It was the crime that gripped the nation - a bright, beaming, 6-year old beauty queen is mysteriously murdered in her very own home the day after Christmas in 1996. Investigators navigated false leads, a heavily compromised crime scene and a maze of finger-pointing. But now, 20 years later, Investigation Discovery (ID) in an unprecedented partnership with Weinstein Television, Jupiter Entertainment and American Media, Inc. (AMI) - parent company to RadarOnline and The National ENQUIRER, who have closely followed every lead and every step of the case - sheds new light on the still-unsolved case of who killed JonBenét Ramsey. In a three-night television event beginning Monday, September 12 at 10/9c, ID rips this cold case open with JonBenét: An American Murder Mystery chronologically reexamining the evidence to challenge long-held beliefs at the center of this enduring mystery.