Whistle

“Don't blow it.”

A group of students in an old house find an Aztec death whistle, a relic carved bone that emits a sound no living ear was meant to hear. When Chrys Willet (Dafne Keen) and her friends blow it out of curiosity, they each summon a vision of their own death, and it begins to hunt them down. Corin Hardy films the hunt in real time, bodies moving through cramped rooms with nowhere left to run.