October is giving horror fans another reason to head to cinemas, and Other Mommy could be the film that takes the US box office by storm this weekend.
The supernatural horror film, starring Oscar winner Jessica Chastain in a dual role, is projected to make around $20 million in North America when it opens on Friday, October 9, 2026.
Current Box Office tracking projects Other Mommy to open in around 3,200 cinemas. Directed by Rob Savage and released by Universal Pictures, the R-rated film has a clear shot at the No. 1 spot, especially with no major blockbuster competing for the same audience.
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What Is Other Mommy About?
The film follows Bela, an eight-year-old girl who encounters a supernatural entity that comes out of her wardrobe and takes the appearance of her mother, Ursula. Chastain plays both Ursula and the sinister Other Mommy, while Arabella Olivia Clark plays Bela and Jay Duplass plays her father, Daddo.
The story is adapted from Josh Malerman’s bestselling horror novel Incidents Around the House, which was also the basis for the film’s screenplay by Nathan Elston. James Wan, whose credits include The Conjuring, Insidious and Saw, produces the film through Atomic Monster alongside Blumhouse.
Chastain believes the film’s biggest fear comes from turning something normally associated with safety into a threat. “The one safe harbour for a child should be their parents, and that’s the scariest thing,” she told SYFY Wire.
Why $20 Million Is Possible
October is traditionally one of the strongest periods for horror, and audiences are already moving towards darker releases ahead of Halloween. Boxoffice Pro currently projects an opening range of $17 million to $22 million, while Deadline is also tracking the film around the $20 million mark.
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