Vídeo : JonBenét Ramsey: Race Against Time, Who Is ‘Unknown Male 1’? – A New Diane Sawyer Investigation

It remains one of the country’s most haunting unsolved murders: 6-year-old JonBenét Ramsey found brutally murdered in her Boulder, Colorado, home. Thirty years since the horrific crime, questions continue to surround her death. Now, there's new evidence and the DNA sample known as Unknown Male 1.