Synopsis/Details
The screenplay opens in a television studio where Dr. Robert Hendricks, a psychology professor, debates two secular intellectuals — Dr. Lena Voss and Marcus Bell — over a provocative atheist bus campaign reading "There probably is no God. So stop worrying and enjoy your life." Robert argues passionately that morality requires a divine foundation, that secularism borrows from the religious tradition it mocks, and that removing God from the equation leads to civilizational collapse. When Lena and Marcus challenge him to produce empirical evidence for God's existence, Robert leans forward with chilling certainty: "Fine. Let's make you believe."
A title card reads TEN YEARS LATER. Robert, now in his fifties, drives his family to 112 Ocean Avenue — the infamous Amityville house — on Christmas Eve. His wife Mary is tense and reluctant. Their daughter Sarah, sixteen, is openly hostile about the move, seeing it for exactly what it is: her father using his family as instruments in a spiritual experiment designed to salvage his public career. Their son Michael, fifteen, watches his father from the backseat with quiet, surgical attention, comparing the real Robert to a paused video of his younger debate performance and finding that the man has not changed at all — he has only aged into his own rhetoric. Two toddlers, Noah and Lily, ride along as innocent passengers in a journey none of them chose.
Sarah's voiceover introduces the screenplay's emotional spine. She recalls a time when Christmas felt protective, when lights and pine needles and extension cords seemed to seal the house against the dark. She no longer believes that. Now she understands that Christmas does not keep the darkness out — it just teaches you how much darkness fits around the lights.
The family enters the house, and Robert immediately begins setting up camera equipment, a ring light, and OBS streaming software. His laptop reveals a chart comparing Amityville to other hauntings — the house scores highest not under "evidence" but under "reach." He closes the tab before it appears on camera and begins recording a monologue about bringing his family to the most famous haunted location on earth, framing it as a brave act of faith when it is transparently an act of brand management. He chose this house not because the supernatural evidence is strongest here, but because the audience is largest.
Michael and Sarah smoke weed together in Michael's room while watching one of Robert's old lectures. Their dynamic is immediately intimate and conspiratorial — they are two survivors of the same wreckage, bonded by shared damage. Their closeness carries an undertone that the screenplay treats with uncomfortable honesty: they lean into each other, their legs touch, their fingers brush. The boundary between sibling solidarity and something darker has been eroded by years of their father's experiments, which systematically dismantled the normal developmental scaffolding that children use to understand bodies, boundaries, and intimacy.
This backstory unfolds through carefully placed flashbacks. When Sarah was nine and Michael was eight, Robert filmed them playing with dolls — undressing them, pressing them together, imitating adult behavior — while he sat calmly behind a camcorder, taking notes. He published the footage as academic research on "conscious agency." A later flashback reveals something far worse: a clinical trial labeled STIMULUS CONDITION B / SIBLING SET TRIAL #6, in which six-year-old Michael was strapped to a chair with electrodes while Robert exposed him to images of screaming children, dead animals, and burning churches. Young Sarah was instructed to "comfort" Michael by placing her hand on his thigh while singing "Silent Night" in a flat, dead voice. Robert recorded everything, published it, and won awards.
On the first night, the house begins to respond. The toddlers' room is violently transformed: crayon drawings of children burning, crude sacrifices, and a skeletal god with a gaping mouth cover the walls. Flies swarm. The smell is unbearable. Robert identifies the figure as Mot, the Canaanite god of death, and his reaction is not horror but excitement — the house is giving him content. Michael, who has ventured into the basement and been overtaken by a dark presence that sinks into his skin like ink, watches the aftermath with a deepening smile. The possession has begun, though the screenplay leaves open the question of how much of what follows is supernatural invasion and how much is the natural endpoint of everything Robert built.
