Of course, you\u2019ll know that it all goes wrong eventually, but the genius is in how effective the TV milieu is. The movie is unafraid to allow huge swathes of time to pass by in relative normality, making the chilling set pieces land even harder. It\u2019s a triumph of tone above all else, never letting the viewer\u2019s discomfort subside, helped by the fact it all has the feel of an unearthed videotape, which is always scary.