"Hereditary" is a 2018 American psychological supernatural horror film written and directed by Ari Aster in his feature directorial debut). The film stars Toni Collette, Alex Wolff, Milly Shapiro, Ann Dowd, and Gabriel Byrne, and follows a grieving family tormented by a demonic entity after the death of their secretive grandmother). The film explores themes of grief, trauma, and family dysfunction, and has been compared to classic horror films like "The Exorcist" and "Rosemarys Baby").

The film has received critical acclaim for its harrowing and unsettling atmosphere, as well as its strong performances and cinematography). However, it has also been criticized for its slow pacing and divisive ending.

In summary, "Hereditary" is a horror film about a family dealing with grief and trauma while being tormented by a demonic entity. The film explores themes of family dysfunction and has received critical acclaim for its unsettling atmosphere and strong performances.