Other Mommy looks to make lots of money for Universal when it debuts October 9th. Based on the 2024 novel by Josh Malerman (who also wrote the source material for the Netflix hit Bird Box), Jessica Chastain stars in the supernatural horror flick. The supporting cast includes Jay Duplass, Arabella Olivia Clark, Dichen Lachman, Arian Moayed, and Karen Allen. Rob Savage, maker of 2023’s ambivalently received The Boogeyman, directs.

She may be an Oscar winner, but Chastain is no stranger to the genre with Mama and It Chapter Two in her filmography. Scary movies have been hot in 2026 and a genuinely unsettling trailer should help Mommy score an easy #1 debut.

This should double the $12 million that greeted Savage’s Boogeyman and it could have room to spare. I’m projecting it’ll premiere with a mid to high 20s start.

Other Mommy opening weekend prediction: $28.2 million