Explore the dark psychology behind America's most dangerous criminals with this compelling five-part documentary series. Becoming Evil examines over 30 of history's most chilling unsolved serial killer cases, from Jack the Ripper to modern day, while highlighting the dedicated amateur investigators working tirelessly to bring closure to victims' families. With an estimated thousand active serial killers operating in the United States, this series provides unprecedented insight into their methods and motives. A gripping investigation into true crime's most perplexing mysteries.