I bought this book for 3Euros in Austria and wanted a challenge reading something in German. If it weren't for my interest in the language I was reading, I don't know that I would have finished it. It did a decent job at creating a psychological profile of a creepy stalker, but almost the whole book took place in one spot, and most of it was internal dialog. It is also fairly predictable, though you don't get to see your prediction come to light until literally the last paragraph of the book. It was an interesting idea for a novel... it's always kind of cool seeing events unfold through the eyes of the antagonist, but this was just too slow to do so effectively.