Just wow! I absolutely loved this book. I actually would give it a 4 1/2, not just a 4. It had me scratching my head all the way up to the end. There is a bit of POV hopping that makes it hard to follow at times and why I didn't give it a 5. However this book is translated from German, so I can't really say if it is the fault of the author or the translator. If you love a good mystery, you will love this one!