Lemmon plays Sam Bissell, a hard-working San Francisco advertising executive, with two young daughters and a loving wife, Min. An extremely important client, Simon Nurdlinger, is considering taking his business elsewhere when he believes there are no "family men" working at Sam's company. Sam's boss, Mr. Burke, introduces the client to Sam. The client is delighted by Sam and agrees to do business with him and the company. Sam feels his career is now on the way up and he goes home to celebrate with his wife. There, he meets his wife's longtime friend and their new next-door neighbor, Janet, and they all have dinner together to celebrate his promotion and Janet's new home. Sam gets drunk and tumbles down the grand carpeted staircase of the Fairmont Hotel, knocking down a waiter carrying trays of meals. Janet, a beautiful woman, is recently divorced from her husband Howard and is happier than ever. She has also come into a large inheritance from her grandfather, which carries the stipulation that she must still be married to Howard in order to receive the inheritance. State law dictates that a divorce is not final until a year from final settlement. Since only six months have passed, Janet decides to hide the divorce from her cousins Irene and Jack who stand to inherit if Janet is disqualified. With Howard unavailable, Sam is pressed to impersonate him when Irene and Jack arrive for a visit. Having never met Howard, Irene and Jack seem convinced but begin watching the couple with a telescopic surveillance camera hidden in a phony workmen's truck nearby. Janet and Sam are thereby forced to continue the charade for several days, with Sam cohabiting and being driven to work by Janet, and sneaking in to occasionally visit Min through the back yard, or hidden in a laundry basket. When caught pretending by Mr. Burke and Mr. Nurdlinger, Sam and Janet are then forced into a double charade in which Janet pretends to be Min. The situation begins to unravel when Irene and Jack hire a private investigator to keep watch on Sam and Janet, and Howard re-enters the picture. Sam panics after noticing new advertising billboards around the city showing his face with Janet's, and so paints clown faces on them late the last night before the attorney is to give Howard and Janet their inheritance.
Bess Flowers as Mrs. Burke. This was her last film.
Production
The film, set in San Francisco, makes use of obligatory exterior shots, including a long montage of scenes of Sam driving his car all over the city, up and down hills, as well as the curvy block of Lombard Street, as so many directors love to portray. The remainder of the film was shot in the Los Angeles area, both on location and at the studio.
Reception
The film grossed $9,072,726 at the box office, earning $5.3 million in rentals.
