As she unpacks in her new bedroom Ella is irresistibly drawn to the big old house that she can see out of her window Surrounded by overgrown gardens barbed wire fences & 'keep out' signs it looks derelict But that night a light goes on in one of the windows & the next day she sees a girl in the grounds Ella is hooked The house has a story to tell She is sure of it Enter Thornhill Institute for Children & discover the dark secrets that lie within But once inside will you ever leave?