As you can read in the description of the book. The storyline gives the opportunity for an exhilarating book which blows your mind away. And to be honest the story is written in such a way that it actually does. Also there is no way of being able to tell which of the writers wrote which part. When I started reading this book I got caught by the story immediately and had problems putting it away every time I had to do something else.
The beginning of the book is really good and they managed to keep up to this level for about the first half of the book. At this point the story takes a turn. A turn that gives a bit of a hint of other popular books. When I was reading it I had to think of the Twilight series. And I think that this series inspired the writers in part of their book. Though it is not that this is some sort of rip off from that series. The story line is very different but just this point bothered me a little. Also in the book they repeat a sentence which is being said in the first movie.
Towards the end the story gets better again, it comes back to the level of the beginning. It being a book in series it needs a good ending. This book, the first of the series, definitely has that; I think it would be the dream of a soap opera writer to write an ending like this which fits so perfectly in the story. And yes endings like these have been written for soap operas.