Other Mommy (2026): Is It Really That Bad? — Opening Weekend Verdict

It’s bedtime. You’ve tucked her in, kissed her forehead, turned off the lamp — and then, from the dark corner of the room, the empty corner, the one with nothing in it, your eight-year-old daughter smiles sweetly and says goodnight.

Not to you. To her. The other one. The one standing in the corner wearing her mother’s face.

And then the thing in the corner tilts its head, looks right at you, and asks the question you’ll hear in your nightmares for a week: “Can I go inside your heart?” No. Absolutely not. Hard pass. But here’s the thing, horror lover — that premise? That bone-deep, primal, parental dread? That’s the best horror hook of the year. The only question is whether the movie built around it deserves it.

The Verdict

Full disclosure, up front, because that’s how we do things here: I’m writing this on opening weekend, and I haven’t sat in that theater seat yet. No fake “I just walked out of the screening” energy from me. But you know what I have done? Read every review filed so far, crunched every number, watched that trailer until my neighbors started leaving notes on my door, and pieced together the fullest picture I can give you. Because when a movie opens to a 20% on Rotten Tomatoes after a summer of genuine hype, the story of why is worth telling — whether you buy a ticket or not.

So. Is it really that bad? Let’s start with what nobody disputes: the premise is a banger. Other Mommy comes from director Rob Savage — the guy who made Host, the little Zoom-found-footage nightmare that scared the entire internet senseless during lockdown — with James Wan producing through the Blumhouse–Atomic Monster machine. It’s adapted from Josh Malerman’s novel Incidents Around the House (yes, the Bird Box guy), and the real-life seed of it is almost too creepy to be true: Malerman’s own niece used to say goodnight to “Other Mommy” — a presence nobody else in the house could see. You can’t invent that. You can only survive it.

Jessica Chastain plays dual roles — Ursula, the mother, and the entity wearing her face — opposite newcomer Arabella Olivia Clark as eight-year-old Bela, with Jay Duplass, Dichen Lachman, Arian Moayed, and screen legend Karen Allen rounding things out. And for one beautiful summer, everything pointed up: the trailer dropped in front of The Odyssey and scared the hell out of unsuspecting Christopher Nolan audiences — that shot of a contorted Chastain under the kitchen counter became an instant horror-movie moment. Genuine buzz. Real anticipation. The kind of summer you dream about as a horror fan.

And then the reviews landed like a piano off a roof.

Twenty percent on Rotten Tomatoes. Thirty-three on Metacritic. EW‘s critics roundup called it “Jessica Chastain’s worst movie in a long time.” Doug Jamieson at The Jam Report dubbed it “truly dreadful,” describing “an excruciating parade of ineffective jump scares, woeful CGI, and increasingly nonsensical storytelling” — and noted that by the “ludicrous finale,” his audience had “abandoned any pretense of fear and erupted into laughter.” Peter Gray at The AU Review went with “more silly than scary,” filing it as “Insidious-lite.” The warning signs were there in hindsight, too: Universal held the review embargo until Thursday previews in New York and LA, with no advance US press screenings at all. Studios don’t hide movies they’re proud of.

The jump-scare discourse deserves its own paragraph, because it’s genuinely funny. Savage boasted to EW that the film packs around 50 jump scares. The New York Post‘s Johnny Oleksinski counted exactly 22 — and wrote that bragging about it is “like bragging you cooked a donut with a ton of trans fat.” I’m sorry, that’s one of the great put-downs in the history of film criticism, and I will be thinking about it for the rest of my life.

But here’s where I pump the brakes, because a Harper Nevar verdict doesn’t just pile on. Buried in the wreckage, a few critics found real bones: “genuinely unsettling moments,” “plenty of sinister moments to look forward to,” and one glorious dissenter who called it “bonkers fun” 3am viewing — “pure mess and masterfully cringe,” meant as a compliment. Chastain herself is never phoned in; even the harshest reviews concede she’s swinging. And let’s not forget the business side, because it’s the most horror-genre thing about this whole story: $3.5 million in Thursday previews, a projected ~$30 million opening, on a $19 million budget. The movie will make money. Cheap horror keeps winning even when the reviews say otherwise. There’s a whole economics lesson rattling around in that fact.

As The Hollywood Show put it — and I’m stealing this because it’s perfect — “Obsession this is not.” And that stings, because it comes from the same Blumhouse–Atomic Monster pipeline that gave us Obsession earlier this year — the little $750K monkey’s-paw miracle that conquered Hollywood. Same machine, wildly different result. That’s the cautionary tale here: a killer premise and a great trailer are a promise, not a movie.

