In honor of Halloween, let’s discuss evil. Dr. Michael Stone is a man obsessed with it, and his obsession makes for an engaging cable show on 
Investigation Discovery. Most Evil has cracked open the tumultuous minds of the most notorious criminals in modern times. Dr. Stone is relentless in his search for root causes, motivations, predilections – anything that may help explain why someone commits an act of evil.
Using a tool he devised, the scale of evil, Dr. Stone ranks each subject from one to 22, with the highest numbers reserved for perpetrators of the most heinously evil acts imaginable. Dr. Stone is exceptionally calm and reserved, but there are times when even he is thrown by what he learns when peering into the mind of a killer.
Preview from an episode about delusional killers below…
David DiSalvo is a science, technology and culture writer whose work appears in Scientific American Mind, Psychology Today and a variety of other places.
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