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Other Mommy

FILM · 2026

Other Mommy

12 archived facts 3 topics

Bela, an 8-year-old girl growing up in a home strained by marital problems, is confronted by a sinister presence that emerges from her closet. She calls it "Other Mommy," and it grows ever more threatening to her and her family.

  • Other Mommy — production image

12 Interesting Facts About Other Mommy

Interesting Facts (7)

  1. #001

    The surest sign that Chastain had landed on the right face for Other Mommy came when a child strayed into the costume trailer, caught sight of her expression and screamed on the spot.

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  2. #002

    The séance scene was meant to look as though shot under ultraviolet light, but real UV carries radiation risks with prolonged exposure, so the crew recreated the effect with Astera Hyperion, Titan and Helios tubes pushed as deep into the blue/violet spectrum as possible without emitting actual UV.

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  3. #003

    The upside-down room's props included plastic and rubber versions of glassware, plants, ceramics and textiles, and the champagne glasses were built so the liquid appeared upside-down inside them once mounted on the ceiling.

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  4. #004

    The inverted room was constructed slightly taller than the original it replicated, so the camera could shoot the floor as ceiling and the ceiling as floor entirely in-camera, with no green screen.

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  5. #005

    Other Mommy was played in four escalating versions by different performers: Jessica Chastain as the first, Helen O'Dea as the second, Lucy Johnson as the third and Hayley Spelman as the fourth.

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  6. #006

    The beach sequence was shot near the summer solstice, leaving the crew only a narrow stretch of genuine darkness in which to film the night scenes.

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  7. #007

    For the séance scene, the costume department made two versions of every outfit: one that looked normal under visible light and a matching one that amplified the simulated UV fluorescent effect.

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Behind the Scenes (4)

  1. #008

    In the beach sequence, once Bela's heart-rate monitor starts flashing red, every LED source on set turns red and pulses in time with her quickening heartbeat, with a dimmer board operator coordinating all fixtures at once.

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  2. #009

    Grandma Ruth's house was shot at Glenmaroon House, a former Arthur Guinness property in Dublin, picked because its grandeur reflected the character's backstory as a widow living beyond her means.

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  3. #010

    Hayley Spelman, a former professional volleyball player in her first film role, performed a scene on stilts so that Other Mommy would loom far above Bela, sharpening the character's unsettling physical presence.

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  4. #011

    The stunt performers playing Other Mommy wore prosthetic masks made from various silicones engineered to stretch like elastic, letting them physically show the character's deteriorating moments.

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Deeper Meaning (1)

  1. #012

    Jessica Chastain worked out Other Mommy's physical expression in front of a mirror, landing on an unblinking smile that sent tears running down her cheeks at the same time, an unsettling mix of warmth and threat.

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Sources & editorial notes

Reference databases

  • IMDb IMDb title page (trivia)

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