Sage, at fourteen, grows up in turmoil in Nahant, Massachusetts. Her changing body, her parents' rocky marriage. When her cousin Patrick visits for the summer, his parents' divorce has given him a reckless anger. He insists they explore the creepy mansion in the woods. Nate, Sage's younger brother, is reluctant to approach the manor where a beloved teacher was found hanged months earlier. The children's great-great grandmother worked at Lakeluster House in a previous century and was under suspicion of shooting another servant. Now an old lady and her butler have moved in and the kids bring a welcome cake. Invited inside, Sage encounters a strange little girl who shows her the manor's dark secrets-sparking Sage's curiosity. Will the butler-a man with his own mysteries-throw them out for snooping? Who is real and who is a ghost? Was her relative guilty? And what danger lingers in the attic? Sage must gather her courage, risking her life to find out.