Léa Mysius has assembled an impressive trio of European talent for The Birthday Party, her latest thriller that transforms what should be a joyful celebration into something far more unsettling. Hafsia Herzi, Benoît Magimel, and Monica Bellucci anchor the film, set in an isolated marshland where a family’s quiet life unravels in the span of a single day.
The premise sounds simple enough: Nora’s birthday party. But Mysius quickly dismantles any sense of comfort, introducing a series of strange disturbances that expose deeper tensions festering beneath the family’s surface. Nora, her husband Thomas, and their daughter Ida find themselves increasingly isolated as mysterious events escalate around them and their only neighbor, Cristina—a role that gives Bellucci the chance to radiate an unsettling presence.
What works best here is the cast. Herzi and Magimel ground the drama with nuanced performances that feel lived-in, while Bellucci’s enigmatic turn adds an effective layer of dread to the proceedings. The film’s visual language is striking too, with Mysius making excellent use of the bleak landscape to heighten the atmosphere of entrapment.
That said, critics have noted the film doesn’t entirely stick the landing. While compelling and often gripping, The Birthday Party struggles with pacing and narrative structure at times, leaving some loose threads and uneven moments that prevent it from becoming the fully realized thriller it aspires to be.
