This was an intense book. I, about halfway through, had a nervous pit in my stomach while reading it but couldn't put it down. I love that I couldn't predict how it would end, that I was in suspense until the last page. The first quarter of the book was a slow start for me and I was trying to rush through the long descriptions of the OCD stuff but it did pick up and I'm glad I stuck with the book. A great, white knuckled, nervous stomach read.