It Comes At Night (2017)
This isn't your standard zombie film, in fact, the real threat is the people that you learn not to trust in this film. Once a strange virus starts to spread and turn people into mindless, violent creatures, one family secludes themselves in a cabin in the forest to stay safe. After a period of time, another family discovers that they are there, and they want to be sheltered as well. This turns into a struggle of paranoia and distrust that ends with one of the most shocking twists in modern movie history.