I almost labeled it fantasy. If you start this book, please put aside the time so you can finish it rapidly! I took a week break, and felt lost coming back because of the threads of the plot I hadn't held on to.
It is a fascinating book, worth the time, and it doesn't quite fit where you expect it. The mystical aspects are stronger here than in his first book (The Shadow of the Wind), and that's a negative in my opinion. My wife and I were both somewhat puzzled and dissatisfied with the epilogue/resolution. I enjoyed the characters, the intrigue, and the twisting plot. Overall, recommended.
The Angel's Game at PBSwap.