Is ancestral DNA the answer to solving cold cases? In 1985, a barrel containing the bodies of a women and young girl were discovered in Bear Brook State Park. 15 years later, two more girls were discovered in another barrel just 300 feet away. The shocking case was finally solved thanks to ancestral DNA. | Investigation Discovery

“We just assumed that there was nothing. We buried a box of mementos,” says Ellen Niven. In December, Niven learned that the remains of her husband John, who died on 9/11, had been identified for the first time. "For [my son], it was uplifting, in a way, to realize that people had been working all that time to find any piece of his dad. And that of all the people that were blessed by this breakthrough, that it was his dad," says Niven. https://cbsn.ws/48VSMFp | 60 Minutes