This book definitely keeps you guessing all the way through. Even when you think you know what is going on, you really don't. I have to admit I was a little confused throughout the beginning of the book and even went back a couple of times. I almost put it down. I'm glad I didn't it comes together at the end. A great suspense. A great psychological thriller. I would definitely reccomend to anyone who loves and enjoys those genres mentioned above, you will not be disappointed. I seriously did not know the crazy outcome until the very end and the twists in this story were very much unexpected. I actually cannot wait to see what these two authors come up with next, hopefully they will collaborate again.