Maurice Possley is a Pulitzer Prize-winning journalist and author of three non-fiction books. Ryan cited the reportage of Possley and his colleagues at the Chicago Tribune when he declared the moratorium and emptied death row. Possley is now senior researcher for the National Registry of Exonerations, a national database of more than 2,500 wrongful convictions maintained by the University of Michigan Law School, Michigan State University College of Law and University of California Irvine Newkirk Center for Science & Society.