417 - The Slavemaster: Serial Killer John Edward Robinson

This one is a doozy! John Edward Robinson may be the most intelligent serial killer I've ever come across. This guy fooled so, so many people with over 40 years of brazen crimes. Doctors, psychiatrists, detectives, and so, so many victims. In addition to being a serial killer, this BDSM-obsessed dirtbag, scammed hundreds if not thousands of people for four decades.