Ari Aster’s Hereditary opens simply: the white letters of Ellen Graham’s obituary blazing on a inky background. The matriarch is survived by her daughter Annie, an artist who creates miniature dioramas of her everyday life. We see one of her miniatures now: a cut-out model of her home in the forest. As we zoom in, we focus on a bedroom belonging to her teenage son Peter. Slowly, the miniature room fills the screen until the facsimile becomes reality and Peter’s father walks in to wake him for his grandmother’s funeral. From this point forward the line between reality and fantasy, between the actual and the imagined, will remain blurred.