Other Mommy Release Date, Cast, Trailer and Box Office: Everything We Know

Other Mommy story

The film follows eight-year-old Bela, who begins to suspect that the woman living in her house is not really her mother (4, 10). Jessica Chastain plays both the real mother, Ursula, and the doppelganger entity the girl calls "Other Mommy" (4, 14). The film is an adaptation of Josh Malerman's novel Incidents Around the House, published in June 2024 (12, 14), and reportedly diverges from the book's ending, with a darker conclusion that has drawn mixed reactions (14). The story also includes a surreal sequence set at a Chuck E. Cheese-style venue (14). According to Malerman, the idea was inspired by a real anecdote: his brother told him about a child saying goodnight twice at bedtime, the second time to "Other Mommy" (12). The film also has a post-credits scene, according to one report (10).

Other Mommy trailer and songs

The film's trailer, which reportedly played before The Odyssey in some theatres, centres on the entity asking, "Can I go inside your heart?" (7). Director Rob Savage told Cinema Express that the entity, Chastain's second self, must remain just out of reach, saying, "Whenever she appears, you learn something new," and that it reveals "How she manipulates Bela. How she tricks the audience." (2). The trailer was credited with driving strong pre-release tracking (6), though the film's promise of around 50 jump scares, as claimed by Savage, reportedly did not hold up on screen according to early reactions (7, 8).

Other Mommy rights deals and budget

The film was budgeted at $19 million, as reported (17).

Other Mommy advance booking and box office

Pre-release tracking estimates for Other Mommy varied as the date approached. Earlier projections from TheWrap put the domestic opening at around $24 million, with some theatrical sources suggesting it could reach closer to $30 million (5). A separate report citing Koimoi projected an opening day above $20 million across roughly 3,200 North American theatres (6). After release, reported figures diverged: one report put the opening day at $13 million with a projected total gross of $28 million (17), while another, published the same day, reported an opening weekend of $28 million across North America, exceeding Universal's $20 million projection (18). The film topped the weekend box office ahead of Sony's The Social Reckoning, which opened to $2.1 million on its first day from 2,606 screens with a weekend total of $6 million, as reported (17). Reviews were largely negative: the film received a D+ CinemaScore, described as the lowest since Megalopolis in 2024 (17, 18), and Rotten Tomatoes scores were reported at 20% (17) and 19% (18) in different accounts, with an audience score of 47% also reported (17). Critics including Doug Jamieson of The Jam Report, who gave it 1.5 out of 5 stars and called it "truly dreadful," and Peter Gray of The AU Review, who rated it two stars and called it "more silly than scary," were sharply critical (9). At Blumhouse Atomic Monster's New York Comic-Con panel, Jason Blum addressed criticism of the film's title rather than its reviews (15).

Other Mommy OTT release

An OTT release date for Other Mommy has not been reported.

Sources

1. Josh Hartnett Hunts Sea Monsters As Jessica Chastain Returns To Horror
2. Jessica Chastain’s Other Mommy Is Meant To Be Unseen
3. Arabella Olivia Clark’s Unicorn Role Is Finally Here: 'Other Mommy' Hits Theatres October 9
4. Jessica Chastain Explains Title Choice for Horror Film Other Mommy
5. Jessica Chastain Horror Film Tracks Near $24 Million Opening
6. Other Mommy Trailer Hype Fuels $20 Million Opening Forecast
7. Other Mommy Trailer Was Just the Start — Now the Film’s Out and It’s a Mess
8. Other Mommy Gets Roasted in Early Reactions
9. Other Mommy Reviews Pour In: Chastain's Horror Film Gets Brutal Criticism
10. Other Mommy Has A Credits Scene Worth The Wait
11. Jessica Chastain’s New Blonde Bob Is a Horror Move
12. The Real-Life Moment That Haunted 'Other Mommy'
13. Jessica Chastain Other Mommy Face: How She Created Her Viral Horror Look
14. Other Mommy's Darker Ending Sparks Debate
15. Other Mommy Bombs With Critics, Still Wins The Weekend Box Office
16. The Box Office Is Done With Reality
17. Other Mommy Tops Box Office Despite D+ Score, Sorkin’s Facebook Film Falters

Last updated 10 October 2026. This guide is kept by CutMirchi's automated Guide Desk from the stories listed above and from our release tracker, and is refreshed as new reports come in. Dates and figures are as those reports gave them; trade figures are estimates.