Horror fans have a new theatrical event to mark on the calendar. Other Mommy (2026) is a horror film from Blumhouse and Atomic Monster, produced by James Wan and directed by Rob Savage (Host, The Boogeyman), with Jessica Chastain headlining the cast in a dual role.
Adapted from Josh Malerman's novel Incidents Around the House, the film opened in theatres on October 9, 2026 through Universal Pictures. Below is everything to know about the Other Mommy cast, music director, songs and release date.
Other Mommy Cast
Jessica Chastain — Bela's mother and "Other Mommy" (dual role)
Arabella Olivia Clark — Bela
Jay Duplass — Daddo
Dichen Lachman
Arian Moayed
Karen Allen
The film is directed by Rob Savage from a screenplay by Nathan Elston. It is produced by James Wan as a Blumhouse–Atomic Monster production, made in association with Spin a Black Yarn.
Other Mommy Music & Songs
Music director / composer: Patrick Jonsson (The Boogeyman, Scrapper).
As reported by Film Music Reporter, Back Lot Music released the film's original motion picture soundtrack — a 25-track original score — digitally on October 9, 2026, the same day the film arrived in theatres. A vinyl edition is being issued through Waxwork Records.
Please note: the Other Mommy album is an original-score release made up of instrumental cues written for the film. The titles below are the official score cue titles — they are not sung songs.
- WTF
- Boats
- Vulchy!
- Other Mommy
- Can I Go Into Your Heart?
- Shhh
- That's Too Many Fingers
- They Don't Care Like I Do
- Sparkly Case
- I Want Uncle Frank to Go Away
- Red Eyes
- Tunnels
- Ballpit
- She Wishes You Never Existed
- Exactly Where I'm Supposed to Be
- The Experts Arrive
- Seance
- Shelter
- We Left the Lights On
- Weapons
- Barricade
- Origin
- Just a Hug Bela
- You're Broken
- Other Mommy Reprise
For more film-music coverage, read our guides to Toxic (2026) cast, songs & music directors and The Social Reckoning (2026) soundtrack.
Other Mommy Release Date
Release date: October 9, 2026 (theatrical)
Distributor: Universal Pictures
October 2026 brought several other notable releases to cinemas — see Tenzing (2026) release date, cast & trailer and Ranabaali (2026) cast, trailer & release date.
Watch the Official Trailer
Watch the official Other Mommy trailer from Universal Pictures below:
Other Mommy FAQs
Q: When does Other Mommy release?
A: Other Mommy opened in theatres on October 9, 2026, distributed by Universal Pictures.
Q: Who stars in Other Mommy?
A: Jessica Chastain leads the cast in a dual role as Bela's mother and "Other Mommy," alongside Arabella Olivia Clark as Bela, Jay Duplass, Dichen Lachman, Arian Moayed and Karen Allen.
Q: Who composed the music for Other Mommy?
A: The original score was composed by Patrick Jonsson (The Boogeyman, Scrapper). Back Lot Music released the 25-track score album digitally on October 9, 2026.
Q: Is Other Mommy based on a book?
A: Yes. The film is adapted from Josh Malerman's novel Incidents Around the House, with a screenplay by Nathan Elston.
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