A dark house.An isolated island.Strange dreams and even stranger visions . . . Jack is spending the summer on a private island far from modern conveniences. No Wi-Fi, no cell service, no one else on the island but a housekeeper and the two very peculiar children in his care. The first time Jack sees the huge black mansion atop a windswept hill, he senses something cold, something more sinister than even the dark house itself.Soon, he feels terribly isolated and alone. Yet he is not alone. The house has visitors-peering in the windows, staring from across the shore. But why doesn't anyone else see them . . . and what do they want? As secrets are revealed and darker truths surface, Jack desperately struggles to maintain a grip on reality. He knows what he sees, and he isn't crazy. . . . Or is he?From nationally acclaimed author Francine Prose comes a mind-bending story that will leave you realizing how subtle the lines that separate reality, imagination, and insanity really are.