"Ingeniously shocking — and incredibly thought-provoking." —The New York Times Book Review"A gripping tale that reads like a Sherlock Holmes novel set in a broken future." —NPRFrom the bestselling author of The 7 1/2 Deaths of Evelyn Hardcastle and The Devil and the Dark Water comes an inventive, high-concept murder mystery: an ingenious puzzle, an extraordinary backdrop, and an audacious solution.Solve the murder to save what's left of the world.Outside the island there is nothing: the world was destroyed by a fog that swept the planet, killing anyone it touched.On the island: it is idyllic. One hundred and twenty-two villagers and three scientists, living in peaceful harmony. The villagers are content to fish, farm and feast, to obey their nightly curfew, to do what they're told by the scientists.Until, to the horror of the islanders, one of their beloved scientists is found brutally stabbed to death. And then they learn that the murder has triggered a lowering of the security syst