2018-01-10T03:00:00Zs at 2018-01-10T03:00:00Z on Investigation Discovery
2020-08-24T02:00:00Z
23m
1d 27m(63 episodes)
United States
English
Red Marble Media
Crime, Documentary
This 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?