Parker Posey to Star in New Blumhouse Horror 'Sleepover'

Parker Posey is attached to star in the upcoming horror film "Sleepover," a new production from Blumhouse Atomic Monster and Universal Pictures. The movie is scheduled to premiere in theaters on October 8, 2027. Director Jacob Chase, known for "Insidious: Out of the Further," helms the project, working from a screenplay he developed with Bryce McGuire, the screenwriter behind "Night Swim." "Sleepover" is based on an original short story penned by McGuire.

Posey brings significant horror experience to "Sleepover," having previously appeared in "Scream 3" and "Blade: Trinity." Her recent work includes "Thelma," "Beau Is Afraid," and HBO's "White Lotus." She will also be seen in Martin McDonagh's "Wild Horse Nine," set for release on November 6, and hosts the reality competition series "The Mob," premiering on Hulu on October 26. Jason Blum is producing the film, with Chase, McGuire, and Bea Sequeira serving as executive producers.

This collaboration marks another venture for Blumhouse Atomic Monster, following their success with Chase's "Insidious: Out of the Further," which grossed $169 million worldwide. Further casting and specific plot details for "Sleepover" are expected to be announced.

The film is a Cinescape Entertainment production. Universal Pictures and Blumhouse Atomic Monster are presenting the project. Lilly Tyson is overseeing "Sleepover."