There is an image early in Hereditary that most viewers never shake, and it contains no ghost at all. A grieving mother bends over a doll’s house she has built with obsessive precision, and the camera slowly makes us doubt what we are looking at: are these miniature rooms a hobby, or the trap the family is already living inside? Ari Aster‘s first feature announced a filmmaker who understood that the most frightening thing on screen is not the supernatural, but the family you cannot get out of.

On its surface the film follows the Grahams — the miniaturist Annie, her level-headed husband Steve, their teenage son Peter and their withdrawn young daughter Charlie — in the weeks after the death of Annie’s secretive, estranged mother. What begins as a domestic study of inherited grief curdles, scene by scene, into something far darker, as the family realises the old woman left behind much more than unresolved resentment. Aster withholds the true shape of the threat for a very long time, letting dread pool in ordinary rooms lit by afternoon sun.

What makes the film endure is the control. Aster and cinematographer Pawel Pogorzelski frame the Graham house so that it rhymes with Annie’s miniatures — we are never quite sure whether we are watching people, or dolls being arranged by an unseen hand. Colin Stetson’s score works less like music than like something breathing in the next room, and the film’s most notorious shock — a sudden roadside horror followed by a wordless, unbearable morning after — is staged with a restraint that makes it more devastating, not less. Aster trusts silence, and the dead air of the frame, far more than any jump scare.

At the centre is Toni Collette, giving one of the great horror performances of the century. Her Annie is raw, furious and sick with grief; the dinner-table monologue in which she finally says the unsayable to her son is as frightening as anything supernatural in the film, and her absence from that year’s awards conversation remains one of its stranger oversights. Alex Wolff makes Peter’s guilt almost unwatchable in its vulnerability, Gabriel Byrne grounds everything as the husband still reaching for a rational explanation, and Milly Shapiro’s tongue-click became the sound an entire culture remembered. Ann Dowd, as a too-friendly stranger from a grief-support group, quietly turns the screws.

The final movement, which pulls the domestic tragedy into overt occult territory, has always split audiences — some feel the mystery is over-explained, that the human horror was scarier than the ritual it turns out to be. But the design holds: everything in the last twenty minutes was planted in the first twenty, and a second viewing reveals a machine that was never going to let the Grahams go. That is, in the end, the film’s cruellest idea — that grief, mental illness and inheritance can look, from the inside, exactly like a curse.

Made for around ten million dollars, Hereditary went on to earn more than eighty million worldwide and became a cornerstone of the A24 horror wave — the film that turned Aster into a name to watch and pointed straight ahead to Midsommar. Years on it still tops best-of-the-decade horror lists, and still empties the room of anyone who came looking for a comforting scare. It is not a fun house. It is a haunted one, and it knows the difference.

A landmark of modern horror: impeccably built, unbearably acted, and far more upsetting than its jump scares suggest. The occult finale divides viewers, but the family tragedy underneath is close to flawless.