It's been ten years since Anna left her home. During which she has haunted the rooms of her house like a ghost, too terrified to step outside. Anna's lifeline to the world is her window where she sits each day watching her neighbours. When the Russells move in, Anna is drawn to them. But one evening a frenzied scream rips across the silence, and Anna witnesses something no one was supposed to see. The most exciting debut thriller of the year!