A chilling tale of psychological suspense and an homage to the thriller genre tailor-made for fans: the story of a bookseller who finds himself at the center of an FBI investigation because a very clever killer has started using his list of fiction’s most ingenious murders. Years ago, bookseller and mystery aficionado Malcolm Kershaw compiled a list of the genre’s most unsolvable murders, those that are almost impossible to crack—which he titled “Eight Perfect Murders”—chosen…