal valuable war plans and place the blame on the hero -- just so that the bad guy can win the hand of the heroine. The hero manages to deliver the plans to the girl by transcribing them on the back of a photograph. The enemy agents capture the girl, whereupon the entire British Navy comes to the rescue. Anticipating Hitchcock's Notorious by nearly twenty years, the film's most interesting wrinkle is that the head of the spies is the villain's mother!