The story of New York City's first medical examiner, Charles Norris (1867-1935), and his chief toxicologist, Alexander Gettler (1883-1968), who pioneered the use of forensic science to explain violent and suspicious deaths. Included: remarks from renowned medical examiners Marcella Fierro and Michael Baden; and author Deborah Blum ("The Poisoner's Handbook"). Oliver Platt narrates.