Early one morning, a 12-year-old choirboy witnesses a murder and then flees the scene. The police can't find any evidence and only Inspector Maigret takes the boy seriously. But why do parts of his story not check out?
Maigret investigates the murder of a successful wine merchant – a man who routinely humiliated his employees and slept with their wives. As he gathers evidence, Maigret wonders if there was anyone who didn't want to kill the man.
Returning from a conference, Maigret visits his old friend Chabot, a judge in a small town which has been rocked by two murders. A third murder soon follows, and Maigret's R&R turns into an investigation.
Why would Professor Jean Duclos, a criminologist and lecturer of international renown, murder somebody? Ari, a young Finnish policeman, turns to his friend and mentor Inspector Maigret for help.
What begins as a routine trip to his hometown of Saint-Fiacre turns into work, as Inspector Maigret arrives just in time to witness a murder. Childhood memories return to haunt him as he investigates.
An eminent man on the cusp of reuniting with a long-time love turns up dead, with no motives, no enemies, and no forced entry. To investigate, Inspector Maigret must make an excursion into the rarified world of the aristocracy.
Two bargemen pull a gravely wounded vagrant out of the Seine River. One of the men states that he noticed a red Peugeot on the quay shortly before the accident. Maigret tracks down the car only to find that the two occupants are innocent.
Maigret follows a man who jumps off a train, only to end up in the hospital with a sprained ankle. The next day he discovers that a madman has been plaguing the town.
All of Paris is afraid. Five murders have been committed at night in the same neighborhood. There were no witnesses to the crimes, nor any links between the victims.
A man is stabbed to death with a hat pin in a first-class train car near the Franco-Belgian border. Novice inspector Paul Lachenal gets called in to investigate and goes to his Uncle Maigret for assistance.
Maigret's long-lost school chum bumps into him in the street and asks for help. His mistress has just been murdered in her own apartment. The man was there at the time and claims he saw nothing.
On vacation in the south of France, Maigret is faced with the sudden appearance of a dead body and the disappearance of a wealthy art dealer. Who is Mr. Owen, and why are so many of the hotel guests behaving so strangely?
Assuming the identity of a salesman, Maigret goes undercover and gets a room in a boarding house so he can observe a woman who's living there with her children. She's a pharmacist's wife on the run, who claims her missing husband is a killer.