A genetic genealogist who helped unmask the notorious Golden State Killer tells CNN’s Brianna Keilar how the technique could be used to track down Nancy Guthrie’s abductor.
DNA expert who unmasked Golden State Killer reacts to Guthrie case
A genetic genealogist who helped unmask the notorious Golden State Killer tells CNN’s Brianna Keilar how the technique could be used to track down Nancy Guthrie’s abductor.