Lights Out (2016)

Plot: In a textile factory, an employee named Esther encounters a silhouette of a woman when the lights are off, but cannot see it when the lights are on. She warns her boss Paul. After she leaves, Paul encounters the woman and notices that she will not come into the light. He is killed by the woman after she chases him through the factory. A short time later, a young woman named Rebecca is called into the school nurse's office because of her brother, Martin. Rebecca and Martin are half-siblings, sharing the same mom: Sophie. The nurse was unable to get in touch with Sophie to inform her that Martin has been falling asleep in class lately. An official from Child Protective Services questions Rebecca about Martin's living conditions. Rebecca tells the official Sophie has depression, and is taking antidepressants. Rebecca also tells the official that Paul was her stepfather, and that her real father ran away when she was a child..