An unemployed American showgirl poses as Hungarian royalty to infiltrate Parisian high society.

An artist returning from years abroad takes the identity of his dead valet and gets married, but then there are complications.

A vivacious actress needing work becomes a housekeeper for a crusty retired politician, and gives his life the shaking-up that it needs.

A 65-year-old printer hatches an elaborate scheme to avoid forced retirement.

A woman and a man vying for a woman's affection: the usual love trio? Not quite so since the belle in question is Lorraine de Grissac, a very wealthy and alluring society woman, while one of the two rivals is none other than Arsène Lupin, the notorious jewel thief everybody thought dead, now living under the assumed name of René Farrand. As for the other suitor he is an American, a former F.B.I. sleuth turned private eye by the name of Steve Emerson. Steve not only suspects Farrand of being Lupin but when someone attempts to steal a precious emerald necklace from Lorraine's uncle, Count de Brissac, he is persuaded Lupin is the culprit. Is Emerson right or wrong? Which of the two men will win over Lorraine's heart?

Englishman Mr. Howard is on a fishing holiday in eastern France when the Germans invade in 1940. Setting off to try and get back home he is persuaded to take along the two Cavanaugh children, and as his journey progresses his family keeps growing in size. Once in German-occupied northern France a new problem arises — the risk of being heard speaking English.