Directed by Rob Savage and written by Nathan Elston, the supernatural psychological horror feature Other Mommy is scheduled for its theatrical release on October 9, 2026, distributed by Universal Pictures. Produced by James Wan under his Blumhouse and Atomic Monster banners in association with Spin a Black Yarn, the 93-minute feature is adapted from Josh Malerman's acclaimed 2024 bestseller Incidents Around the House. The film has generated intense online buzz across genre communities, praised for its terrifying premise, claustrophobic atmosphere, and a dual-role performance by Academy Award-winner Jessica Chastain. WHERE TO WATCH & STREAMING AVAILABILITY Other Mommy is slated to premiere across theatrical cinema chains worldwide, including AMC Theatres, Regal Cinemas, and Cinemark. Following its exclusive theatrical run, the feature will launch for subscription streaming on Peacock in the United States, followed by digital transactional video-on-demand release across platforms like Apple TV and Amazon Prime Video. INTRIGUING FACTS & TRIVIA Lead actress Jessica Chastain delivers a dual performance, portraying both the protective mother Ursula and the terrifying, contorting supernatural entity known as Other Mommy. The story is adapted from Josh Malerman's novel Incidents Around the House, which gained a massive following for telling its entire horror story strictly through the innocent perspective of an eight-year-old child. Director Rob Savage made a major splash in modern horror with his acclaimed lockdown horror film Host and Stephen King adaptation The Boogeyman. BACKSTORY & THEMATIC ANALYSIS The narrative follows eight-year-old Bela (Arabella Olivia Clark), a young girl living in a suburban home strained by subtle marital tensions between her parents, Ursula (Jessica Chastain) and Russ (Jay Duplass). Bela's quiet world is shattered when a entity begins visiting her bedroom at night, emerging from her closet. Taking on the unsettling, distorted appearance of her mother, the entity insists that Bela call her Other Mommy and repeatedly asks for permission to go inside her. As Other Mommy becomes increasingly aggressive and visible to the rest of the household, Ursula and Russ realize that the entity feeds on domestic instability and childhood fear. Desperate to protect her daughter, Ursula must confront both her own personal flaws and a physical manifestation of her own face that seeks to replace her entirely within the family unit. Thematically, Other Mommy explores maternal anxiety, childhood innocence, the impact of marital dysfunction on children, and terror within domestic spaces. By manifesting familial trauma as a grotesque mimic, the story illustrates how repressed emotional pain can warp the safety of home into a living nightmare. BEHIND-THE-SCENES INSIGHTS Director Rob Savage collaborated with cinematographer Lowell A. Meyer to craft claustrophobic visual framings, utilizing low-angle perspective camera shots that mimic a young child's point of view. The practical effects crew relied on contortionist body doubles combined with minimal digital enhancements to give the entity an unnatural, bone-snapping movement style under furniture and inside shadows. Through its terrifying central concept, claustrophobic direction, and standout double lead performance, Other Mommy delivers an unforgettable entry in modern psychological horror. For a preview of Jessica Chastain's terrifying dual performance and the film's chilling domestic atmosphere, watch the OTHER MOMMY Official Trailer. This official trailer provides a direct look at the supernatural entity, character dynamics, and horror sequences.