The Big Question
*** SPOILERS ***
I've seen the entire series, and I have a really big question to ask. If the case had not been sent back, who was GOING to shoot J.T.? It probably wasn't going to be the police guy (Quaid) since he would have only gotten involved at the homicide level AFTER J.T. was killed (since he was only brought in early because of the case file).
Since it happened at the Buck Naked bar, I feel it had to be Bremmer since he brought this place into the 'equation' (since he suggested it as the meeting place, I have to believe he had gone there before). Also, he would have found Angela/Claudia easier since she got a 'head-up' from the case file too, so it's easy to imagine the scene where J.T. is killed running from Bremmer (J.T. being there to talk reason to Bremmer, as he had tried ealier)...
Also, except obviously for its purpose at the end, why did the original killer drop a second bullet? And how did J.T. keys disappear? Shouldn't there have been two sets with the one sent back?
And wouldn't it have been a lot easier if Jesse had said it was her who sent it (via a small note included in the case?)...