Pyewacket's payoff is a bit too meager given the creepy build-up. But as a psychodrama about a troubled mother and daughter, this movie is gripping from start to finish. Like a lot of the best horror, it's about the hells people conjure for themselves.
The heavy-handed score, narrow performances (Nicole Munoz as the repeatedly terrified daughter; Laurie Holden as the dense mum) and weak dialogue all fail to justify a provocative ending that overturns the exorcising conventions of the genre.