The release of filmmaker Rob Savage’s Other Mommy is being delayed from May 8, 2026, to Oct. 9, 2026, Universal announced Tuesday. Rob Savage is the bold genre director whose credits include Host and The Boogeyman.

Horror maestro James Wan of Atomic Monster is producing the horror pic — in association with Spin a Black Yarn for Universal Pictures — whose high-profile cast includes Jessica Chastain, Jay Duplass, Arabella Olivia Clark and Dichen Lachman. Atomic is home to some of the most successful horror and franchises in recent memory, including The Conjuring, Insidious and Saw (Wan’s genre label is part of the Blumhouse horror empire). The screenplay is from WGA award winner Nathan Elston, writer for the Emmy-winning sensation Succession. 

The Universal release is adapted from the New York Times bestselling novel Incidents Around the House by Josh Malerman. It follows a terrifying, supernatural trip into the darkening world of a young girl as her family, and their home, are haunted by a sinister entity determined to take up residence inside her. But first, the entity needs to persuade her to let it in.

Executive producers are Michael Clear, Judson Scott, Macdara Kelleher, Savage, Malerman and Ryan Lewis, with exec Alayna Glasthal overseeing the film for Atomic Monster.