Instruct: Classify the given review into positive or negative sentiment.
Query: Very Disappointing

I have read all but three of Patricia Cornwell's books. I have found their scientific approach appealing as well as the way Ms. Cornwell wraps the storyline. I find it hard to believe that Isle of Dogs was written by the same author. I am not completely sure what the central story was about because there were so many detours. At one point, there was a conversation between trout and crabs. I knew at this point that there was little hope in the quality of the book improving. The book was not only dull, but way below the quality of novel I have read from Ms. Cornwell in the past. It was very disappointing!!