And the number one question (for me)...why was he there in the first place?
For me, it's still why was David stabbed to death, there and then. Anyone who wanted him dead could have made it easier for themselves than this setup. What did they need from David? Why was it set up as such, to look like something it isn't, I think still, considering the murder charges from today?
HastingChi had posted one idea that had been floated about some financial thingy?
Or theft/robbery of something the perps didn't leave behind in the room that David may or may not have known to value? Once you have a setup, I guess it's knowing which direction and how far it goes?