Hereditary ending explained: who Paimon is and why Peter is crowned
Spoilers ahead: this article discusses the ending.
Hereditary ending explained in short: the Graham family was never cursed by accident. Ari Aster's 2018 horror film ends in a treehouse where a cult crowns Peter as the demon king Paimon, completing a plan his grandmother Ellen started before the film began.
Aster's debut feature stars Toni Collette as Annie, with Alex Wolff, Milly Shapiro, Ann Dowd and Gabriel Byrne. Critics praised Collette's performance, while audiences gave the film a D+ CinemaScore, partly because of how hard its final act turns.
Here is what happens, who Paimon is, and how the clues fit together.
Hereditary ending explained: what happens at the end of Hereditary
After Charlie dies in the car accident, Annie joins a grief group and befriends Joan, who teaches her a séance. The séance opens the door to something in the house. Annie finds evidence that her late mother Ellen led a coven devoted to summoning Paimon.
Possessed, Annie kills herself with piano wire in the attic. Her husband Steve burns to death after Annie's attempt to destroy Charlie's sketchbook. Peter falls from the attic window, survives, and wakes to follow a glowing presence into the treehouse, where the naked members of the coven kneel before him.
Who is King Paimon
Paimon is one of the kings of hell, and in the film he prefers a male body. That is the key to the whole plot. Charlie was the first host, but she was a girl. Her death was the step that let the coven move Paimon into Peter, the host they wanted all along.
In the treehouse, a crown is placed on Peter's head and Joan's voice declares that the coven has corrected the earlier mistake and given Paimon a male body. The film ends with Peter, now the demon, silently watching his followers.
How Ellen planned it
The cult is visible throughout if you look. Strangers smile at Peter. Joan seems to appear in Annie's life by chance. Ellen's memorial draws people Annie does not know. These are coven members guiding events.
The deaths that seem random are steps in a ritual. Charlie's death, Annie's possession and Steve's death clear the way for the final host, which is why the film's title points to what the family inherits rather than what happens to it.
Clues viewers miss the first time
Aster planted signals before the reveal makes sense.
- Annie's miniature dioramas mirror the family's life as if the Grahams are figures moved by someone else.
- Charlie's clicking sound returns when Peter is possessed, linking the two hosts.
- Most interiors were built on soundstages, giving the house the dollhouse look that echoes Annie's models.
- Colin Stetson's score uses trumpets at the climax, a nod to the mythology surrounding Paimon.
Reading the ending as grief
Hereditary works on two levels. The supernatural plot is a cult hijacking a family. The emotional plot is about inherited trauma, the fear that what was done to us will be done through us. The cult is the literal version of a family history that Peter could never escape.
Aster has resisted making a prequel, saying in 2026 that "It never feels like the right time."
Why audiences were split
The film was released by A24 in June 2018 after premiering at Sundance in January. Critics praised it, but the D+ CinemaScore shows how many viewers were thrown by the shift from family drama to occult horror. On a second watch, the cult's presence is clear from early on, and the ending reads as inevitable rather than sudden.
Questions people ask
What happens to Peter at the end of Hereditary?
He is possessed by Paimon and crowned by the coven in the treehouse as the demon's chosen male host.
Why did the cult kill Charlie?
Charlie was Paimon's first host but female. Her death let the coven move Paimon into Peter, the male body they wanted.
Who was Ellen in Hereditary?
Annie's mother and the leader of the coven that worked to bring Paimon into the family.