Investigators collected someone else's DNA from JonBenét’s fingernails and her underwear. Ultimately, the docuseries calls into question the validity of the DNA testing, but it had been previously determined that neither Patsy, John, nor Burke matched it.

"I truly believe this is one of the most brutalized families in American history," says Joe Berlinger of the late Patsy, John and Burke Ramsey, who have all been accused in the 1996 murder of the 6-year-old pageant queen.

Who Killed JonBenét Ramsey” is introducing a new generation to the mysterious 1996 killing of a child pageant star.