Final Trailer Drops for Horror Film "OTHER MOMMY" Starring Jessica Chastain

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Jessica Chastain plays a mother and a sinister doppelgänger alongside Jay Duplass and Arabella Olivia Clark in the Blumhouse horror film.

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The final trailer has been released for OTHER MOMMY, a horror film starring Jessica Chastain in dual roles, set to open in theaters on October 9.

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From producer James Wan and Blumhouse Atomic Monster, the studio behind Backrooms and Obsession, the film comes from director Rob Savage and follows the darkening world of a young girl, Bela, who forms a relationship with a sinister entity in her home who looks uncannily like her own mother.

Academy Award winner Jessica Chastain (It Chapter Two, The Eyes of Tammy Faye) stars in dual roles as Bela's mother and as 'Other Mommy,' a manifestation of the entity. Jay Duplass (Transparent, Industry) plays Daddo, Bela's father, and Arabella Olivia Clark (The Housemaid, The Hand that Rocks the Cradle) plays Bela.

The supporting cast includes Actor Award nominee DICHEN LACHMAN (Severance), Emmy and Tony Award nominee Arian Moayed (Succession) and Karen Allen (Indiana Jones films).

Other Mommy is directed by Rob Savage (Host, The Boogeyman) from a screenplay by WGA award winner Nathan Elston, writer for Succession, based on the New York Times bestselling novel Incidents Around the House by Josh Malerman (Bird Box).

The film is produced by James Wan, p.g.a. (Saw, Insidious and Conjuring franchises) of Blumhouse Atomic Monster, and is executive produced by Michael Clear, Judson Scott, Rob Savage, Josh Malerman and Ryan Lewis .

Genre: Horror

Cast: Jessica Chastain , Jay Duplass, Arabella Olivia Clark, DICHEN LACHMAN , with Arian Moayed and Karen Allen

Directed by: Rob Savage

Screenplay by: Nathan Elston, based on the novel Incidents Around the House by Josh Malerman

Producer: James Wan, p.g.a.

Executive Producers: Michael Clear, Judson Scott, Rob Savage, Josh Malerman, Ryan Lewis

OTHER MOMMY opens in theaters October 9. Tickets are available via the official website .

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_Originally reported by [BroadwayWorld](https://www.broadwayworld.com/bwwtv/article/OTHER-MOMMY-Final-Trailer-Released-Horror-Film-Starring-Jessica-Chastain-20260915)._