I listened to this on audio and I think the narration was very well done.   I feel like this book was written for shock factor.  There are a lot of really blunt discussions of sexual acts that I think are intended to shock the reader.  There was a little mystery involved, and although I started to get exhausted by the never ending list of bad decisions made by the main character, I stuck around because I wanted to know the answers to the mysteries.  All those questions are answered in the last couple of chapters and overall they were a little underwhelming. I had pretty much guessed everything.  I almost expected a bigger shock based on the rest of the book so it was a little anti-climatic in the end.