...et mourir de désir (1974)

The wife of an American doctor suddenly vanishes in Paris. To find her, he navigates a puzzling web of language, locale, laissez-faire cops, triplicate-form filling bureaucrats and a defiant, mysterious waif who knows more than she tells.

An acclaimed novelist struggles to write an analysis of love in one of three stories, each set in a different city, that detail the beginning, middle and end of a relationship.

Overwhelmed by her suffocating schedule, touring European princess Ann takes off for a night while in Rome. When a sedative she took from her doctor kicks in, however, she falls asleep on a park bench and is found by an American reporter, Joe Bradley, who takes her back to his apartment for safety. At work the next morning, Joe finds out Ann's regal identity and bets his editor he can get exclusive interview with her, but romance soon gets in the way.

American tourist Frank meets mysterious British woman Elise on the train to Venice. Romance seems to bud, but there's more to her than meets the eye.

Mutual attraction leads two married couples to swap bedtime partners.

Nancy Stokes, a retired schoolteacher, is pretty sure she has never had good sex. Now that her husband has died, she is determined to take a tour of sexual vistas that until now she has only imagined. She even has a plan; it involves an anonymous hotel room, and a sex worker who calls himself Leo Grande.

The third in a series of films featuring François Truffaut's alter-ego, Antoine Doinel, the story resumes with Antoine being discharged from military service. His sweetheart Christine's father lands Antoine a job as a security guard, which he promptly loses. Stumbling into a position assisting a private detective, Antoine falls for his employers' seductive wife, Fabienne, and finds that he must choose between the older woman and Christine.

Nelie escaped a miserable existence by becoming a frontline nurse in 1914. One day, she takes the identity of Rose, a young woman from a good family, who dies in front of her. She presents herself in her place at Madame de Lengwil's house, to become the reader of this wealthy woman.

Trapped in their New York brownstone's panic room, a hidden chamber built as a sanctuary in the event of break-ins, newly divorced Meg Altman and her young daughter Sarah play a deadly game of cat-and-mouse with three intruders - Burnham, Raoul and Junior - during a brutal home invasion. But the room itself is the focal point because what the intruders really want is inside it.

A rich man's daughter is held captive in an abandoned apartment by two former convicts who abducted her and hold her ransom in exchange for her father's money.