I would like to ask the mods if they would make a sticky of the known facts of the investigation to save me wading through pages of conjecture
There are no known facts
There are only facts that are believed to be known based on credibility of source and the experience of the interpreter to convey them.
The mods do not fit this bill.
Sorry but you are just going to have to wade through the stuff in this forum and decide for yourself what best represents credible fact according to your own experience.
I'll give you a clue some of the stuff here is "expert opininon" however much of it is wishfull theory