Summary: For decades psychiatry has been asking: what makes a psychopath? The list of possible explanations stretches back over centuries: demonic possession, trace metals in the body, bad mothering, violence on television, birth trauma. In Part 2 of this series, Mary O'Connell returns to an interview she did with a serial killer 20 years ago, to understand what motivated him and what insight can experts give us about the modern-day psychopath.
