Universal Pictures and Blumhouse Atomic Monster release the first trailer for “Other Mommy,” a horror film starring Jessica Chastain. Multiple outlets report the trailer is already circulating online after it is shown in theaters, including as part of showings of Christopher Nolan’s “The Odyssey.” The film is directed by Rob Savage, who previously directed the horror film “Host.” The trailer centers on a sinister presence described as a closet entity and features disturbing encounters involving a young girl and her family. Other reporting characterizes the threat as a body-twisting doppelganger, while noting that the trailer is designed to build fear without revealing the full plot. The Hollywood Reporter also states that the movie is set to release in theaters on October 9. Across coverage, the focus remains on the trailer’s horror imagery and the return of Chastain to the genre, with audiences reacting strongly to the initial preview. All sources agree that the trailer launch is tied to the film’s wider theatrical rollout and that “Other Mommy” is an upcoming Universal/Bluhmhouse Atomic Monster production.