Léa Mysius’ third feature “The Birthday Party” traps NGO worker Nora and her family in a farmhouse nightmare, but the film’s tension often runs ahead of its originality. Monica Bellucci delivers standout work as Nora’s past resurfaces—yet the story’s twists fe
A hen rots on the table. A flat tire stalls the ride. A piñata pops like gunfire. On the remote farmhouse where Nora tries to pull her life back into focus, even the door closing on its own sounds like a warning.
In Léa Mysius’ “The Birthday Party. ” her third feature after “Ava” and “The Five Devils. ” unease arrives early and keeps tightening. It’s beautifully staged, obsessively detailed, and directed with a sense of menace that never stops paying attention. But the momentum comes with a trade-off: once the story locks into place. the emotional beats and so-called twists start to feel narrow—especially for viewers who have already watched a home-invasion thriller take this route.
The film adapts a popular French novel by Laurent Mauvignier and follows NGO worker Nora (Hafsia Herzi). Her surprise birthday party for her husband turns into a confrontation with “ghouls and goons from the past” when strangers arrive at the farmhouse. The cast holds the center of gravity. and Monica Bellucci’s work as Cristina—lonely. melancholy. and quietly dangerous—stands out as the role that carries the film’s most lasting punch.
Cristina is not just a late-arriving threat; she’s tied to the film’s emotional core. Bellucci plays an artist living on the farm whose connection to Nora’s past is the key the plot keeps turning. On paper. the setup is already loaded: Nora is up for a promotion at her job as an executive tasked with revitalizing rural France’s image as a place people should want to live. She lives with her husband. the stealthily alcoholic Thomas (Bastien Bouillon). and their small daughter. Ida (Tawba El Gharchi). on an isolated farm left to Thomas by his family.
Thomas wants the party. He’s also borrowing funds that seem to be growing into an alarming hidden debt. The tension between the couple isn’t subtle—Nora is disinterested in sex with him, and Thomas fixates on a tattoo of a rose on her sleeping body that seems to hint at some secret past life.
Then there’s the internet-sized spark that turns into a fuse. Before the party. Nora is disproportionately upset about a social media video Ida posted—one that shows Nora. Thomas. and their child dancing on the farm and has gone viral. The film asks what Nora is hiding, and it doesn’t let the audience wait long.
On the day of the planned birthday party, Cristina (again, Bellucci) is accosted by a fleet of strangers: Franck (Benoit Magimel), Flo (Paul Hamy), and Begue (Alane Delhaye). Their styling leans into the clichés of gangsters or loan sharks, but the reasons they’re there are worse than money.
When Ida comes home from school, she finds the concrete slab of a guest house occupied by Cristina—someone she’s especially close with. The place is empty in one critical way: Cristina’s dog is missing.
What starts as a sudden confrontation becomes a claustrophobic. feature-length trap as the trio of men ensnares everyone in the family. Tables and allegiances shift under pressure. Thomas assumes the intruders are potential thugs he owes money to. while Nora feigns not to recognize at least one of them—Franck—from a prior life. Franck tells Thomas he’s fresh out of prison, tightening the sense that the past has been released on schedule.
Cristina is confined to her home under Begue’s watch. but Bellucci’s performance turns that constraint into a slow-motion weapon. She manipulates him into revealing vulnerable details about himself. and at one point—over a joint and some music—she waits until she can get her hands on a box cutter. When she finally acts. everyone’s attention has been scattered elsewhere. including over the fact that Nora’s co-workers were invited to the bash.
The film’s strongest scenes hinge on Cristina’s disarmament of her captor. Cristina reveals she has a son in the United States who hates her. the nature of her relationship to Thomas and the farm. and how “artists are often bad parents.” The film ties that regret to a life now reduced to painting inky-black melancholy canvases that take up half the space of her home.
After that, “The Birthday Party” leans into familiar territory. The rest of the birthday gathering—potential family annihilation included—plays out with the same frustrations people feel when they recognize a home-invasion thriller’s complicit characters and impassive reactions to emotional torture. Mysius is still a rigorously attentive filmmaker, obsessed with the small details that make thriller frames feel alive. But she’s working with material that doesn’t always match the precision of the craftsmanship.
Cinematographer Paul Guilhaume drains the image in dark blues and grainy blacks, echoing Cristina’s canvases and reinforcing the film’s unease with real visual gravity. The production values are thrilling on their own terms, even when the story’s momentum starts to feel by-the-numbers.
As the film advances into its third act, it continues toward twists that are announced but feel grindingly inevitable. The weight of Nora’s past—an entirely other life she kept from her husband and daughter—presses on the narrative right up until the end. By then, the movie veers into terror but lands closer to a shrug than a wow.
Still, the goods are there. Mysius is exacting and exhilarating, and “The Birthday Party” becomes a riveting watch even if you can feel where it’s going.
Grade: B-
“The Birthday Party” premiered at the 2026 Cannes Film Festival. It is currently seeking U.S. distribution.
Léa Mysius The Birthday Party Monica Bellucci Hafsia Herzi Bastien Bouillon Tawba El Gharchi Cannes Film Festival 2026 Laurent Mauvignier thriller review French thriller home invasion