Also, I notice how much rambling is going on, too many useless details - like when MR starts in, he can't get himself to stop talking. From truthaboutdeception.com:
People get suspicious when answers contain more details or information than was required. Essentially, providing too many details makes people wonder if the truth is being told.
This effect is called the "falsifiability heuristic."
Another thing I notice in the video is when asked why the focus is on him, he says, "He was last seen with me", "he was with me the night before", and then skips a beat, like he remembers he better say this too, "..and you know I saw him the morning that I left to go run my errands."