The World's Most Evil Psychopaths: Horrifying True-Life Cases of Pure Evil

Jeffrey Dahmercommitting his first murder with a fear of being left alone, then went on luring young boys and keeping souvenirs of their skulls.

Ted Bundywho appeared to be a generous and charming young man with a brilliant future started with a petty crime and worked his way up to the murder of young women.

John Wayne Gacywas a pillar of the community, organizing themed block parties and entertaining as Pogo the Clown, but his early transgressions began to take on more and more sinister form...