The Face of Evil

To hunt down the most heartless of killers, investigators must carefully gather clues to build an accurate profile and there's always traces of the fiend somewhere left behind. Detectives often enlist the best specialized minds and techniques to help decipher the cryptic messages from the killer. From medical examiners, forensic psychologists, artists, botanists, ballistic experts, toxicologists and crime scene re-constructionists, every tool and skillset in the world is used to help police uncover The Face of Evil. (Discovery Networks)