So is it really that bad? The honest opening-weekend answer: it’s a genuine disappointment wrapped around a phenomenal idea, with a lead actress giving it everything and a third act that reportedly plays like comedy. Horror fans have had transcendent nights with worse-reviewed movies — some of my favorite theater memories started with “everybody said it was bad.” But go in clear-eyed: the trailer might be the best 150 seconds of the whole affair. And whatever you do, stay through the credits — yes, there’s a stinger, and no, I won’t spoil it.

Trivia & Facts

• The real “Other Mommy”: Josh Malerman has said the novel’s premise came from his own niece, who would say goodnight to “Other Mommy” — a presence the rest of the family couldn’t see. That’s also why it’s “Mommy” and not “Mother”: those were the kid’s exact words.
• The trailer that broke the summer: The first trailer ran exclusively ahead of Christopher Nolan’s The Odyssey in theaters, ambushing audiences who’d bought tickets for an epic and got a contorted Jessica Chastain under a kitchen counter instead. It went instantly viral.
• The 50-jump-scare boast: Savage told EW the film contains around 50 jump scares. The New York Post counted 22. Somewhere in that gap lives the whole movie.
• The hidden reviews: Universal held all US reviews until Thursday preview screenings in New York and LA — no advance press screenings anywhere. In this business, that’s never a good sign, and this time the sign was right.
• The money math: $3.5M+ in Thursday previews, tracking toward ~$30M opening weekend, on a $19M production budget. Whatever the critics say, the movie is already a financial win — the Blumhouse model working exactly as designed.
• Chastain’s horror record: Before this, Jessica Chastain’s horror picks were all Fresh — Crimson Peak sits at 72% on Rotten Tomatoes, and she headlined Mama ($28.4M opening) and co-starred in IT: Chapter Two. She usually chooses well. This is the outlier.
• The stinger: Yes, there’s a post-credits scene — the entity looks into the camera and shushes the audience. Mentioning it exists is all you get from me.
• Karen Allen! Yes, that Karen Allen — Marion Ravenwood herself — plays grandmother Ruth. Legends supporting legends.

Harper’s Extras

If Other Mommy leaves you hungry for the movie it could have been, here’s where to go next:

• Read the book: Malerman’s Incidents Around the House is reportedly darker than the film — including an ending the movie softened. If the premise hooked you, the novel is where it lives in its purest form.
• Watch Host (2020): Rob Savage’s actual masterpiece — 56 minutes, shot on Zoom during lockdown, scarier than movies with fifty times the budget. Proof of what he can do when everything clicks.
• The anti-Other Mommy: Our review of Obsession (2026) — the $750K Blumhouse–Atomic Monster miracle that did everything right. Same pipeline, opposite result. Night and day.
• More 2026 horror: Our review of Backrooms (2026) covers another big swing from this year’s horror class — and the James Wan wiki page traces the producer’s fingerprints across the modern genre.

Where to Watch

As of October 2026, Other Mommy (2026) is in theaters only — playing in roughly 3,200 US theaters following its October 9 release. No streaming or digital date has been announced yet; given the Universal pipeline, expect it to land on digital rental first, then streaming. Check JustWatch for the latest options in your region.

Frequently Asked Questions

Is Other Mommy (2026) based on a true story?

Not exactly — but the seed of it is real. Author Josh Malerman has said the idea for his novel Incidents Around the House came from his young niece, who used to say goodnight to “Other Mommy,” a presence nobody else in the house could see. The film builds its horror on that genuine childhood creepiness.

What is Other Mommy’s Rotten Tomatoes score?

Other Mommy opened to a 20% critics score on Rotten Tomatoes (from around 20 reviews on opening weekend) and a 33 on Metacritic — firmly Rotten. Audience scores were still settling as of opening weekend.

Is there a post-credits scene in Other Mommy?

Yes — Other Mommy has a post-credits stinger. Without spoiling it: the entity addresses the audience directly. Stay in your seat.

Where can I watch Other Mommy (2026)?

Other Mommy is currently in theaters only, playing in approximately 3,200 US theaters after its October 9, 2026 release. No streaming date has been announced yet.

Here’s the internet’s opening-weekend consensus in one breath: a phenomenal premise and a game Jessica Chastain can’t save a movie that mistakes jump scares for dread. The trailer remains the best 150 seconds of the whole affair — but horror fans have had great nights with worse. Just go in clear-eyed, and whatever you do, don’t let it inside your heart.

Update: We Finally Watched It — Our First-Hand Take

So here’s the deal: this section goes live the day we actually sit down and watch the thing. Until then, everything above is the opening-weekend consensus — the reviews, the numbers, the discourse — not a first-hand take. Consider this a promise and a placeholder: real impressions land here, and only here, once we’ve earned them.