Let's keep this short:
I didn't love this one as much as <b>Storm Front</b>, and I remember things as a whole being better. Still, we get the introduction of the Alphas, we get to see a little bit of every type of Werewolf in this world (I'd forgotten 1 of them), Dresden makes some smart choices re: Karrin Murphy (but man, most of what happened between the two of them in this book was annoying to a fan, and poorly constructed I think), and a (in retrospect) dumb one about Susan.
The main story was pretty good -- I'd have liked to see Harry be a little quicker to figure things out, but he's not perfect. Nor is he the investigator he'll become eventually. I need to remind myself these are early days. As I recall, book 3 is a little less-good than this, which doesn't make me look forward to it. But I know I like where things go pretty quickly, so I'll keep going.
Marsters was fantastic -- this would've been a 3 in just about any other narrator's hands, er, vocal cords. I can't say enough good things about him.