Lights Out (Blu-ray release 2016-10-25) is a very competent jump-scare horror movie made by a first-time director. The simple plot involves an evil being, who is powerful in the dark but fears light, haunting a sister and her little brother. Yet the possibly crazy mother considers that evil thing as a friend.
This movie succeeds because its pacing is good, it incorporates the unique implications of light and darkness to create effective scares, as well as nice ideas about using a smartphone and a certain remote control to survive. I also love that it has a complete closure – not even a slight hint of remaining evil at the end. Most importantly, the major characters do not do stupid things.