Other Mommy Trailer Puts Jessica Chastain Inside a Terrifying Haunted House

Jessica Chastain is stepping into horror, and the first trailer makes it clear she is not pulling any punches. The trailer for Other Mommy has arrived ahead of the film's October 8 release, and it promises a haunted-house story with a genuinely unsettling twist.

Adapted from Josh Malerman's novel Incidents Around the House, the film centers on a family whose new home harbors something that should not be there — and the trailer leans into the dread from the very first frame. With Chastain leading the cast, this is shaping up to be one of October's most intriguing horror releases.

Malerman's Horror Gets the Big-Screen Treatment

Josh Malerman has become one of the defining voices in modern horror fiction, and Incidents Around the House is among his most talked-about works. The novel's approach to the haunted-house formula — intimate, psychological, and deeply unnerving — gives the adaptation a strong foundation to build on.

The trailer suggests the film is honoring that approach. Rather than relying solely on jump scares, the footage emphasizes atmosphere: a house that feels wrong, a family slowly realizing the truth, and a presence that the camera only hints at. It is the kind of slow-burn dread that tends to linger long after the credits roll.

Chastain Takes on the Genre

Jessica Chastain's presence elevates the entire project. Known for powerhouse dramatic performances, her move into horror brings a level of craft and intensity that the genre does not always get from A-list leads. The trailer shows her in full command — frightened, furious, and determined — and it is easy to see why the role was built around her.

Horror has a long history of being revitalized by serious actors taking it seriously, and Chastain looks poised to join that tradition. Her performance could be the element that pushes Other Mommy from a solid genre entry to a genuine standout.

An October 8 Date Worth Circling

Arriving on October 8, Other Mommy lands at the perfect moment — early enough in the month to build word of mouth, and squarely in the season when audiences are actively hunting for scares. If the trailer is any indication, this is one haunted house worth visiting.

Malerman adaptations have a strong track record when handled with care, and the author's fingerprints are all over the current horror landscape. His work tends to weaponize the familiar — a house, a family, a child's voice — and twist it into something deeply wrong. The Other Mommy trailer suggests the filmmakers understand that assignment, keeping the scares rooted in domestic unease rather than spectacle. In a month crowded with horror releases, that grounded approach could be the film's sharpest edge.