There's Someone Inside Your House

There's Someone Inside Your House is a 2021 American slasher film directed by Patrick Brice and adapted by Henry Gayden. It is an adaptation of the 2017 novel of the same name by Stephanie Perkins and stars Sydney Park, Théodore Pellerin, Asjha Cooper, Jesse LaTourette, and Diego Josef. The plot follows Makani Young (Park), a senior transfer student from Hawaii who finds herself in the center of gruesome murder cases in her newly acquainted town of Osborne, Nebraska.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.