Last Known Address

Last Known Address

Year: 1970

Runtime: 102 mins

Language: French

Director: José Giovanni

ThrillerCrime

Officer Marceau Léonetti, diligent and energetic, randomly pulls over the son of a powerful lawyer for drunk driving. Months later the lawyer slanders Léonetti, branding him violent and incompetent, prompting his transfer to a modest precinct. There he meets the attractive Jeanne, and together they confront a demanding investigation.

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Last Known Address (1970) – Full Plot Summary & Ending Explained

Read the complete plot breakdown of Last Known Address (1970), including all key story events, major twists, and the ending explained in detail. Discover what really happened—and what it all means.

Marceau Léonetti is a capable and energetic police officer who, by a stroke of fate, stops the son of a powerful lawyer who is driving drunk. The incident barely scratches the surface of the tensions to come: a few months later the same lawyer accuses Léonetti of being violent and incompetent, a reckless political move that forces him to transfer to a small, low-profile police station. There, his most notable achievement seems almost comically modest—a case involving a young boy’s missing pigeons—yet this humbling chapter sets the stage for what’s to follow.

Jeanne Dumas enters Léonetti’s orbit when an old colleague, now head of a special crime unit, recruits him into a tougher, higher-stakes division. The partnership is electric from the start: a young and determined officer partnering with a seasoned veteran, both drawn into a mission that will test their nerve and judgment. The unit’s first assignment is stark and provocative: they are to hunt down men who sexually harass young women in cinema theatres, using Jeanne as bait in a sting operation. The tension is palpable, the danger real, and the social moral questions baggage they must carry as they work to protect vulnerable victims.

The case grows more urgent as a new directive lands: locate and arrest Roger Martin, the sole witness who can testify against the notorious master criminal Soramon in a murder trial. With the prosecution’s other witness dead, Martin’s testimony is essential to bring Soramon to justice, yet Martin has vanished. The police only have an old address—Cité de la Glaciére—and a faint trail that involves tracing Martin’s past life, even down to his former furniture purchases, in hopes of drawing him out of hiding.

As the investigation deepens, Léonetti and Jeanne uncover a troubling possibility: Martin may have a young daughter. A clue surfaces in the form of blue pills—a prescription that could connect Martin to a family, and to someone who might still be looking for him. A neighbour corroborates the existence of the daughter, adding weight to their theory and widening the circle of people who could help—or hinder—their search. Hope flickers, but the hunt hits a wall again as countless leads lead nowhere.

With time running out before Soramon’s trial, Léonetti abandons the street-level hunches for the cold logic of records: pharmacy prescriptions could reveal the girl’s whereabouts. A meticulous, long-winded search finally pays off on the first day of the trial, when they locate a vital prescription that points to Martin’s doctor. The breakthrough is dangerous and risky: the address delivers them to a doctor’s office instead of a direct home, and the investigation splinters into private, high-stakes police action.

The plan becomes a race against the clock. Léonetti and Jeanne split up following a lead from the doctor, but the moment is brutal: Léonetti is attacked by the criminal gang, beaten badly, and left in the street. The gang assumes they’ve stolen the crucial address, but Léonetti has cunningly given Jeanne the real lead. Jeanne nurses him back to health, sharpening the dynamics of trust and dependence between them.

At the doctor’s, the situation grows more complicated. They learn that the doctor only has Martin’s old address on file, yet he also confirms that Martin and his daughter have an appointment that day. In a tense confrontation outside the surgery, Léonetti manages to bring Martin into police custody and escorts him to a hotel under protection. Martin testifies the next day, but the fragile safety is shattered when, after giving his evidence, he is left unguarded and is assassinated in a park in full view of his daughter by one of Soramon’s gang members.

The case leaves an emotional wound on Jeanne. She tells Léonetti that she is completely disillusioned with police work—the system’s failure to protect Martin and his daughter makes the verdict feel hollow. His blunt response to her despair is simple but pointed, and the two part ways with a cold goodbye as Jeanne drives off into an uncertain future.

The film closes on a somber note, framed by a quotation about life and living it fully. The exact line reads:

“…for life is a wasted blessing/ when we have not lived it/as we would have liked”, misattributed to the Romanian poet Mihai Eminescu. (In fact, the lines are from the poem Decebal către popor by another Romanian poet, George Coșbuc.)

This tale weaves together crime, accountability, and the personal costs of upholding the law, painting a portrait of two officers striving for justice in a world where protection and truth sometimes come at a steep price.

Last Updated: October 09, 2025 at 12:35

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