Your mommy won't save you.
Young Bela forms a relationship with a sinister entity in her home that looks uncannily like her own mother, drawing her into a terrifying and increasingly dark world.
Other Mommy (2026) is a horror film directed by Rob Savage, released on October 7, 2026 with a runtime of 1h 33m. It stars Jessica Chastain, Jay Duplass, Arabella Olivia Clark and Karen Allen. Viewers rate it 5.8 out of 10 across 167 ratings.
Watch the official trailer for Other Mommy before you stream it.
Official trailers, teasers, clips and featurettes for Other Mommy.
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Jessica Chastain
as Mommy / Other Mommy
Jay Duplass
as Daddo
Arabella Olivia Clark
as Bela
Karen Allen
as Grandma Ruth
Arian Moayed
as Uncle Frank
Dichen Lachman
as Lois Anthony
Sean Kaufman
as Kelvin
Adam Silver
as Brian
Alec Secăreanu
as Ruiss
Millie Wood
as Little Girl
Travis Nelson
as Tony
Carrie Dimaculangan
as Callie
Directed by Rob Savage, written by Josh Malerman and Nathan Elston, produced by James Wan.
Average viewer score of 5.8/10 from 167 ratings.
We could have had Legosi, or even Bartok, but no - this "Bela" (Arabella Olivia Clark) is just an ordinary little girl growing up in, yep you've already guessed - a family with some secrets to keep. Her "Daddo" (Jay Duplass) does most of her rearing as successful mommy (Jessica Chastain) is out making a good living for them all. It turns out, though, that it isn't just the parents who have secrets, "Bela" has one…
Reviewed on October 14, 2026
When I was watching this movie, I kept thinking of Poltergeist. The plot is similar enough to Poltergeist to make the comparison. Only in this one they actually believe the kid straight off the bat, which is refreshing and works quite well. It is a very spooky movie and it does play very well. It's well acted and well produced, and some of the violence feels very earned when you get to the twist at the end. I…
Reviewed on October 15, 2026
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Other Mommy (2026) is currently available to rent or buy from CosmoGo. No subscription streaming option is listed right now, so availability may change.
The main cast of Other Mommy (2026) includes Jessica Chastain, Jay Duplass, Arabella Olivia Clark, Karen Allen and Arian Moayed. The film was directed by Rob Savage. You can see the full cast and crew list, with character names, further up this page.
Other Mommy was released on October 7, 2026 and runs for 1h 33m.
Other Mommy (2026) holds an average rating of 5.8 out of 10 from 167 viewer votes, and is a good pick if you enjoy horror films. Read the viewer reviews on this page to decide for yourself.
Yes. The official Other Mommy trailer is embedded in the trailer section of this page and plays instantly, no download or sign-up required.
