There are plenty of terrifying moments in David Robert Mitchell’s It Follows, one of the best horror films of the last decade. There are a couple of effective jump scares, though the blank look on one character’s face following one of them suggests Mitchell isn’t too keen on them himself. No, the film gets a lot of horrifying mileage out of people just walking toward the camera, perhaps never more brilliant than in a 720-degree pan in a high school with someone walking toward them from outside only to be forgotten about and never confronted.