The official trailer for the horror film "Other Mommy," starring Jessica Chastain, was released this Tuesday [1].
The project marks a significant collaboration between Chastain and director Rob Savage, utilizing a dual-role performance to explore themes of maternal terror. The film's arrival in the horror landscape follows a trend of psychological thrillers focusing on distorted family dynamics.
In the film, Chastain plays two distinct roles: the mother of a young girl named Bela and a sinister supernatural entity known as "Other Mommy" [2]. The plot centers on this entity as it threatens Bela and creates a nightmare for the family [1, 3].
Chastain is joined by co-stars Jay Duplass and Dichen Lachman [4]. The trailer, which debuted in July 2026 [5], provides a first look at the film's atmosphere and the central conflict between the two versions of the lead character.
"Jessica Chastain plays both a mother named Bela's mom and the sinister entity known as Other Mommy," a BroadwayWorld author said [2]. The production aims to blend supernatural horror with character-driven tension, a hallmark of Savage's directorial style.
"The first trailer for Rob Savage's new horror movie Other Mommy casts Jessica Chastain as a maternal monster destroying a family's life," a Collider author said [3]. Other critics said that Savage is diving headfirst into an unsettling story [3].
The film is scheduled to open in theaters worldwide on Oct. 9, 2026 [2, 5].
“Jessica Chastain plays both a mother named Bela's mom and the sinister entity known as Other Mommy.”
The casting of a high-profile actress like Jessica Chastain in dual roles suggests a production with significant budget and artistic ambition. By positioning the release for October 9, the studio is targeting the traditional pre-Halloween horror window to maximize theatrical attendance and capitalize on seasonal genre demand.
