Other Mommy (2026): The Complete Fan Guide
Other Mommy is a 2026 supernatural horror film from Blumhouse Atomic Monster, directed by Rob Savage and produced by James Wan. Jessica Chastain plays both Ursula and the entity that copies her face to win over Ursula’s 7-year-old daughter Bela. It adapts Josh Malerman’s novel Incidents Around the House and opened in US theaters on October 9, 2026.
Quick facts
| Release | October 9, 2026 (US theaters) |
|---|---|
| Director | Rob Savage |
| Screenplay | Nathan Elston |
| Producer | James Wan |
| Based on | Incidents Around the House by Josh Malerman (2024) |
| Starring | Jessica Chastain, Arabella Olivia Clark, Jay Duplass, Dichen Lachman, Arian Moayed, Karen Allen |
| Runtime / Rating | 93 minutes · R |
| Distributor | Universal Pictures |
Official trailers
Cast
Jessica ChastainUrsula / Other MommyPhoto: Harald Krichel / CC BY-SA 4.0, via Wikimedia Commons
Jay DuplassBela's dadPhoto: Colleen Sturtevant / CC BY 4.0, via Wikimedia Commons
Karen AllenGrandma RuthPhoto: Michele Eve Photography / CC BY-SA 4.0, via Wikimedia Commons
Dichen LachmanLoisPhoto: PhilipRomanoPhoto / CC BY 4.0, via Wikimedia Commons
Arian MoayedFrankPhoto: Max / CC BY 3.0, via Wikimedia Commons
James WanProducerPhoto: Kirby Taylor / CC BY 4.0, via Wikimedia Commons
Josh MalermanAuthor of the novelPhoto: Somethinonya / CC BY-SA 4.0, via Wikimedia Commons
Guides
- Other Mommy Ending ExplainedHow Bela wins, what the entity means, and two ways to read the final scene.
- Is Other Mommy Worth Watching?A spoiler-free look at tone, scares and reception.
- Full Plot SummaryThe whole story, act by act.
- Post-Credit SceneWhere it plays and what the final shush suggests.
- Book vs MovieHow the film changes the darker ending of Incidents Around the House.
- Parents GuideWhy it is rated R and which ages it suits.
- Where to WatchTheaters now, plus the expected digital and Peacock timeline.
- Cast & CharactersJessica Chastain’s dual role and the full cast.
- Official TrailerWatch the official Blumhouse trailer.
- What Is Other Mommy?The demon, its rules and what it represents.
- Movies Like Other MommyTen picks for maternal and doppelganger horror fans.
- Box Office TrackerPreviews, projections and weekend results.
- Reviews RoundupWhat critics and audiences are saying.
FAQ
When did Other Mommy come out?
Other Mommy opened in US theaters on Friday, October 9, 2026, distributed by Universal Pictures.
Who plays Other Mommy?
Jessica Chastain plays two roles: Ursula, Bela’s mother, and the Other Mommy entity that copies her face.
Is Other Mommy based on a book?
Yes. It adapts Josh Malerman’s 2024 novel Incidents Around the House. The book ends far more darkly than the film.
Is Other Mommy streaming?
It is playing in theaters only for now. Digital rental and a Peacock release are expected later; dates are still unannounced.
How long is Other Mommy?
The film runs 93 minutes and is rated R for bloody violence and language.