Pattern never changes. She finds lonely, anonymous, almost invisible women doing menial jobs, becomes their friend and confidante and then kills them and takes their identity, their job and their apartment. Police investigator Judith Corel serves as bait in an attempt to trap the chameleon killer.
Raymonde Chandebise suspects her husband Victor-Emmanuel of cheating on her. Her best friend advises her to find out for sure and to use a stratagem. Both of them send him a false letter, written by a beautiful stranger, giving him an appointment at the "Minet Galant"! But they are completely unaware that the hotel's waiter, a simpleton, is a look-alike of poor Victor-Emmanuel!
Hippolyte, the titular oddball, is a far from typical country lawyer. He has been happily married to the woman of his dreams for 15 years, but has an incurable penchant for practical (or rather impractical) jokes.
A drunken, self-destructive woman called Betty wanders into a Parisian bar where she meets middle-aged alcoholic Laure. Laure decides to take care of Betty. Recovering in a hotel room, Betty begins to recount to Laure the story of her bourgeois life and her unhappy and unfaithful marriage.
An ambitious teaching student's finals studies are interrupted by a passionate affair with a jazz musician.
It was during one of his missions in Norway that Antoine learned of his wife's death. He leaves his experimental submarine and returns to Paris. Helene was found in the Seine and had taken barbiturates. Even though he had not been with Hélène for six years, he knew her well enough to believe that she was incapable of committing suicide. So who and why?
Loïc, a chestnut seller, has a mistress who wants a baby. Not daring to admit to her that he had the mumps late in life, he finds other excuses. Until the day he meets Claire, an old girlfriend, who has a little boy. Loïc finds the resemblance between the little boy and himself enormous and is convinced that he is his father...
Fred, a raffish safe blower, takes refuge in the Paris Metro after being chased by the henchmen of a shady businessman from whom he has just stolen some documents. While hiding out in the back rooms and conduits of the Metro, Fred encounters a subterranean society of eccentric characters and petty criminals.