Parker Posey to Star in Blumhouse Horror Sleepover

Parker Posey will star in Sleepover, a horror film from Blumhouse Atomic Monster and Universal Pictures, as Variety exclusively revealed on 13 October 2026.

The casting announcement locks in a lead for the project. The film is scheduled for a theatrical release, meaning cinemas first, on 8 October 2027, according to the same report.

Jacob Chase is directing. He co-wrote the script with Bryce McGuire, adapting McGuire's original short story for the screen.

Jason Blum is producing. Chase, McGuire and Bea Sequeira are credited as executive producers, the senior role that typically covers creative and business oversight rather than day-to-day production work.

The film is described as a Cinescape Entertainment production presented by Universal Pictures and Blumhouse Atomic Monster. That structure sets out who made the film and who is bringing it to audiences.

Chase arrives with recent horror credentials. He is the director behind Insidious 6, as noted by TheWrap.

For fans, this means a wait. With the release date fixed almost a year out, further details on story and additional casting are still to come.