S09 E01 · Episode 01
Signs of a PsychopathLoading player...
Season 910 Episodes
Signs of a Psychopath
Season 9This harrowing half-hour archive series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?
Investigation Discovery
US
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