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Second Trailer: Jessica Chastain In "Other Mommy"

Jessica Chastain plays both a mother and a sinister double in the horror film, which Universal says opens in theaters with about 50 jump scares.

  • Universal Pictures released the new trailer for Other Mommy, an anticipated supernatural horror film hitting theaters exclusively on October 9, 2026, featuring Oscar-winning Jessica Chastain in a dual role.
  • Based on the 2024 novel Incidents Around the House by Josh Malerman, the story centers on eight-year-old Bela, played by Arabella Olivia Clark, whose troubled household becomes frightening when a closet-dwelling entity visits her.
  • Filmmaker Rob Savage directs the feature, produced by James Wan through Blumhouse Atomic Monster, with supporting cast including Jay Duplass, Dichen Lachman, Arian Moayed, and screen legend Karen Allen.
  • Savage told Entertainment Weekly the story uses the supernatural double to explore motherhood, noting Ursula's identity has become 'splintered,' while the filmmaker jokingly estimated the movie contains around 50 jump scares.
  • Unlike recent genre hits Obsession and Backrooms, Other Mommy relies on literary origins rather than original scripts, aiming to deliver dread and paranoia as the entity attempts to replace Bela's mother Ursula.
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The other mother's new trailer, the disturbing horror film starring Jessica Chastain that arrives in the cinemas next October.

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Dark Horizons broke the news on Tuesday, September 15, 2026.
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