When the Lights Went Out (2012) - Jumpscare Guide

Plot

Yorkshire, 1974, the Maynard family moves into their dream house. It's a dream that quickly descends into a panic stricken nightmare as the family discovers a horrifying truth, a truth that will make the history books. The house is already occupied by the most violent poltergeist ever documented, a poltergeist that will tear you from your bed as you sleep and drag you helplessly into the darkness.