Sorry if this has already been mentioned before, but I've only been able to make it through 7 pages of this thread so far. Two things stick out for me, when considering Rafferty's side of the he said/she said.
1. It tests my common sense to the LIMIT to try to think that Rafferty knew there was an abducted child in the car, he drove her out of town, knew she was killed, and then said NOTHING. He seems to be all about securing his freedom in this (not talking to police and always speaking through a lawyer), so why not just secure your freedom from the start and GTFO of that situation as soon as she was done murdering that child?
Anyways, there are TOO many things for me to ever believe option 1.
2. Why didn't Derstine use the defense:
"TLM asked MR for a ride for her and her Niece/Daughter/Little Sister/Cousin/WHATEVER to Guelph, where they would drop the girl off at a farmhouse. Murdering ensues without MR's knowledge (defense could dream up a series of ultimate scenarios for this lie, too, I'm sure), and drives TLM home. Heck, they could even argue that he DID see the murdering happen and DID clue in that it was TS when questioned by cops, and it would still work. My point is: if they are going to construct a defense that aims to remove him from the responsibility of this, why not go the whole way with it, why not say that he didn't know he was 'kidnapping' anyone at all? Wouldn't that even go more with their idea that TLM was the one to 'drive' this engine? Unless, of course... he is telling the truth about the whole thing, or they somehow somewhere have some sort of 'proof' that he did know he was taking part in the kidnapping.