If you know, you know. If you don't, then when you get the THAT scene in Bone Tomahawk (2015), you're gonna know. But this flick isn't all about that one scene. The horror is wrapped in an extremely solid Western deftly acted by a tremendous cast. It's also absolutely insane and will have you peeking through the gap in your fingers more than once.

Take any movie about a posse heading out of town to rescue one of their own, mix it with a good dose of The Hills Have Eyes, and throw in a generous pinch of body horror and you're in for a horror movie marathon gem that nobody will see coming. 

Cast includes: Kurt Russell, Patrick Wilson, Matthew Fox, Richard Jenkins, and Lili Simmons.