
Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.

When a young woman is out for a run, she is brutally attacked and raped by a stranger, police use groundbreaking genetic genealogy to identify the perpetrator.

In 2010, Sherry Black is found stabbed to death in her bookstore in Salt Lake City, Utah.

Police solve the decades-old cold case of Clare Holman through new advancements in DNA technology.

19-year-old Janet Stallcup is murdered in 1976; decades later, cutting-edge technology breaks the case open.