His Cousins' DNA Test Solved a 13-Year-Old Murder

A killer thought he had gotten away with it. No witnesses. No confession. No match in any database. For thirteen years, the murder of Sarah Yarborough remained one of those cases that haunted investigators but seemed impossible to crack.

Then a single cup of coffee changed everything.

This video tells the full story of how detectives in Federal Way, Washington cracked a cold case that had sat untouched for over a decade, using a technique so new that almost no law enforcement agency had tried it before. By uploading an unknown killer's DNA to a public genealogy website, investigators were able to trace distant relatives who had voluntarily submitted their own genetic information, never knowing they were about to help solve a murder.

What followed was a painstaking process of building a family tree in reverse, working backward through hundreds of people to find the one man who fit every piece of the puzzle.

Patrick Nicholas never gave his DNA to anyone. He never signed up for any ancestry service. He never made that mistake. But someone in his extended family did, and that was enough.

The case of Sarah Yarborough is more than just a crime story. It raises questions that are still being debated today. When you submit your DNA to trace your heritage, who else are you exposing? What are the limits of using public genetic databases in criminal investigations? And how many other cold cases could be solved the same way?

This is the story of a breakthrough that changed forensic investigation forever, and the killer who walked free for thirteen years because of a mistake he never even knew had been made.

Видео His Cousins' DNA Test Solved a 13-Year-Old Murder канала The Unsolved