Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Could have, should have

This is the first book I have read by Mr. Sullivan and after this I am not sure if I will read any more. I was rather disappointed with this novel after reading the premise and the excellent reviews that accompanied it. The background characters are in no way developed enough and as they were eliminated from the book I found myself not really caring. Addtionaly the perspective shifts from the present to the main characters past were very awkward and disorienting. In defense of this novel the hunting scenes were described very well and the background information on the Native American beliefs were fascinating-but not enough to carry the book. As a nature guide book-excellent-as a suspense novel-medicore