A24‘s upcoming horror feature The Backrooms has added Mark Duplass (The Morning Show), Finn Bennett (True Detective), Lukita Maxwell (Shrinking), and Avan Jogia (56 Days) to its cast. Chiwetel Ejiofor (the forthcoming Life of Chuck) and Renate Reinsve (The Worst Person In The World) were previously announced as the stars of the project, which hails from 20-year-old director Kane Parsons, who will become the youngest filmmaker in the studio’s history.

A24 and The North Road Company’s Chernin Entertainment are co-financing the film, which also counts 21 Laps Entertainment and Atomic Monster as producers.

Parsons is making his feature directorial debut from a script by Will Soodik. Plot details have not been revealed for The Backrooms, which is inspired by Parsons’ viral YouTube horror series, itself based on the urban legend and creepypasta of the same name.

Simply explained, The Backrooms are an endless, liminal space accessed by “no-clipping” out of reality. It is characterised by unsettling, empty office-like environments with damp carpets, yellow walls, and buzzing fluorescent lights. They are viewed as as a dimension separate from our own, filled with both mundane and terrifying elements, and potentially inhabited by entities. 

A release date for the film has not yet been announced.