The moonstone brief: an inheritance thriller

"Ten people sleep on an island in the Pacific Northwest. Within a week, two of them are dead. Rachel Verinder inherits the diamond on her twenty-fifth birthday: thirty-six carats, yellow, locked in the safe in her own dressing room. By morning it is gone, and she will not say what she saw. Franklin Blake brought the stone and loved her badly for seven years. He cannot account for the night. Gabe Betteredge, a detective for twenty-one years before running the estate's security, finds everyone has a reason to lie: the dying mother, the pious aunt, the charitable cousin, the sister who films everything, the concierge doctor, the family lawyer, the cook nobody else would hire. The diamond has been stolen before. A man died on a temple floor in Sri Lanka for it, and The Hague wants it back. This is the case file. A modern retelling of The Moonstone by Wilkie Collins"--