Kane Parsons is twenty years old, came from YouTube, and has made the best horror film of the year. Backrooms takes the liminal space internet meme and turns it into an Ejiofor-anchored psychological freakout about a divorced furniture store owner who walks through a wall and keeps walking. We talk about what makes the film so effectively unsettling, why the monsters are its least frightening element, and why Parsons is the most exciting debut director we have encountered in years.