Regina Lampert (Hepburn), a UN translator in Paris, is about to divorce her husband when she discovers that he has been murdered. Her former husband had stolen gold during the war and converted this into cash, which is now missing. She meets Cary Grant (who goes under a number of different aliases), a government agent from the U.S. Embassy (Matthau), and a number of heavies who pursue her as they all assume that she must know where the money is located. The situation becomes tense when people begin turning up dead. This romantic comedy masquerading as an espionage thriller owes a lot to Hitchcock but has a decidedly lighter touch, thanks to director Stanley Donen, who had predominantly worked on musicals such as Singin' in the Rain, and two stylish Hollywood icons at their peak. Hepburn and Grant (who conceals the fact that he's over 60 by showering in one scene fully clothed) simply sparkle on screen.