Other Mommy

SHE LOOKS EXACTLY LIKE MOM

Bela knows what her mother looks like.

That should make things easier.

It doesn’t.

In Rob Savage’s Other Mommy, eight-year-old Bela begins forming a relationship with a sinister entity inside her home.

The problem is what it looks like.

Her mother.

Jessica Chastain plays both sides of that nightmare.

She is Bela’s real mother.

And she is Other Mommy, the manifestation of the entity trying to get closer to the girl. 

That turns recognition itself into a trap.

A face should be reassuring.

A voice should be familiar.

A child should be able to look at her mother and know who is standing in front of her.

Other Mommy takes that certainty away.

The movie is based on Josh Malerman’s novel Incidents Around the House, adapted for the screen by Nathan Elston. Universal identifies Elston as the screenwriter and Rob Savage as director, with James Wan producing. 

Savage’s interest in the story appears to be rooted less in mythology than in family fear.

In an interview discussing the movie, he emphasized the central question of what ordinary parents would actually do if something impossible began happening to their child—not what horror-movie characters are expected to do, but what recourse a real family might imagine they have. 

That makes Bela’s point of view especially important.

She is not simply being chased by a monster.

She is developing a relationship with it.

And because that entity looks like someone she already loves, the danger is tangled up with trust.

Arabella Olivia Clark plays Bela.

Jay Duplass plays Daddo, Bela’s father.

The supporting cast also includes Dichen Lachman, Arian Moayed, and Karen Allen. 

But the movie’s central trick belongs to Chastain.

Savage has described working with her in extremely precise terms: asking her to let the audience believe they are looking at the real mother while slipping in just enough of Other Mommy to make viewers doubt what they are seeing. 

That precision is the entire game.

If the copy were obvious, there would be no tension.

If the difference were impossible to perceive, there would be no paranoia.

The horror lives in the tiny space between those two states.

Is that Ursula?

Or is that something pretending to be Ursula?

The audience may know there are two versions.

Bela has to live with the possibility that either one could be standing in front of her.

Universal’s official synopsis describes the film as a story about a young girl whose home is invaded by a sinister entity that takes on her mother’s appearance. 

That phrase—takes on her mother’s appearance—is more disturbing than a conventional haunting because it turns the safe part of the house into another uncertainty.

A bedroom door can be closed.

A dark hallway can be avoided.

A face cannot.

The movie also places Chastain in a more physical kind of horror performance than a simple dual role might suggest.

Recent coverage of the film describes Savage’s fascination with how she uses posture, movement, and restraint to distinguish the two presences without relying only on dialogue or effects. 

That matters because the creature’s power is not simply that it resembles Bela’s mother.

It is that it can resemble her almost correctly.

Almost warm enough.

Almost familiar enough.

Almost safe enough.

And horror has always understood how much can fit inside the word almost.

Behind the film is a particularly strong modern-horror combination.

Savage directed Host and The Boogeyman.

James Wan produced through Blumhouse Atomic Monster, bringing the filmmaker behind Saw, Insidious, and The Conjuring franchises into the project’s creative foundation. Universal also lists Michael Clear, Judson Scott, Rob Savage, Josh Malerman, and Ryan Lewis as executive producers. 

The finished movie runs 91 minutes and is rated R for some bloody violence and language. 

Universal opens Other Mommy wide in U.S. theaters on October 9, 2026. 

So today, September 12, its Friday Night VHS status is:

COMING SOON.

And because it has not opened yet, we stop before the movie does.

We know Bela meets something.

We know it looks like her mother.

We know she begins trusting it.

We know Jessica Chastain plays both faces.

Anything beyond that belongs to October 9.

Because the worst part of Other Mommy isn’t that something terrifying has entered Bela’s house.

It’s that it already knows the face she is most likely to trust.

She looks exactly like Mom.