Jessica Chastain is heading into Halloween season with one of the buzziest horror titles on the calendar. Other Mommy has gained real pre-release momentum ahead of its October 9, 2026 theatrical debut, with the film now eyeing a $22 million to $29 million domestic opening. If that range holds, Universal will have a major October launch on its hands, and Other Mommy would stand as the biggest post-pandemic opener among horror book adaptations.
The attention around the film is easy to understand. This is not a sequel leaning on decades of franchise memory, but a studio horror release built around a strong central conceit, Chastain in a dual role, Rob Savage behind the camera, and James Wan producing. In a theatrical climate where horror keeps finding fresh ways to pull audiences in, Other Mommy has arrived at exactly the right moment.
The Latest Tracking Update
One reason the film feels especially well placed is its release window. Universal had initially set Other Mommy for May 8 before moving it to October 9, a stretch of the year that regularly gives horror titles more room to breathe and more visibility with audiences already in the mood for the genre. The Halloween corridor has often turned well-marketed chillers into events, and Other Mommy now appears positioned to benefit from that seasonal appetite.
The release also marks an important moment for Savage. After breaking out with Host and then moving into studio territory with The Boogeyman, he now returns with a higher-profile title led by an Oscar-winning star. That creative path gives Other Mommy an added layer of interest, especially for viewers watching how newer horror filmmakers are making the jump to bigger commercial stages.
What Other Mommy Is About
Directed by Rob Savage and written by Nathan Elston, Other Mommy is a supernatural horror film produced by James Wan through Atomic Monster alongside Blumhouse Productions and Spin a Black Yarn. Universal Pictures is distributing the film in the United States. The movie is based on Josh Malerman’s 2024 novel Incidents Around the House, extending the screen presence of an author already well known to genre fans through Bird Box.
The story follows Bela, a young girl haunted by a sinister figure she calls Other Mommy. The entity looks and sounds like her mother, turning the family home into something far more disturbing than a standard haunted-house setup. Chastain plays both Ursula and the doppelganger, while Jay Duplass, Dichen Lachman, Arabella Olivia Clark, Sean Kaufman, Karen Allen, and Arian Moayed complete the ensemble cast. The film runs 93 minutes and carries an R rating.
Jessica Chastain’s Recent And Upcoming Work
Chastain’s recent screen work has largely lived in the world of adult drama and psychological tension, from Memory in 2023 to Mothers’ Instinct in 2024, where she starred opposite Anne Hathaway. That stretch reinforced her prestige credentials, but Other Mommy gives her a chance to step back into a genre space that has already produced memorable audience-facing work in her filmography.
There is also a neat sense of return here. Chastain previously connected with horror audiences through Mama and later through It Chapter Two, so Other Mommy arrives with both familiarity and fresh intrigue. As of October 2026, it stands as her next confirmed theatrical release, making it an especially interesting moment in a career that has moved with ease between awards-season drama and big-screen genre storytelling.
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