Julien Müller, Jerzy Radziwiłowicz, is a middle-aged clockmaker who lives alone with his cat in a spacious house on the outskirts of Paris. He spends his days keeping time and, beneath a quiet exterior, nurturing a tense game of leverage: he is blackmailing Madame X, Anne Brochet, who imports fake antique Chinese silks and may have murdered her sister. By chance, he encounters Marie, Emmanuelle Béart — a radiant young woman he tangled with a year earlier — and the sight of her rekindles a fierce, undeniable attraction. Their reunion quickly blossoms into a passionate relationship, and Marie agrees to move in, even as her presence remains unsettlingly elusive. She carries herself with a strange coolness at times, and there are moments when she seems almost absent, as if something deeper tugs at her from elsewhere. A web of mystery binds Marie to Madame X’s dead sister, and Julien’s growing obsession with uncovering Marie’s secret threatens to pull him away from the life he thought he wanted.
The film’s second act, Julien et Marie, deepens the tension as Marie settles into Julien’s world, trying on the clothes of his past and exploring the rooms he has kept closed. Their lovemaking is intensely sincere, yet Marie’s behavior remains disconcerting: at times she is cold or trance-like, speaks in an unidentified language, and shows a sense of time that drifts away from reality. Julien corrects her “bonjour” to “bonsoir,” a small sign of how he tries to tether her to the ordinary. She fills the attic with a compulsive need to decorate and rearrange, acts out dreams with a precise purpose she cannot fully explain, and reveals a strange absence of physical blood when scratched — a detail she keeps from Julien. She experiences visions of a girl in her dreams who performs a “forbidden sign” with her hands, and she agrees to assist Julien in his blackmail scheme after meeting Madame X, who only knows her as “l’autre personne.” A mysterious hand delivers a letter to Marie, purportedly from Madame X’s sister Adrienne, Bettina Kee; through this letter, Adrienne’s presence begins to haunt Marie, blurring the lines between memory and revenant.
Marie et Julien centers on the letter’s meaning. The missive is from Adrienne to Madame X, and it arrives as a revelation that Marie’s life is tangled with a history the two women share. Julien meets Madame X again, who explains that Adrienne killed herself by drowning six months earlier — or so it seems. The source of the letter remains unclear, and Marie insists that Adrienne’s death is being weaponized to frame her, insisting that Adrienne, even in death, is somehow “reliving” the events that bind Marie to this secret world. Adrienne, who appears as a specter, has told Madame X that Marie is “like me,” a notion that drives Julien to the edge of confusion. Julien’s growing impatience with Marie’s secretive attic rituals reaches a fever pitch, and he presses to understand what the attic room is for. Marie, fragile and ardent, refuses to fully explain, and then vanishes into the night to check into another hotel. Julien rings Marie’s former boss, who directs him to Delphine, a former friend of Marie and Simon. Delphine’s account hints that Marie’s relationship with Simon drove her to the edge of madness, deepening the mystery of what lies behind her radiant exterior.
In the final act, Marie returns to the scene of Marie and Simon’s old life—the letting agent’s room that eerily mirrors the room Marie has prepared in Julien’s attic. It’s there that the truth begins to sharpen into a perilous certainty: Marie’s self-destructive plan has been intertwined with Adrienne’s memory, and Adrienne’s presence continues to haunt the couple. Marie leads Julien downstairs to the attic, where a noose awaits. The two spiral into a dangerous, intimate dance as they grapple with love, memory, and the fear of losing one another. They make love once more, but the emotional pressure mounts. Marie warns Julien that if he continues, he will begin to forget her, while Julien begs for her presence to endure. In a desperate moment, he considers ending his life with a knife, but Marie intervenes, bleeding from her own wound and wrapping him in a fragile, shared tenderness. When Madame X arrives to reclaim her letter, she burns it, lifting Adrienne’s ghost from the room and freeing the living from its grip — or so it seems. Marie, moved to tears, watches Julien drift toward sleep, and when he stirs, he asks who she is. She answers with quiet optimism, insisting that she is “the one he loved,” and tests his trust with a final, hopeful smile: give her a little time.
