Jessica Chastain shocks in chilling trailer for Other Mommy

The first-look trailer for Other Mommy has arrived, confirming the film will open in theaters on October 9, 2026 — and marking a notable return to horror for Jessica Chastain. With a director known for pandemic-era chills and a story built around a child’s encounter with a mirror image of her mother, the movie is positioning itself as part of the strong wave of original horror shaping 2026’s box office.

The film centers on Bela, a young girl whose home becomes the site of an uncanny presence that looks and moves like her mother. Jessica Chastain portrays both the real parent and the eponymous supernatural double — a performance that promises psychological tension rather than jump-scare spectacle. Director Rob Savage, who earned attention for the Zoom-shot shocker Host, is at the helm, and Dichen Lachman joins the cast in a supporting role.

Other Mommy arrives at a moment when audiences and distributors are rewarding fresh, original horror concepts. Recent theatrical figures show appetite for new takes on fear rather than franchise reboots, which is one reason industry observers are watching this release closely.

What we know so far

• Title: Other Mommy
• Release date: October 9, 2026
• Director: Rob Savage (known for Host)
• Lead: Jessica Chastain (dual role)
• Supporting cast: Dichen Lachman
• Premise: A child named Bela encounters a sinister maternal doppelgänger in her home
• Source material: Adapted from a novel — the story’s first major screen adaptation

The trailer leans into atmosphere: glimpses of domestic spaces turned unfamiliar and a figure who mimics maternal comfort while radiating menace. Visual touches in the footage nod to recent genre hits such as Obsession and Backrooms, suggesting Other Mommy is drawing on the same trend of intimate, uncanny horror that blends family dynamics with surreal dread.

For Chastain, the film marks a substantial return to the genre since her supporting role in IT: Chapter Two (2019). Playing two versions of the same character raises the stakes for a performance-driven horror piece — the story’s unsettling heart will likely depend as much on acting and mood as on any special effects.

Industry context matters: studios are increasingly cautious but willing to back mid-budget horror when the concept feels original and marketable. If Other Mommy delivers a taut psychological core, it could follow the path of other 2026 standouts that proved audiences respond to novel scares.

Early takeaways

Expect a slow-building, domestic horror film that favors creeping unease over overt spectacle. The pairing of a character-led premise with a director experienced in constraining environments creates potential for a lean, effective fright piece.

One open question remains: how the adaptation will translate the novel’s tone and internal psychological beats to the screen. The trailer offers promising mood and performance cues, but the film’s success will depend on whether it can sustain its premise across feature length.

With less than a full year until release, Other Mommy is one to watch for fans of contemporary horror that blends familial themes with the uncanny. The first-look trailer sets expectations; the film’s box-office and critical reception this October will determine if it becomes a defining title of the season.

Jessica Morrison

Jessica Morrison is a seasoned entertainment writer with over a decade of experience covering television, film, and pop culture. After earning a degree in journalism from New York University, she worked as a freelance writer for various entertainment magazines before joining red94.net. Her expertise lies in analyzing television series, from groundbreaking dramas to light-hearted comedies, and she often provides in-depth reviews and industry insights. Outside of writing, Jessica is an avid film buff and enjoys discovering new indie movies at local festivals.