"Very good"
I didn't think I would enjoy this...after all, a hunchback detective? But, I love it! The narration is wonderful. I must say, however, that the oldest review (2-21-12 by Catherine) partly spoiled it for me by telling us who the murderer is in her review. Jeesh. Why would someone do that? Don't read her review if you want the ending to be a surprise.
"I never finished it."
I found the narration poor and gave up on the book 1 hour into it. I agree with other reviews that this book should never have put into audio format.
"Outstanding"
I really enjoyed Child 44. In fact it is the best book I have read (listened to) in quite some time. Engrossing characters and locations with superb narration. All the loose ends come together in an excellent ending. You must get this book.