The brother of JonBenet Ramsey, a then-six-year-old child beauty queen from Colorado, broke his silence to Dr. Phil McGraw, 20 years after Ramsey was found dead in her Boulder, Colorado home.

McGraw and Megyn Kelly discussed Burke Ramsey's interview with the famed psychologist.

"She was 6, he was 9 at the time.  His parents said he weighed 60 lbs.  this young girl was sexually assaulted. She had her head bashed in. She was strangled with a cord with a slipknot tied to it," Kelly said.

"And a judge said it was not Burke Ramsey--  It wasn’t anybody in that house.  And yet his demeanor was so bizarre with you, it already has people wondering 'what's going on there'," she said to McGraw.

"The missing link in that 20 years has been Burke Ramsey, because he was the one person known to be in that house the night of the murder that has never spoke in public," McGraw said.

At the time of the 1996 murder, there were allegations made against the Ramsey's parents, John and Patsy, as well as Burke.

Because the family--instead of opening themselves up for "polygraphs and DNA" tests-- lawyered-up, McGraw said, "a seized mentality set in, and Burke was held back from the media."

"So for 9 years until he reached his age of majority--at that point he decided to go off-the-grid, and he is socially uncomfortable...and isolated."

In the interview, McGraw told Burke Ramsey: "I think people are reacting to the fact that you seem unbothered by this."

"I would cry out of nowhere. At some point you have to move on. Might've been the other end because I didn't really get it," Ramsey told McGraw.

McGraw said that in the interview, he also asked Ramsey "straight-up" whether he murdered his sister or whether a family member, or someone else, killed JonBenet.

Watch the full clip above and let us know what you think in the comments.