This book is going to be hard to review because I don't want to give away any of the plot. The synopsis doesn't even crack the surface of what happens in the story. So I'll break it down into my likes and dislikes. Then you can decide for yourself. 
 What I liked: The overall mystery. This book has so many twists and turns and side paths that it will make you dizzy. Every time I thought I had it all figured out, I found that I was way off base. The plot was well planned and laid out in such a way that I wanted to keep listening just to see if I was right. Most of the time, I wasn't. As I have said before, I love that in a book! I also loved the character, Detective Joona Linna. He is definitely someone I want to read more about in future books. 
 What I didn't like: Some of the characters. Erik's wife Simone was just too whiny and annoying. Also, there is a huge lack of communication among the characters and that really frustrated me as a reader. I also thought it was a bit long and had scenes that could have been shortened. The audio book is 15 CDs. 
 So, I do recommend this one if you like police procedural/serial killer mysteries. There are some gruesome parts that made me cringe. The language is also a bit harsh for my taste. But in the end, I felt satisfied and look forward to the next in the series being published in the US.