Stephen Wade is a freelance writer specializing in the history of crime and the law in Britain and Ireland. He has written fourteen true crime and crime history books, including Tracing Your Police Ancestors and Tracing Your Criminal Ancestors. His history of detectives, Plain Clothes and Sleuths, was published in 2007 and he is currently completing a history of the City of London Police. He also teaches crime history at the University of Hull and, as a visiting lecturer, at Oxford. He has contributed to Family Tree Magazine, Ancestors and other periodicals.