Genealogy expert CeCe Moore explained how a technique used to catch Rex Heuermann could work again.

Jen Coffindaffer had strong words for Sheriff Chris Nanos amid news that a private DNA lab sent evidence to the FBI.

A hair sample recovered at Nancy Guthrie's home is being analyzed by law enforcement.

Expert discusses samples removed from Savannah Guthrie mom's house.

It appeared similar to those worn by the masked individual caught on video outside Nancy's house.