Open-angle wide-view shot, in broad daylight, of an average-looking person in the middle of a scene, slowly coming from the far background towards the camera. Impossibly terrifying? It is. It Follows performs horror genre miracles rarely seen in years. Except for one opening grisly image, it scares our pants off with virtually no violence; just terrifying concepts, locations, soundtrack, and atmosphere, following in the steps of John Carpenter's Halloween (evil following you) and The Ring (evil passed along to save oneself), all hovering around the familiar horror themes of teenage sex. Nevertheless, it's still a macabre entity on its own.
PS: The more terrifying notion, is the that possibility of endless sequels is very open.