Built by a madwoman during the Victorian era, Lake House is a 160-room mansion in the Adirondacks with stairways that lead nowhere, bizarre rooms designed to distort the senses, endless series of mazelike halls—and a century-long history of violent deaths. Lauren Montgomery, her son Garrett, and her new rock star husband Stephen Ransom have just arrived at Lake House, anticipating a long and relaxing summer. But what they don't know is that their rental home is actually a labyrinthine puzzle at whose center lurks something unspeakably evil . . .