My opinion of Burke’s interview is that his answers indicate a very confident person and what appears as awkwardness is his inability to connect emotionally. Markers of a potentially dangerous person. I also believe this case could be solved if two things had been carefully reviewed: the phone calls John made (and to whom) from the evening before until Burke is whisked away, and exactly what happened to Burke in the years after. I’ve never heard facts of either which seems very odd to me as they would be crucial in any comprehensive investigation. It’s likely tracking what happened to Burke would be difficult.