It's really very good. It would be hard to say enough about this book without divulging important points. I will say that the end will blow you away -- not because it's a surprise, but because of the visceral upheaval you may (I did feel) racing to the conclusion. The beauty of this kind of writing is that everything that occurs is there, hidden in plain sight in the tiny details so that the end is relief but not a shock. The shock comes from the recognition that we share Mickey Haller's joys, pains and disappointments during his discoveries. The satisfaction comes when we agree with his final acts and decisions.
This is well worth the credit to listen to. Although not the deepest of fiction (what do you expect, really?), it certainly is a valuable choice.
The characters are real people, people that could live next door. There is certainly enough humor and sass to keep the story light. But there is also mystery and intrigue, how is it all going to come together in the end? I found it very entertaining.
The narrator is wonderful. I find that narrators who make a huge effort to have huge changes in their voice fail. Grove Gardner does not do that. There are subtle distinctions, but not enough to sound fake.
So this book is slightly more than beach fare, but not heavy enough to bore you. I also appreciate that this Andy Carpenter, although irreverent at times, is not loose-moraled. He shows respect for his parents, loyalty to loved ones (he doesn't take advantage of either an estranged wife or the new girlfriend), and is a good frend (even if only because of superstitions).
Enjoy this book. I look forward to reading others in the series.