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Full Program: Experts investigate whether a portrait sold for about $20,000 in 1998 is a lost Leonardo. 52:53
Learn how fingerprinting technology has evolved; making matching fingerprints easier. 01:30
The forensic pathologist and spokesman for ACFEI talks with FRONTLINE about certification. 03:20
(Warning: graphic images) FRONTLINE, ProPublica and NPR examine death investigation. 03:24
Full Program: A system is in disarray and mistakes are literally being buried. 53:41