Happy birthday, Jill Paton Walsh.

British mystery and children's author Jill Paton Walsh turns 71 today. Creator of nurse sleuth Imogen Quy, Paton Walsh may be best known for taking on the daunting task of completing Dorothy L. Sayers's last Lord Peter Wimsey novel Thrones, Dominations (1998) and following up with A Presumption of Death (2002).