What a finale to a great and bold season!
Paige has been obsessive with the Lena situation and completely lost sight of her job and the other lives she affects with her obsession, but what she did to Mike was unforgivable.
She didn't give him a chance with a proper conversation, she took a mumbled sentence from a shot up guy as her proof, but the real crime that makes her as bad as a guy she was wrongly judging, is that instead of turning Mike in as a suspected killer, she goes and tells a total psycho where he is knowing exactly what would happen. So not only is she every bit as corrupt but she is a coward that is using someone else to do her dirty work.
Poor Johnny, he's in deeper than ever now.

I was surprised that Carlito was in with Sid and that Sid killed his entire team, pretty insane plan that counted on Mike's ego.
The stuff with Charlie was intense and I was sure she was going to lose the baby, glad she didn't. From her conversation with Briggs on the bed afterwards it seems clear she thinks Mike was going to/has turned the tape over to the FBI.
Despite Mike looking dead I don't think he will be, my guess is that he is kept alive but Briggs fakes his death and keeps it from the house, then helps Mike who'll be working from the shadows find a way to bring down Sid, who has turned into a formidable villain.
Another possibility is that Mike is saved, tried and sentenced, then Briggs, Charlie and Jakes help him escape and he spends the season on the run as a fugitive trying to clear his name.
Either way this has been the best show of the summer for me and has set things up perfectly for an exciting 3rd season.