I sincerely believe that Burke is saddled with the responsibility of KNOWING what happened to JB that night, and not being able to tell anyone. There are statements he made that totally go against what both JR and PR said, like whether JB walked in the house that night or if she was carried because she was "zonked". That poor kid.... he has to ATLEAST know that what his parents said happened doesn't coincide with what he remembers. And if that was really him on the 911 tape, he knows much more. I am sure, even if he didn't witness it, that he knows way more than he ever said. Do you think he will ever say anything? You'd think it would make him end up in therapy someday, at the least!