SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!
SPOILERS AHEAD
Knock At The Cabin Plot Summary and Synopsis
A horror film about a group of friends who spend the weekend at a remote cabin in the woods, unaware that they are being stalked by a masked killer.
Source: Wikipedia (CC BY-SA 3.0).