The most intelligent serial murderers can be the most dangerous. Edmund Kemper, Unabomber Ted Kaczynski, and Randy Kraft all showed genius-level IQs, and their extraordinary intellect allowed them to kill for years-sometimes decades-without getting caught. Where do the lines of evil and intelligence intersect? Armed with new scientific discoveries on early brain development, Dr. Stone analyzes Kemper, Kaczynski, and Kraft to find out what made these killers use their cunning for crime.