Jessica Chastain Returns to Horror as Other Mommy Opens
Jessica Chastain returns to horror with Other Mommy, which opens in theatres on Friday, October 9. The film is directed by Rob Savage, according to The Hollywood Reporter. It is listed by its maker as distributed by Universal Pictures.
Chastain plays Ursula. Jay Duplass plays Russell. Arabella Olivia Clark plays 7-year-old Bela. That casting is set out in the October 9 review.
The story centres on the child. Bela is stalked by an entity called Other Mommy that looks like her mother Ursula. Chastain plays both the family matriarch and a second role, according to Variety.
The script is by Nathan Elston. It is based on Josh Malerman's novel Incidents Around the House. Savage directs from that script.
Other Mommy runs 1 hour 33 minutes. It is rated R, which in the United States means under-17s must be with an adult. The billed cast also includes Arian Moayed and Karen Allen.
Dichen Lachman is also in the cast, according to earlier reporting from The Hollywood Reporter. That report described Chastain's Ursula as a mother confronted by a copy.
The date is not the first one announced. The release was delayed from May to October 2026, according to The Hollywood Reporter. The film is described in that earlier report as a supernatural thriller, a story driven by forces beyond the natural world.
For fans planning an October cinema trip, this means another choice in a crowded month. Variety named Other Mommy in its list of horror films to watch for October 2026. The Hollywood Reporter published separate reviews coverage on October 8.
