A $27.8 million opening against a $19 million production budget
Other Mommy finished first at the North American box office for the October 9–11 weekend. Final figures reported by Box Office Mojo and The Numbers put its three-day domestic opening at $27,805,825 from 3,365 theaters, slightly above the $27.5 million Sunday estimate initially circulated by Universal Pictures.
The result is particularly notable given the film's reported $19 million production budget. That figure does not include marketing and distribution expenses, and movie theaters retain a share of ticket sales, so it would be misleading to describe the film as already profitable. Nevertheless, the opening gives Universal and Blumhouse Atomic Monster a promising commercial foundation.
The horror release finished ahead of Verity, which earned approximately $11.5 million during its second weekend, as well as Resident Evil and Heart of the Beast. Aaron Sorkin's The Social Reckoning opened in fifth place with an estimated $5.5 million.
The contrast is difficult to ignore. A supernatural story about a mysterious entity living inside a family home attracted substantially more opening-weekend business than a high-profile drama revisiting Facebook's most damaging controversies. That comparison does not establish a universal rule about audience preferences, but it does highlight how effectively horror can turn an accessible premise into a theatrical event.
Jessica Chastain confronts a horrifying version of herself
Other Mommy is based on Incidents Around the House, the novel by Josh Malerman, whose earlier work includes Bird Box. The story follows Bela, an eight-year-old girl growing up in a household strained by family tensions. Her life becomes increasingly disturbing when a supernatural presence begins communicating with her and takes on the appearance of her mother.
Jessica Chastain plays both Ursula, Bela's actual mother, and the sinister entity known as Other Mommy. Jay Duplass portrays Bela's father, while Arabella Olivia Clark plays the young girl at the center of the story. The supporting cast includes Dichen Lachman, Arian Moayed and Karen Allen.
Casting Chastain in both maternal roles gives the film its defining visual idea. The danger does not arrive as a completely unfamiliar monster. Instead, it imitates someone Bela already knows and trusts. The result is a recognizable horror concept built around the unsettling possibility that a familiar face might conceal something impossible to understand.
Rob Savage directs from a screenplay by Nathan Elston. The British filmmaker previously attracted attention with Host, a horror film structured around a video call, and later directed The Boogeyman. Other Mommy continues his interest in threatening familiar environments, although its theatrical scale and high-profile cast place it in a different commercial category.
James Wan is among the film's producers, further connecting the project to contemporary mainstream horror. Through Blumhouse Atomic Monster, the production combines a relatively contained budget with a recognizable star and a straightforward supernatural hook.
The audience response is considerably less encouraging
The commercial opening presents only one side of the story. Other Mommy received a D+ CinemaScore from audiences surveyed after its initial screenings, while professional reviews have also been overwhelmingly negative.
The Guardian criticized the film's dependence on jump scares, graphic violence and increasingly excessive set pieces rather than sustained psychological tension. Other reviewers questioned the coherence of the narrative and the extent to which it develops its central premise. Chastain's commitment to the dual performance has nevertheless attracted some favorable attention.
That reception could affect the film's theatrical trajectory. Horror audiences often turn out quickly when a trailer promises an intense or unusual experience, but sustained performance depends partly on whether those early viewers recommend the film. A poor CinemaScore does not automatically doom a horror release, as expectations and audience behavior can vary considerably within the genre. It is still an important warning sign.
The marketing campaign had a particularly strong visual identity. A disturbing maternal figure, an unnatural smile and the suggestion that something threatening is hiding inside an ordinary home are all ideas that can be communicated instantly. The trailer generated online attention ahead of release, giving the movie a recognizable identity without requiring audiences to know the original novel.
Why horror keeps delivering theatrical results
Other Mommy's opening reflects an established commercial advantage for certain horror productions. A relatively modest production budget, an accessible concept and wide theatrical distribution can produce substantial revenue without the financial exposure associated with a major action blockbuster.
Horror also offers something that is difficult to measure purely through reviews: an immediate collective experience. Audiences may buy tickets for the atmosphere, the anticipation of being frightened or the opportunity to react alongside other viewers. Critical approval remains relevant, but it is not necessarily the decisive factor behind the opening weekend.
Timing provides another advantage. Other Mommy arrived in early October, when American audiences are approaching Halloween and horror entertainment becomes an increasingly prominent part of the cultural calendar. Seasonal interest cannot guarantee success, but it gives a distinctive film a favorable opportunity to reach its audience.
The initial international performance adds to the positive commercial picture. Universal's opening estimates placed the film at approximately $45.2 million worldwide, including around $17.7 million from overseas territories. These preliminary figures suggested that the appeal of Chastain's sinister double was not confined to North America.
An impressive opening is only the beginning
The next question is whether Other Mommy can maintain its momentum. Daily box-office reports show that the film continued attracting moviegoers after opening weekend, but its second-weekend hold and longer theatrical prospects remain uncertain. The unfavorable audience response may become more consequential as initial curiosity fades.
It is equally important to separate commercial performance from artistic reception. Strong ticket sales do not invalidate negative reviews, just as negative reviews do not erase the revenue a film has already earned. Both can be accurate descriptions of the same release.
For now, Rob Savage's film has achieved something important: it has persuaded a significant audience to enter theaters despite the warnings. Jessica Chastain's unsettling double has proved effective at generating curiosity and ticket sales. Whether that curiosity develops into lasting enthusiasm is the question Other Mommy must answer next.
