It was definitely a book that was hard to put down, but it annoyed me for a couple of reasons. Firstly, as someone who is fussy about English grammar, I found the book was not very well written - a lot of sentences ending in prepositions ("Prop me up against the wall - where I can watch him from."). Also, it annoyed me just how right DI Sean Corrigan was throughout the book - the things that he imagined or guessed nearly always turned out to be correct, even when he had no evidence for them. This just seemed too unrealistic to me.
Like I said at the beginning though, it was a book that was hard to put down, and I read all of it!