Most Evil, Season 1

This is a countdown of the "most evil" serial killers based on an "evil" matrix developed by eminent Columbia University professor Dr. Michael Stone. Stone is a forensic psychiatrist and personality expert, who developed "The Stone Scale," also known as the "Gradations of Evil." The scale uses forensic analysis to give a score between 1 and 22, indicating just how evil a particular individual is. Based on this new "index of depravity," this landmark documentary forensically deconstructs the wicked deeds and psychological make-up of the world’s most notorious serial killers and psychopaths, using the results to count down from ten to one the most evil human beings of our times. Who will be in the ten? And of the ten, who will be calculated Most Evil?