Many of your questions should be answered in the this documentary nugnug posted
https://www.youtube.com/watch?v=Tnvr0c5ZofY
I believe his sentence ends when he is 150 or something 
Thanks for this David. I've watched it twice, just to make sure I haven't missed anything, but the questions I asked aren't answered by it. The fibres on the club, originally claimed to match the pyjama top may, in fact have been black wool - I saw something else that mentions black wool fibres on Colette's body which didn't match any other items in the house.
But there doesn't seem to be anything about later DNA testing to say whether, for example, the claims that massive amounts of Colette's blood were found on the bed of one of the children were actually supported by the evidence. Nor is there anything about whether the claimed row was separate from the claimed bed-wetting incident.
There is some evidence that Colette was approached after her evening class by a group matching the description of "the hippies," but it's not clear exactly what the significance of that is.
As a circumstantial case, it doesn't seem particularly strong by today's standards. Can you tell me where the sentence ending when he's 150 comes from? The only thing I've seen, as I said, was the claim in Fatal Vision that he would be eligible for parole in 1991.