Low-budget horror movie “Backrooms” has been generating “considerable buzz”, said Wallpaper. The unsettling directorial debut from 20-year-old YouTuber Kane Parsons is based on a viral web series he made as a teenager. It made $81 million (£60 million) in North America on its opening weekend, a new record for an original horror film.The inspiration for “Backrooms” came from a discussion on the 4chan message board about slipping through a “crack in reality” and finding yourself in an “infinite maze of identical corridors”. Now, the A24 studio has adapted the chilling series into a film starring Chiwetel Ejiofor as a furniture salesman who discovers in his showroom basement a “fluorescent-lit threshold opening onto an eerie, labyrinthine office space” that looks like it stretches on for ever.

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