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
The Darkness Outside Plot Summary and Synopsis
8 year old Briana vanishes from her bedroom without a trace one night. Her aunt Madeline and others involved in the ensuing search fall into harm’s way as the mysterious forces behind Briana’s disappearance are revealed.
Source: Wikipedia (CC BY-SA 3.0).