I just didn't like this book. It feels like a real slog to get through - I have about 100 pages to go, and it's mostly stubbornness keeping me going - I don't care about any of the characters, the impending invasion of San Francisco or how the story is going to end...it's just not gripping me.
I think the main problem is that it sort of jumps straight into the action - which is good, but then never goes back and gives you any background. I checked 3 times to ensure I'd got the first in the series, and only actually believed it when I saw the blurb on the back mentioned it was a first book.
This is definitely not a debut novel, however, and the writing is confident and accomplished...I just think, considering the book is 440 pages long, a couple of pages could have been devoted to world-building.
The sex is very good and well-written. If the author had either cut the story down a bit (the plot is strangely slow-paced) or added more detail, it would have been much, much better, but as it is, I'm not going to bother with the other books in the series.
It's not a bad book, and it's probably my sound-bite generation-ness showing through, but for a book this long, I need to care about the characters, and I've just not got this from the author.