For almost two years from May 1981 through December 1982, a crew of serial killers hunted down as many as 20 victims in the city of Chicago and surrounding suburbs. Who were they? Who were their victims? Why have most people never heard of this crew? What was their motivation? How did they get caught? Where are they now?

Ray Johnson, also known as Chicago’s History Cop, is a former criminal investigator, author, historian, and lecturer. He is the owner and founder of Johnson Research Services and since 2005 has conducted historical research for television production companies, documentarians, authors, attorneys, and family historians. He has been featured on television shows and documentaries on Discovery ID, History Channel, PBS, BBC and has appeared on numerous local television shows and print media.