Curled up for Christopher Nolan’s *The Odyssey* opening weekend, hundreds of moviegoers got a bone-chilling surprise: the first trailer for horror flick *Other Mommy*. Starring Jessica Chastain as a loving mom and her sinister doppelgänger haunting 8-year-old Bela, it’s directed by Rob Savage, scripted by *Succession*’s Nathan Elston, and produced by *The Conjuring* genius James Wan. Set to hit theaters Oct 9, the trailer debuted in theaters first before dropping online July 21. Ever had a random theater trailer scare you awake at night? Share your stories below!