Social Media Sleuths: Help and Hazard

Investigators found DNA at Nancy Guthrie’s house that doesn’t belong to her or those close to her, officials said. It’s being tested, along with several gloves found as far as 10 miles away from the residence. Anderson discusses the new developments with CNN's John Miller, former FBI Deputy Director Andrew McCabe, former FBI special agent and crisis negotiator Richard Kolko and former NYPD detective David Sarni.

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