In Pursuit of Evil Most Evil : Season 2 Episode 20

How do you track a killer? When a homicide is discovered, police must consider every possible motive and suspect if they are to bring the perpetrator to justice. Detectives must delve into the criminal mind in hopes of identifying a killer and preventing future acts of violence. In this hour, Dr. Michael Stone, forensic psychiatrist at Columbia University examines the process involved in identifying and capturing vicious killers.