Ardy, in response to your post above (too long to quote in a reply), as far as MR being as "dumb as a brick" and being capable of victimizing or manipulating a number of women ... yes, I think it's quite possible. Sometimes, people are too stupid to know how stupid they are, but they can recognize a vulnerable person from a mile away. Also, stupid people would make a lot of mistakes during the commission of a crime because of their stupid arrogance (not realizing that other people may be smarter than they).
People like MR and TM probably thought they were flying in the fast lane with their drugs and decadent lifestyle. MR probably thought he was la creme de la creme with women (Mr Dance), lining them up like he was running a pinball machine. Yes, he was stupid enough to think that he could get away with what he did, even though he was careless, even after TM was arrested for an unrelated matter. In fact, he's still trying to get away with it even though there is an eyewitness and overwhelming evidence of his guilt. There's nothing surprising in the fact that MR is trying to pull the wool over everyone's eyes and get away with murder, but he's still dumb as a brick.
Neither MR nor TM were duped. They were on a drug crazed, fantasy mission that involved sexually assualting and murdering a child. They must have talked about it before that day. If they claim today that they don't know why they did what they did that day, it's believable. They were stoned out of their minds and although it seemed like a good idea at the time, it makes no sense to them today ... so they can't explain why they did it. Murderers can rarely explain why they did it in a way that makes sense to anyone else ... as far as I know.