Almost 20 years after the death of 6-year-old JonBenet Ramsey, her brother will speak publicly for the first time about the case that gripped a nation on “Dr. Phil,” the show’s website announced Monday.

Burke Ramsey, 29, is set to speak to television personality Phil McGraw in an exclusive three-part series that will air in September.

The release promised “never-before-heard details,” about the cold case, in which no charges have ever been filed.

“Speaking out publicly for the first time, JonBenet’s 29-year-old brother, Burke, reveals what he knows about his sister’s mysterious murder in a ripped-from-the-headlines exclusive interview with Dr. Phil,” the news release reads. “After 20 years, it’s finally time for answers.”

The series will air on Sept. 12, 13 and 19.

JonBenet Ramsey was found dead Dec. 26, 1996, in the basement of her family’s Boulder home, 755 15th St. — which is now 749 15th St. — several hours after Patsy Ramsey called 911 to say her daughter was missing and that a ransom note had been left behind.

On Oct. 13, 1999, more than a year after the case went to the grand jury, then-DA Alex Hunter announced that the grand jury investigation had come to an end and that no charges would be filed due to a lack of evidence.

But the grand jury had secretly voted to indict the John and Patsy Ramsey on charges of child abuse resulting in death and accessory to a crime. Hunter refused to sign the indictments and prosecute the Ramseys.

Patsy Ramsey died in 2006.

Mitchell Byars: 303-473-1329, byarsm@dailycamera.com or twitter.com/mitchellbyars.