When you look at the book, you must say "I can read this in a short time", as it is not that big a book. I had to start reading it 3 times before I got to a point, when I really wanted to move on. The beginning of the book is far too long until something happens. And from there on, it was really easy to find out who the killer was. I finished the book, so that I could prove to myself, that my deductions were correct, but I did not really enjoy reading it.