“Your mommy won’t save you.”
From horror visionary James Wan, the creative force behind the Saw, Insidious, and The Conjuring franchises, and acclaimed director **Rob Savage> (Host, The Boogeyman), comes Other Mommy, a chilling supernatural horror film based on Josh Malerman‘s New York Times bestselling novel Incidents Around the House.
Starring Jessica Chastain in a haunting dual performance, Other Mommy follows a young girl who befriends a mysterious entity that looks exactly like her mother, but harbours terrifying intentions.
Produced by Blumhouse and Atomic Monster, Other Mommy arrives exclusively in theatres on October 9.
Other Mommy
- Director: Rob Savage
- Starring: Jessica Chastain, Arabella Olivia Clark, Jay Duplass, Dichen Lachman, Arian Moayed, Karen Allen, Sean Kaufman, Adam Silver
- Genre: Horror
Plot Synopsis
Young Bela lives what appears to be a normal childhood until an unsettling presence begins haunting her home.
The mysterious figure calls itself “Other Mommy,” and while it bears an uncanny resemblance to Bela’s loving mother, something about it feels deeply wrong. As the entity grows increasingly obsessed with the young girl, it asks one chilling question:
“Can I go inside your heart?”
As Bela’s connection to the sinister doppelgänger deepens, the line between reality and nightmare begins to disappear. Her parents struggle to understand the terrifying force invading their lives, while the entity’s true intentions become increasingly horrifying.
What begins as an imaginary friendship soon transforms into a terrifying battle for Bela’s soul, forcing her family to confront an evil unlike anything they have ever imagined.
Cast & Characters
- Jessica Chastain as Bela’s Mother / Other Mommy – Chastain takes on a dual role, portraying both Bela’s real mother and the terrifying supernatural entity impersonating her.
- Jay Duplass as Daddo – Bela’s father, determined to protect his daughter from the growing supernatural threat.
- Arabella Olivia Clark as Bela – A young girl whose unsettling friendship with “Other Mommy” places her family in unimaginable danger.
- Dichen Lachman – Supporting role.
- Arian Moayed – Supporting role.
- Karen Allen – Supporting role.
(Additional character details have not yet been officially announced.)
Creative Team
Director
- Rob Savage
Screenwriter
- Nathan Elston (Succession)
Based On
- Incidents Around the House by Josh Malerman
Producers
- Blumhouse
- Atomic Monster
A New Nightmare from the Masters of Modern Horror
With James Wan producing and Rob Savage directing, Other Mommy brings together two of modern horror’s most acclaimed creative voices. Adapted from Josh Malerman’s unsettling novel, the film blends psychological terror, supernatural suspense, and emotional family drama into a deeply disturbing cinematic experience.
Jessica Chastain’s dual performance as both a protective mother and her terrifying supernatural counterpart promises to be one of the film’s biggest highlights, while the story’s eerie premise taps into childhood fears of trust, identity, and the monsters hiding inside the home.
Release Date
Other Mommy opens exclusively in theatres on October 9.
With an acclaimed cast, a bestselling source novel, and the combined talents of James Wan, Rob Savage, Blumhouse, and Atomic Monster, Other Mommy is shaping up to be one of 2026’s most anticipated horror movies for fans of supernatural thrillers and psychological horror.
