This is probably my favorite ongoing series period. I realize I cannot objectively rate any of the books but I'll at least try. This one is terrific, but when compared to a few other installments I don't think it quite leaves me with that same sort of awe for what I just read. Some folks might still consider the entire book one big spoiler so I won't mention anything plot related either. 
 So what can I mention? 
 Um, so many references to nerdy things that I'm not sure I could count them all. Almost any conversation between the Dresden and someone else has at least one Star Wars reference, an entire scene takes place on an imaginary bridge of the Enterprise, with much dialog about how you can't truly like both Star Wars and Star Trek. Anywho, D&D reference or two, I think, um, all sorts of stuff like that. So, bonus points for all that. 
 But really, this is just about the ongoing struggle that a man has in doing the right thing. Especially when he's been forced in the past to make decisions that meant saving one person will mean hurting another. This book is all about those consequences, what happens when you realize all this 'good' you've been doing for the past several years has been ruining the lives of those you care about? How does Harry deal with that? 
 Now there is another supernatural threat looming and he may have to make some more not so great decisions if he wants to stop it. 
 Great book, not the best of the series, but still great.