Jill Paton Walsh is the author of books for adults, young adults and children. Her novel "Knowledge of Angels" was short-listed for the Booker Prize. Her crime novels and mystery novels include "The Attenbury Emeralds", "A Presumption of Death", "The Wyndham Case" and "A Piece of Justice", which was shortlisted for the Crime Writers' Association Gold Dagger Award. With Dorothy L. Sayers, she was co-author of "Thrones, Dominations". Her novels for children and young adults include "The Green Book" and "A Parcel of Patterns". She lives in Cambridge, England.