Jill Paton Walsh, born in 1937, is the author of five novels for adults: the fourth of these, Knowledge of Angels, was shortlisted for the Booker Prize. Before writing for adults she made a career as a writer of children's books and has won many literary prizes. In addition she is the author of two crime novels: The Wyndahm Case and A Piece of Justice, which was shortlisted for the Crime Writers' Association Gold Dagger Award. These novels feature Imogen Guy, the college nurse at St Agatha's College, Cambridge, as her heroine.