Hereditary is a psychological horror film about a grieving family haunted by supernatural forces after the death of their grandmother. The film, directed by Ari Aster, stars Toni Collette, Alex Wolff, Gabriel Byrne, and Milly Shapiro, and was released in 2018 by A24. After the death of her mother, artist Annie and her family uncover their terrifying legacy and grapple with malevolent forces beyond their control. Watch trailers & learn more. A family uncovers dark secrets and faces a sinister fate after the death of their matriarch. Hereditary is a 2018 horror film by Ari Aster, starring Toni Collette, Alex Wolff and Gabriel Byrne. After the death of her mother, artist Annie and her family uncover their terrifying legacy and grapple with malevolent forces beyond their control.