Instruct: Classify a given Amazon review as either positive or negative.
Query: big disappointment

If you are thinking of buying this book because you like Peretti's other books, DON'T. It sounds nothing like Peretti. I thought the writing was, to use another reviewer's word, dreadful. The story made no sense. The characters were unlikable and unreal. The Christianity tacked on at the end was likewise unreal. It sounded like my favorite type of book, a supernatural Christian thriller, but it is one of the worst books I have ever read.