I think this is more a man's book than a woman's. Lots of fighting, blood and violence. I felt the characters were a bit one-dimensional, however once I started I finished it. Some books I don't want to waste time reading after the first few pages, but this wan't one of those. So........ I would say try it; see what you think.
Mmmmm.........I've just finished reading this book, and I really don't quite get it; all a bit surreal. (Hitchhiker's Guide-ish?) However, it's a jolly romp with some rather clever little elements - I liked the eventual fate of humanity! I actually quite enjoyed reading it. Not the best book I've ever read, but certainly by no stretch of the imagination anywhere even remotely near the worst.
I can see where the link to the scars changing one's life comes from, but the story didn't quite live up to the blurb, I'm afraid. I don't agree that it was boring; rather, it wasn't particularly fast-paced. I quite enjoyed it though, despite the ending (or lack of 'proper'ending).
This book kept me interested from beginning to almost the end. There were twists and turns in the plot that weren't too outlandish to believe, and the descriptions of the life of the police lieutenant who was hunting the killer and the way he became involved with the victims was well done. I do think the ending could have been a bit less flat, but that was really the only negative I would have to say about the book. I'm looking forward to the next novel by this author.