Most Evil is an American forensics television program on Investigation Discovery presented by forensic psychiatrist Michael Stone of Columbia University during seasons 1 and 2 and by forensic psychologist Dr. Kris Mohandie during Season 3. On the show, the presenter rates murderers on a scale of evil that Stone himself has developed. The show features profiles on various murderers, serial killers, mass murderers and psychopaths.
https://en.wikipedia.org/wiki/Most_Evil