Mr M is being watched. As a famous writer, he is no stranger to the limelight, although interest in his work has been dwindling of late. His print runs are smaller than they used to be, and so are the crowds at his bookshop signings. But there is someone still interested in Mr M and keeping an extremely close eye on him—someone whose own story bears more than a passing resemblance to the plot of Mr M’s bestselling thriller, in which a teacher has an affair with a student, only to be brutally murdered by the girl and her teenage boyfriend. In Mr M’s book, the body is never found—but in real life, bodies have an awkward habit of turning up.