Nearly a hundred years later, the disappearance of Agatha Christie in December 1926 remains one of the great mysteries of literary history. Investigators found her car at the edge of a gloomy pond, with no sign of the author. Neither her unfaithful husband nor her daughter knew of Christie's whereabouts, and a manhunt ensued. Eleven days later she reappeared in a spa in Harrogate, claiming amnesia and having no explanations for her time away. Here the author of Lady Clementine and The Only Woman in the Room takes us into Christie's world, reconstructing this notorious episode as a historical thriller.