This week, on a new episode of News 12’s Crime Files: We take you inside the mind of one of the most notorious serial killers in the tri-state area. Discover what sparked 17 gruesome murders and the evidence uncovered that led law enforcement officials to call him “pure evil.” Don’t miss “Joel Rifkin: An American Serial Killer” on a new episode of Crime Files, Friday at 9:30p on News 12.