‘Other Mommy’ Release Date, Plot, Cast, Trailer and Where to Watch as Jessica Chastain Plays Her Own Worst Nightmare
Jessica Chastain is heading back into horror, and the first look at ‘Other Mommy‘ is already making its rounds after debuting ahead of select screenings of Christopher Nolan’s ‘The Odyssey’. Moviegoers who caught it in theaters have been vocal about the scare, and the preview has quickly turned into one of the most talked about horror teasers of the season.
If you want to know what is coming, you are in the right place. Here is everything we know about ‘Other Mommy,’ from the theatrical date to the cast, the story, and how you can actually watch it.
‘Other Mommy’ Release Date and Where to Watch
‘Other Mommy’ arrives in theaters on Friday, October 9, 2026. The film was not always planned for this spot on the calendar, since Universal moved it from its previously announced May 8, 2026 date. That shift puts it squarely in spooky season.
As for where to watch, this is a theatrical release for now. Blumhouse, Atomic Monster and Universal are releasing the film in theaters, so fans will need to buy tickets from their local cinema.
Anyone hoping for a streaming date will have to wait. Digital release and streaming details typically are not announced until after a movie is already in theaters.
‘Other Mommy’ Trailer Sparks Nightmare Fuel Reactions
The trailer landed publicly on Tuesday, July 21, when Universal Pictures UK released it. The footage follows a young girl named Bela who becomes attached to a mysterious woman that looks exactly like her mother. Things turn ugly fast.
One of the most talked about moments involves the lookalike cooking for Bela and crawling beneath a kitchen table with her body twisted, leaving the family terrified. Viewers online clearly noticed, with one fan commenting that the under the table moment got them.
The scare factor is real enough that early viewers called the preview pure nightmare fuel. Another reaction pointed out that the trailer is compelling and that the real question is whether the movie can live up to what the preview promises. That is a fair challenge for any horror film that peaks early in its marketing.
‘Other Mommy’ Cast and Creative Team
Chastain headlines in a dual role, playing both Bela’s mother and Other Mommy, a manifestation of the entity. For an Oscar winner, it is a bold swing that lets her play warmth and menace in the same film. Hollywood Life notes that she had to pull double duty on set.
The ensemble is stacked with recognizable faces. Jay Duplass plays Russ, Bela’s father and Ursula’s husband, while Arabella Olivia Clark plays Bela. The cast also includes Dichen Lachman, Arian Moayed, Karen Allen, Sean Kaufman, Adam Silver and Rosie Anne O’Gorman.
Behind the camera, Rob Savage, known for ‘Host’ and ‘The Boogeyman,’ directs from a screenplay by Nathan Elston. The film is produced with James Wan and Blumhouse Atomic Monster, a pairing that has fans expecting something properly unsettling.
‘Other Mommy’ Plot and Book Origins
The story centers on Bela, a young girl in a home with marital problems, who confronts a sinister entity that comes out of her closet. She calls the presence Other Mommy, and it becomes increasingly threatening to her and her family. The creepiest part is how familiar the creature looks.
The film has literary roots too. It is based on Josh Malerman’s book ‘Incidents Around the House’. The novel’s premise has a family haunted by a supernatural presence determined to take up residence inside the girl.
With a trusted horror team, a standout dual performance, and a trailer that has already rattled audiences, ‘Other Mommy’ looks poised to be one of the October scares worth buying a ticket for. The big question is whether watching Chastain face down a version of herself will leave you sleeping with the lights on, so which of her two characters do you think will haunt you more.
