#42. Leopard Society

For the past 150 years, members of the Leopard Society in West Africa dressed in leopard skins and brutally murdered over six-dozen victims. The murders were so gruesome that at first, it was speculated actual leopards caused these deaths. It was later discovered that these killings were part of a cannibalistic ritual that involving the distillation of an elixir from the boiled blood and organs of the victim.