Paul Holes

Holes spent twenty-seven years on cold cases in California and is among the investigators who identified the Golden State Killer, by building a family tree from crime scene DNA through a public genealogy database, a technique nobody had used that way before and which has since closed hundreds of cases. Unmasked covers the work and what it cost him: the marriages, the drinking, the inability to stop. He is careful about the privacy questions the genealogy method raises, which carries more weight coming from the man who opened that door.