Like «The Babadook» and «Goodnight Mommy» before it, «Hereditary» involves a relationship between a mother (Toni Collette, delivering an Oscar - worthy master - class in emotional terror made physical much like Essie Davis did in «Babadook») and a son (Alex Wolff, heartbreaking and hypnotic) that is first
contorted then corroded entire
by unfathomable
grief.