**"Other Mommy" has no critic reviews yet ahead of its October 9 wide theatrical release, so trader sentiment rests on pre-release indicators like trailer performance, cast strength, and horror genre norms.** The Blumhouse-Atomic Monster production, directed by Rob Savage with James Wan producing and based on Josh Malerman’s novel, features Jessica Chastain in a dual role as a mother and the sinister entity. Recent second trailer and featurette releases have generated solid online buzz and views, while Savage’s prior genre work and the studio’s track record for commercially viable but unevenly reviewed horror shape expectations. Scores for similar mid-budget horror entries frequently land in the mid-50s to low-70s on the Tomatometer, with critical consensus hinging on execution, scares, and originality once reviews post-release.