There's not much to say here that I didn't say in my review for the first season, if you haven't seen the first season of Ashes to Ashes don't start here, you'll be lost, and at this point if you haven't already seen Life on Mars you can still follow it but I still recommend watching LoM first.
Ashes to Ashes (season two)
Summary: It's now 1982 and Alex Drake is still stuck in London a police officer more than 20 years before she should be on the force. But she's not the only one with problems, it's become apparent to her and Gene Hunt that the force is practically rotting from the inside out with corruption and the more they try to just find the root of the problem the larger the problems become.
The Good: I'm not sure if the show found it's pace or if I did but I liked this more than the first season and about as much as I liked Life on Mars which is what I was hoping for. It helped that Alex isn't constantly chomping at the bit to get home, she's started settling in which is pointed out repeatedly to the viewer, and some of the elements in this season change even more what Alex and the viewers knew about this strange alternate (or past) world from LoM. That's interesting, the mere existence of A2A shows that not everything was revealed in LoM and I suspect that's why I've seen some places say that it's hard to understand the last season if you haven't seen both, bring it on is all I have to say!
The Bad: I can only hope the story has a good explanation for what was going on at the very end since otherwise that last scene could completely wreck the setting, although I think it's hinted at what's going on a bit with one of the new characters in this season. And I was a bit frustrated by the betrayal by another, long running character this season, since we've now seen them for multiple seasons it just felt completely out of character (even taking into account that there has been a several year time difference between LoM and A2A). That detail I think I'll just have to accept and move on but hopefully the show will be able to wrap up all it's other details satisfactorily.
The Production Values: It only took me a full season but I started recognizing some of the music, wahoo! Other than that, like before I don't have much to say, I barely know anything about the 80s so I can't comment on how accurate or no the settings, props, and clothing is, although in this show I'm always surprised at just how many songs they manage to find that are both apparently period accurate and reflect what is going on in the show.
So for this season I don't have much to say, it's the middle of a trilogy and often it's hard to find something to say about those stories no matter what medium they're in. But I'm giving this season a 3.5 out of 5 and can only hope that the ending doesn't let me down!