Other Mommy Trailer And Poster Find Jessica Chastain Dealing With Her Evil Doppelgänger

Other Mommy Trailer And Poster Find Jessica Chastain Dealing With Her Evil Doppelgänger

The first trailer and poster for Other Mommy have been officially released, and they find Jessica Chastain (Dark Phoenix) going to some dark places in this new movie from The Boogeyman director Rob Savage.

By JoshWilding - Jul 21, 2026 03:07 PM EST
Filed Under: Horror
Source: FearHQ.com

As we first reported over on FearHQ.com, the first trailer and poster for Other Mommy have been released. You may have caught the tease before select screenings of The Odyssey this past weekend, and Jessica Chastain's return to the horror genre looks positively spine-chilling.

From producer James Wan, one of the most influential architects of modern horror behind the Saw, Insidious, and The Conjuring franchises, and Rob Savage, the director of bold genre films Host and The Boogeyman, comes a terrifying trip into the darkening world of a young girl, Bela, who forms a relationship with a sinister entity in her home that looks uncannily like her own mother.

Academy Award winner Jessica Chastain (It Chapter Two, The Eyes of Tammy Faye) stars in a dual role as Bela’s mother and as "Other Mommy," a manifestation of the entity. Jay Duplass (Transparent, Industry) plays Daddo, Bela’s father, and Arabella Olivia Clark (The Housemaid, The Hand that Rocks the Cradle) plays Bela. 

The impressive supporting cast includes Actor Award nominee Dichen Lachman (Severance), Emmy and Tony Award nominee Arian Moayed (Succession) and screen icon Karen Allen (Indiana Jones).  

Talking to The AU Review, Wan praised Chastain's performance/s in the movie when he enthused, "[She's] really the secret weapon. The secret sauce to this movie. It would not work as well as it does if it were not for her, and it’s truly not your typical slasher/horror villain movie. So much of what makes this movie work is what she brings to the table."

"It's part of the fun in watching this film and asking, 'Is this the good Jessica Chastain or is this the demonic Jessica Chastain?' You’re never quite sure which is which, and that’s part of the fun. Even more deceiving is the fact that Rob made this movie through the perspective of the little girl, and watching it through this young, innocent kid’s perspective, you’re never sure which mother it is."

"But what makes it fun is that the other mommy always just goes one step too far into fantastical territory," the filmmaker added, "and that’s when it breaks the reality, and the audience realises, 'Oh, this isn’t the good mother.'"

From Blumhouse Atomic Monster, Other Mommy is directed by Rob Savage, from a screenplay by WGA Award winner Nathan Elston, writer for the Emmy-winning sensation Succession, based on the New York Times bestselling novel Incidents Around the House by Josh Malerman (Bird Box). Executive producers include Michael Clear, Judson Scott, Rob Savage, Josh Malerman, and Ryan Lewis. 

Other Mommy arrives in theaters on October 9.

About The Author:
JoshWilding
Member Since 3/13/2009
A lifelong comic book fan who grew up on Spider-Man: The Animated Series in the '90s, Josh Wilding has been contributing to ComicBookMovie.com since 2009.

While he's also written for websites like Batman-News, HeyUGuys, and WhatCulture, Josh is a Rotten Tomatoes-approved critic for CBM and the site's #1 contributor with nearly two decades of experience covering film and TV news (including interviews with Tom Holland, Chris Pratt, Gary Oldman, Halle Berry, Jon Bernthal, Tom Welling, and hundreds more).

Based in the UK with his wife, Josh is also an avid WWE and Formula 1 fan and writes about those passions on CBM's sister sites, TheRingReport.com and FullThrottleHQ.com. Favourite superhero? Spider-Man. Favourite pro wrestler? CM Punk. Favourite F1 driver? Max Verstappen.
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Simonsonrules
Simonsonrules - 7/21/2026, 3:29 PM
This looks amazing.
MasterMix
MasterMix - 7/21/2026, 3:30 PM
User Comment Image
TheHumanRocket
TheHumanRocket - 7/21/2026, 3:44 PM
Looks very cool
MisterBones
MisterBones - 7/21/2026, 3:59 PM
Terrified the whole theater before The Odyssey started

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