Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I don't get it.

This book is so terrible. It's difficult to keep track of who is in alliance with whom. I also couldn't understand why in the world the CIA or FBI would be so interested in this. It just didn't make any sense to me. Maybe it would have been explained later in the book, but I am another that was unable to finish it. I quit about 50% of the way through. I have never read an Iris Johansen book before, and with this being my first attempt, I doubt I will make another.