Other Mommy Plot Summary (No Spoilers)
At the centre of Other Mommy is Bela, a young girl whose family home holds an unwelcome resident. The presence that reveals itself to her is not a shapeless shadow. It wears a face she knows better than any other: her own mother’s.
What begins as a strange bond soon becomes a pull Bela finds hard to resist. The entity draws her further from the safety of everyday life and deeper into something cold and frightening. The story places the relationship between a mother and her daughter, along with the distance that can grow between them, at the heart of its scares. The family must confront what is hiding in plain sight under their roof.
The film blends haunted-house tension with psychological horror. Much of its unease comes from a simple, chilling question: what happens when the person who should protect you can no longer be trusted to be who she seems? As the tagline warns, “Your mommy won’t save you.”
What Makes Other Mommy Notable: Cast, Director and Context
- Cast: Jessica Chastain takes on a dual role as both Mommy and the Other Mommy. Jay Duplass plays Daddo, and Arabella Olivia Clark plays Bela. The supporting cast includes Karen Allen as Grandma Ruth, Arian Moayed as Uncle Frank and Dichen Lachman as Lois Anthony. Sean Kaufman, Adam Silver, Alec Secăreanu and Millie Wood also appear.
- Director: Rob Savage directs from a screenplay by Nathan Elston.
- Source material: The film is based on a book.
- Production: This is an American production from Spin a Black Yarn and Blumhouse Atomic Monster. That pairing brings one of the best-known names in modern studio horror to the project.
- Genre and tone: It is a supernatural and psychological horror film with a running time of 93 minutes. It is rated R in the US.
Other Mommy Review: Audience Reception
For viewers looking for review context, the film holds an average audience score of 5.9/10 on TMDB, based on 142 votes at the time of writing. Scores may shift as more audiences see the film.
Who Will Enjoy Other Mommy
- Fans of supernatural and haunted-house horror
- Viewers drawn to psychological horror built around family relationships
- Admirers of Jessica Chastain who want to see her in a demanding dual role
- Followers of Blumhouse and Atomic Monster genre releases
- Anyone who likes a tight horror film running around an hour and a half
Other Mommy Release Date and Where to Watch
Other Mommy had its world release on 7 October 2026. It reached US theatres on 9 October 2026 with an R rating.
No streaming platforms are currently listed for the film in the US. Check local cinema listings for screenings. Streaming and digital availability may be announced later.
Trailer
Cast
Jessica Chastainas Mommy / Other MommySee credits →
Jay Duplassas DaddoSee credits →
Arabella Olivia Clarkas BelaSee credits →
Karen Allenas Grandma Ruth
Arian Moayedas Uncle Frank
Dichen Lachmanas Lois Anthony
Sean Kaufmanas Kelvin
Adam Silveras Brian
Photo: TMDB
FAQ
- When was Other Mommy released?
- Other Mommy had its world release on 7 October 2026. It was released in US theatres on 9 October 2026.
- Where can I watch Other Mommy?
- Other Mommy was released theatrically in the US. No streaming services are currently listed for it in the US, so check local cinema listings.
- Who is in the cast of Other Mommy?
- Jessica Chastain plays Mommy and the Other Mommy. Jay Duplass plays Daddo, Arabella Olivia Clark plays Bela, Karen Allen plays Grandma Ruth, Arian Moayed plays Uncle Frank and Dichen Lachman plays Lois Anthony.
- What is Other Mommy about?
- It follows a young girl named Bela who forms a bond with a sinister entity in her home. The entity looks just like her mother and draws her into a dark, frightening world.
- How long is Other Mommy and what is it rated?
- Other Mommy runs 93 minutes and is rated R in the US.
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