It Won't End Well: Things Go South In New Red Band Trailer For Jeremy Saulnier's 'Green Room'

Having seen Jeremy Saulnier's upcoming thriller "Green Room," I'll warn you straight off the top — don't watch this trailer. It spoils a few pretty great moments of gore, and some little twists of plot too. Will it ruin the movie? No, but it's the kind of flick you want to watch knowing as little as possible.

READ MORE: Cannes Review: Jeremy Saulnier's 'Green Room' Starring Anton Yelchin, Imogen Poots & Patrick Stewart

The latest from the director of "Blue Ruin" stars Patrick Stewart, Anton Yelchin, Imogen Poots, Alia Shawkat, Joe Cole, Callum Turner, Mark Webber, Eric Edelstein, Macon Blair, and Kai Lennox, and follows a down-on-their-luck punk band who find themselves in way over their head when they witness a murder following a gig at a venue run by skinheads. There will be blood. Here's the official synopsis: 

GREEN ROOM is a brilliantly crafted and wickedly fun horror-thriller starring Patrick Stewart as a diabolical club owner...