Josh Brolin, Julia Garner and more star in the trailer for the upcoming horror movie 'Weapons' from 'Barbarian' director Zach Cregger, in theaters Aug. 8

Julia Garner is caught in Zach Cregger's twisted trap of a horror film, "Weapons." The "Fantastic Four: First Steps" actress plays an elementary school teacher whose entire class, sans one student, is missing under eerie circumstances.

Brolin stars alongside Julia Garner and Alden Ehrenreich in Cregger’s sophomore feature. The cast also includes Benedict Wong, Austin Abrams, Amy Madigan, Cary Christopher and June Diane Raphael. It follows the disappearance of a group of school children in the middle of the night in a small Florida community.