Oak Park, Illinois - Thursday, July 7, 2016
Please note: He prefers to go by Bill, though he is known as William J. Martin in his work and writings.
Bill Martin, a former Assistant State's Attorney and the Chief Prosecutor of mass murderer Richard Speck, poses for a portrait in his office in Oak Park, Illinois, on Thursday, July 7, 2016. With journalist Dennis L. Breo, Martin co-authored the book The Crime of the Century about the Speck murders and trial.
Photo by Alyssa Schukar for NPR