Nova: Season 40, Episode 2

40 - 2: Forensics on Trial

There is a startling gap between the glamorous television world of "CSI" and the gritty reality of the forensic crime lab. With few established scientific standards, no central oversight and poor regulation of examiners, forensics in the U.S. is in a state of crisis. NOVA investigates how modern forensics, including the analysis of fingerprints, bite marks, ballistics, hair and tool marks, can send innocent men and women to prison