Just finished up the season last night. Terrible conclusion to the season's murder mystery. One would think AJ and the other kid wouldn't be so concerned about Kyle's memory. If Kyle got his memory back, he'd remember that the two of them witnessed him going on a psychopathic murder spree of four unarmed people (including two innocent children) and, instead of reporting him to the police, actually swapped out the guns in a manner that helped cover up the crime and planned to keep permanently quiet about it. He'd get away with it forever, thanks to their actions. So I was a little baffled by that. I also didn't like the way the show seemed to position those other non-murdering boys as the villains and Kyle as some sort of victim. They were little shits, but they weren't murdering any of their siblings at least. One point for them!
Also, "IT'S BECAUSE HE'S REALLY MY SON!!!" Wow. It was like a really long L&O: Criminal Intent episode.
It's also odd to me that the show seemed to be asking us to feel compassion for Seward being executed for a crime he didn't commit, but to shrug off Mills being executed for, what, 27 crimes he didn't commit? We know Mills was a violent criminal nonetheless, but so was Seward (by his own admission). It's not okay in either case.
I was never once rooting for Linden/Holder to get together, but I was actually far more charmed by the idea once they played out that ending. (Overwrought ending, yes, but it still got me. Love those two.)
I kept wishing Linden would be a little nicer to Reddick. I don't think he would have been entirely unsympathetic to the situation if he hadn't hated her so much.
Ultimately the finale made me glad only because it had a good share of callbacks to Season 3, which I found to be its best by about a million country miles.