Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An intriguing but not wholly satisfying experience.

This is the first book I've read in a long while that leaves me perplexed as to how I feel about it. It was intriguing enough to keep me interested, it had a fascinatingly fiendish villian, and it was more highbrow than your average pulpy serial killer book. However, I think my ambivalence about the book lies mostly in the fact that I didn't much CARE what happened to these people. Dart was fascinating but too arrogant, Davey was completely annoying, and Nora was just THERE. Oddly enough, I found myself more interested and concerned about the people and events of the past (Mannheim and company). I would not call this a BAD book, but I have to care about the people or I can't root for them to survive.