Static (2012)

I was pleasantly surprised by this film. It manages to keep its surprise until the end, at least it did for me. A couple are seeking to get over the death of a child and have moved out to the sticks. A young woman knocks their door one night claiming to have broken down and that there are a gang of people after her. They bring her into their home and the husband immediately trusts her but his wife is more suspicious. They do indeed see the people who are tying to find them in their home, they are wearing strange masks.
The twist in the story is the same as The Sixth Sense from 1999. This 2012 film didn't get very positive reviews when it was released but it's not a terrible film, its just not a classic either.