Most Evil (2006)

Episode Overview

Revenge often drives individuals to commit murder, but the motivations of those who seek to harm anyone associated with their target are far more complex and perilous. "Mad Dog" McCafferty murdered three people in retaliation for his son's death, while Anatoly Onoprienko, left in an orphanage by his father, turned his wrath on any joyful family he encountered. What fuels such violent retribution? Dr. Stone examines the psychology behind revenge, analyzing the behaviors of these killers in hopes of uncovering insights into their motives.