Mary, desperate and terrified, confides in Pastor David at Christmas morning church. She admits she looked away while Robert turned their children into research subjects, that she allowed it because she was afraid of losing him, afraid of being wrong. Pastor David is the screenplay's moral center — warm, lonely, principled, and genuinely faithful in ways Robert can only perform. His sermon on the Israelites entering Canaan serves as a direct rebuke to Robert's enterprise: fear dressed as faith is still fear, and making children carry the weight of adult certainty is a sin regardless of what theology you wrap it in.
While the family attends church, Michael stays behind and discovers Robert's financial records: wire transfers totaling over two million dollars from organizations called HARMONY PUBLIC TRUST LLC and URBAN HARMONY CONSORTIUM, an NDA, a media one-sheet with a go-live date of December 24, and documentation of an "in-home trial." The Amityville move is not a spiritual quest — it is a funded, contracted media event. Michael also records a devastating parody of his father's public persona and uploads it. Robert receives a text during the sermon: "Your son just crucified you."
The confrontation between Michael and Robert that follows is the screenplay's intellectual centerpiece. Michael pins his father with one question — "Do you believe in God?" — and Robert cannot answer it. He deflects into "moral structure" and "transcendent order" and "it depends on what you mean by God," revealing what his son and his critics have always suspected: Robert does not believe in God. He believes in the utility of belief. He has built an empire on implying a position he has never actually taken, feeding an audience of frightened people who wanted someone intelligent to tell them their fear was holy. Michael sees through all of it, and when he tells his father "You're really quite nothing," the line lands like a killing blow because it is true.
The possession accelerates. Michael and Sarah's relationship crosses into sexual territory, driven by a combination of demonic influence and the collapse of every boundary their father was supposed to protect. Their encounter is staged as a ritual inversion — Sarah blasphemes while Michael takes her, Canaanite figures watching from the shadows — but the horror is not the supernatural elements. The horror is that these children were groomed into this trajectory by their father's experiments years before any demon entered the picture. The house did not create the damage. It exploited what was already there.
Christmas dinner disintegrates when the turkey reanimates and attacks Robert — a moment of grotesque dark comedy that punctuates the mounting dread. Mary finally breaks. She books flights, packs bags, and tells Robert she is taking the children. Robert's response reveals the totalitarian core beneath his intellectual veneer: he grabs her wrist, tells her she cannot leave, and delivers a rant about sacrifice, structure, and the holy feminine fleeing the temple when the blood starts to mean something.
Robert retreats to his study and experiences a hallucinatory return to the television studio, where every person in his life confronts him in succession. Lena, Marcus, Mary, Michael, Sarah, and Pastor David each deliver the accusation he has spent a decade evading. Pastor David's is the most devastating: "A fisherman understood it. A tax collector understood it. A thief on a cross understood it with nails in his hands. But somehow it's too complex for the man with a doctorate and a podcast." When Robert finally erupts, his confession is raw and volcanic — he admits he used his family, he admits he hates the secular world, and he admits that everything he did was driven not by faith but by fury and terror. The vision ends. He is alone in his study with a camera, filming a dark corner, whispering "I see you now."
Michael strangles Robert with a string of Christmas lights. He poses the body crucified against the living room wall, bound in blinking red and green. He kills the toddlers. He murders Sarah with a fire poker, caving in her face while she tells him she loved him. He rapes Mary. He kills Pastor David with a single snap of his neck when the pastor arrives to help. The violence is total, methodical, and performed with the same clinical detachment Robert once brought to his experiments. When the police arrive, Michael sits shirtless and blood-soaked on the bed, smiling. In the interrogation room, he describes what he did with gleeful precision. In his holding cell, he sings "I'll Be Home for Christmas."
The final image is the house, standing in pale winter light, a SOLD sticker pressed onto the For Sale sign. Sarah's voiceover delivers the epitaph: "Dad spent years telling the world that morality collapses without God. Then he dragged his own children into hell to prove it. In the end, the only thing that collapsed was our family. Merry Christmas."
