The scene shifts rapidly from tense to gruesome in this new clip from "Sicario," the new drug-war drama by “Prisoners” director Denis Villeneuve.

The film stars Emily Blunt as idealistic FBI Agent Kate Macy, who’s recruited by a CIA official (Josh Brolin) to aid in the escalating war against drugs. Joining an elite government task force that’s led on a clandestine journey into Mexico by an enigmatic consultant with a questionable past (Benicio Del Toro), Kate is forced to question everything she believes in order to survive.

Opening Sept. 18 in select theaters and Oct. 2 nationwide, “Sciario” also stars Jon Bernthal, Daniel Kaluuya, Maximiliano Hernández and Jeffrey Donovan.