Nancy Guthrie missing: Forensic scientist encourages new investigative approach since case 'isn't cold yet'

TUCSON, Ariz. — One criminal expert said even though the investigation into Nancy Guthrie "isn't cold yet," the "best" forensic scientists should go into her house and "scrutinize" everything inside.

Forensic scientist Peter Valentin made the comments Friday on Fox News' "Crime and Justice" podcast with Donna Rotunno while discussing Nancy Guthrie's disappearance. Investigators continue to search for Nancy Guthrie as she has been missing for more than three weeks. Guthrie was forcibly taken from her Tucson...