Jill Paton Walsh, whose work includes the Booker Prize-nominated novel "Knowledge of Angels,""" took up the mantle of Dorothy L. Sayers with her "New York Times" bestselling completion of the Lord Peter Wimsey mystery, "Thrones, Dominations," followed by "A Presumption of Death." She is also the author of three previous Imogen Quy mysteries: "The Wyndham Case, A Piece of Justice "(which was shortlisted for the Crime Writers' Association Gold Dagger Award), and "Debts of Dishonor," In 1996 she received the Commander of the Order of the British Empire, and was elected a fellow of the Royal Society of Literature.