Bruce McArthur was a genial landscaper who occasionally worked as a mall Santa. He was also convicted of murdering eight men and hiding several of their bodies in planters.
Through his work with Dr. Al Carlisle, Manny Cortez was able to trace his violent roots to a book he found as a child that depicted violent acts against women.
When Ed Gein was suspected of killing a hardware store owner in 1957, cops not only found her decapitated body while searching his Wisconsin farm — but the bones, skin and skulls of other corpses fashioned into household items.