Parker Posey is set to star in Sleepover, a new horror film from Blumhouse, Atomic Monster, and Universal Pictures. The casting was revealed exclusively by Variety, marking another high-profile genre project for the actress known for her work in independent film and cult classics.
The film is scheduled to hit theaters on October 8, 2027. Jacob Chase, who directed Insidious: Out of the Further, will direct from a script he co-wrote with Bryce McGuire, the screenwriter behind Night Swim. The project is based on an original idea by McGuire, though plot details remain under wraps.
Sleepover brings together two of the most prolific forces in modern horror. Blumhouse, founded by Jason Blum, has produced franchises like Paranormal Activity, The Purge, and Halloween, while Atomic Monster, led by James Wan, is behind The Conjuring universe, Saw, and Malignant. Their partnership with Universal Pictures has become a reliable pipeline for mid-budget horror that frequently outperforms at the box office.
Posey’s involvement signals a continued embrace of genre material by an actress with a long and eclectic career. She first gained widespread attention in the 1990s with roles in Dazed and Confused, Party Girl, and Waiting for Guffman, and later appeared in Scream 3, Superman Returns, and the 2018 reboot of Lost in Space. More recently, she earned critical praise for her performance in The Staircase and appeared in Beau Is Afraid. Her move into a Blumhouse-led horror film places her within a studio system that has launched and revived numerous acting careers.
Chase’s attachment as director adds another layer of interest. His previous feature, Insidious: Out of the Further, was a 2023 installment in the Insidious franchise that he also co-wrote. That film demonstrated his ability to handle supernatural suspense within an established mythology. McGuire, his co-writer, wrote and directed Night Swim, a 2024 horror film produced by Blumhouse and Atomic Monster, which was based on his own short film. The creative team suggests Sleepover will lean into character-driven terror rather than straightforward slasher tropes.
The October 2027 release date positions Sleepover in a prime pre-Halloween window, a slot that has historically benefited horror releases. Universal and Blumhouse have frequently used early October weekends to launch films that capitalize on the seasonal appetite for scary movies. With more than two years until release, production details, additional cast, and a first look are expected to roll out gradually.
For now, the announcement confirms that Posey will lead a project backed by three major production entities and a director with recent franchise experience. As the film moves toward production, it will be watched closely by horror fans and industry observers alike, particularly given the track records of the principals involved.