This film takes a budget I imagine would cover a finished shot or two for Ari Aster and puts it in most of the right places to drive home the horror of a teenager, already mired in grief, discovering real guilt and shame. The second act is full of tension built out of almost nothing and the third descends through some shockingly good action to a bleakly inescapable end, but the tipping point between them didn’t quite feel earned to me.
