Jessica Chastain Horror Trailer for Other Mommy Debuts

Oscar-winning actress Jessica Chastain returns to the horror genre in a chilling dual role, as the first trailer for the supernatural film "Other Mommy" was released on July 21, 2026. The film, from Universal Pictures, is scheduled for a worldwide theatrical release on October 9, 2026.

Chastain stars as Ursula, a mother whose family is terrorized by a sinister entity that emerges from her young daughter's closet and takes on her exact appearance. The entity, dubbed "Other Mommy" by the eight-year-old girl, Bela, played by Arabella Olivia Clark, creates a psychological nightmare as Bela struggles to distinguish her real mother from the malevolent doppelgänger. The trailer features the entity asking Bela, "Can I go inside your heart?" setting a deeply unsettling tone.

The official synopsis describes Bela as living in a home with marital problems, where the presence she names becomes increasingly threatening to her entire family. The trailer depicts mundane domestic scenes, such as preparing lunch, that quickly descend into horror, including a moment where the entity crawls from beneath a dinner table.

The project marks Chastain's first horror film since 2019's "It Chapter Two." Her...