True-crime researcher, Hollywood insider and 'Sisters in Death' author Eli Frankel breaks down why we're so fascinated by serial killers ...

Caroline Fraser’s new book “Murderland” connects the dots between the rise of lead in the atmosphere from smelting and gasoline and the prevalence of serial killers during the 1970s.

Netflix’s new documentary reveals death row interviews with Aileen Wuornos, one of the most famous female serial killers in American history.