American couple Janet and Mike move to England for his business. She soon becomes paranoid that he is having an affair with his attractive secretary, and decides to get back at him by pretending she herself has been unfaithful.
Jane Osgood runs a lobster business, which supports her two young children. Railroad staff inattention ruins her shipment, so with her lawyer George, Jane sues Harry Foster Malone, director of the line and the "meanest man in the world".
In London, the American housewife Kit Preston (Doris Day) has been married for three months with the British executive Anthony Preston (Sir Rex Harrison). In a foggy day, while walking in a park, Kit is threatened by a voice that tells that she will be murdered soon. On the next day, Kit receives a phone call from the stalker threatening her death in the next month and she goes with Tony to the Scotland Yard, but Inspector Byrnes (John Williams) believes that Kit may be making-up the story to get more attention from Tony. Kit's Aunt Bea (Myrna Loy) arrives, but only Kit receives the phone call raising the question, is she losing her mind?Written by
Claudio Carvalho, Rio de Janeiro, Brazil