John Robinson was a prolific serial killer and master manipulator who was able to get away with murder for at least two decades. He was a Slave Master for the International Council of Masters and his duties included securing women for the group to rape and torture. His total number of victims remains unknown but six bodies were found in barrels in various states of decomposition. What makes John an unusual serial killer is that he enjoyed torture and the BDSM lifestyle, but seemed to kill only for financial gain more than the pleasure.