The first poster for Other Mommy has been released, revealing a disturbing new look at Jessica Chastain and the sinister presence copying her appearance.

The poster splits Chastain’s face down the middle. One side shows a frightened woman with a tear beneath her eye, while the other carries an unnatural smile that immediately reveals something is wrong.

The design reflects the film’s central threat. Other Mommy follows a young girl whose family is targeted by a mysterious entity that looks exactly like her mother. The familiar face is meant to offer comfort, but the poster turns it into the source of the film’s horror.

The words “Your mommy won’t save you” appear beneath the title, suggesting the child will be forced to question whether the woman standing in front of her is really someone she can trust.

Other Mommy is directed by Rob Savage, whose previous horror work includes Host and The Boogeyman. The film is connected to Blumhouse and Atomic Monster, with Universal Pictures handling its theatrical release.

The poster does not reveal the creature’s full appearance. Instead, it relies on the split image of Chastain to show how closely the entity can imitate the child’s real mother while still allowing something threatening to break through.

Other Mommy opens in theaters on October 9, 2026.