That Day

On the expansive estate, Livia leads a sheltered life marked by childish behavior and vivid, delusional visions she documents in notebooks. She shares these visions with strangers, blurring the line between imagination and reality. Her wealth and status make her an object of family interest and speculation.

Seeing opportunity in Livia's wealth, the family schemes to have her die so they can claim the inheritance. They search for a killer who can discreetly remove the obstacle. Their plan hinges on a dangerous, sociopathic agent who can carry out the deed without arousing suspicion.

Harald arranges for the release of a violent mental patient named Pointpoirot and instructs him to kill Livia. Pointpoirot's sociopathic demeanor makes him a feared choice for the task. He is released with the explicit mandate to eliminate Livia and secure the family's inheritance.

Pointpoirot arrives at the estate, catching Livia's attention with his enigmatic demeanor and a peculiar ritual of mirrorless switchblade shaving. Livia finds him oddly charming and invites him inside, drawn by his quiet politeness. The encounter sets the stage for the looming nightmare as trust slowly blossoms into danger.

Pointpoirot launches a violent attack, and Livia fights back, striking him with a hammer to knock him unconscious. In the ensuing chaos, she accidentally kills one of her relatives with the same weapon. The grim incident marks the first fatal consequence of the family's plot.

After the incident, Livia roams the estate in a daze, unaware of the murder she committed. Pointpoirot awakens and becomes intrigued by her behavior, deciding to aid her and pursue further killings. Together they drift into a dangerous partnership as the body count rises.

With Livia as his unwitting partner, Pointpoirot begins murdering additional relatives who arrive at the estate. He and Livia bond, sharing moments of companionship—singing, playing piano, and quiet conversations—while the killings continue. The massacre unfolds under a chilling double life, as affection masks brutality.

Law enforcement lingers but takes no decisive action, effectively allowing the disappearances and killings to continue unchecked. The inspector and police officer seem oblivious to the escalating pattern, slow to connect it to Livia or Pointpoirot. Their inaction turns the estate into a stage where catastrophe unfolds unimpeded.

As deaths mount, it becomes clear that Livia is unaware the victims are dead, even going so far as to prepare her relatives' bodies for supper. The macabre meals reveal the depth of her detachment from reality. The sense of normalcy persists for Livia even as the bodies accumulate.

Realizing the danger closing in, Pointpoirot escapes the estate, professing his love for Livia as he makes his getaway. The escape ends the immediate threat of capture and shifts the balance of danger to those left behind. Livia is left alone with the truth she cannot confront.

Harald arrives at the estate and is horrified by the carnage and Livia's apparent innocence. He contemplates killing Livia to end the madness but realizes he cannot justify it and instead ends his own life. His suicide closes a private tragedy that the world remains blissfully unaware of.

In the epilogue, schoolchildren march in line to class as military trucks roll through the countryside. A radio voice overlays the scene, describing the massacre at the estate and hinting at a larger conflict. The wider world remains oblivious to the tragedy at the estate while it becomes a grim memory within the family.