Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Split personality

The first half of the book regarding a mother's anguish over her son's disappearance was poignant and beautifully written. By the time I finished the book, I thought another writer had taken over mid-point and changed the focus of the novel. The ending was much more mystical/science fictiony/religious than I had expected when I picked up the book. All in all, the book was well-written but too farfetched at the end for my liking.