Other Mommy had one of the year’s sharpest hooks. Rob Savage, who made Host and The Boogeyman, directs from Nathan Elston’s screenplay, adapted from Josh Malerman’s novel Incidents Around the House. Jessica Chastain plays both Ursula and the thing wearing her face, opposite Arabella Olivia Clark as Bela. As iHorror’s Anthony Pernicka reported, the whole story grew out of a...