There’s an apocalypse happening in It Comes at Night but we never get to see it. We see and hear only faint inklings of its terrors. What we do see—the desperation of a family trying to stay alive—is far more terrifying than any monster or zombie lurking in the darkness.
Source: Gizmodo – It Comes at Night Gouges Out an Intensely Intimate Horror Story From an Unseen Apocalypse