WATCH: Jessica Chastain is terrifying in trailer for Other Mommy

September 15th, 2026 by Marc Comments

From producer James Wan, one of the most influential architects of modern horror, and Blumhouse Atomic Monster, the studio behind Backrooms and Obsession, comes a terrifying trip from breakout genre director Rob Savage, into 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.


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The impressive supporting cast includes Actor Award nominee Dichen Lachman (Severance), Emmy and Tony Award nominee Arian Moayed (Succession) and screen legend 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 the Emmy-winning sensation 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.

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

Directed by: Rob Savage

Other Mommy only in theaters October 9

Check out the trailer:


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Marc is a self-confessed nerd. Ever since seeing Star Wars for the first time around 1979 he’s been an unapologetic fan of the Wars and still believes, with Clone Wars and now Underworld, we are yet to see the best Star Wars. He’s a dad of two who now doesn’t have the time (or money) to collect the amount of toys, comics, movies and books he once did, much to the relief of his long-suffering wife. In the real world he’s a graphic designer. He started Following the Nerd because he was tired of searching a million sites every day for all the best news that he loves and decided to create one place where you can go to get the whole lot. Secretly he longs to be sitting in the cockpit of his YT-1300 Corellian Transport ship with his co-pilot Chewie, roaming the universe, waiting for his next big adventure, but feels just at home watching cartoons with his kids….