Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bait & Switch

This book tells a number of marginally interesting stories about the Viperfish, an apparently secret code name for the Halibut. What ever the top-secret mission was that is alluded to in the title is not revealed or even inferred in this book. Essentially, this tome is little more than a blog about an enlisted man's time on the SECRET sub Viperfish. To add suspense, the name Viperfish is always italiced when it appears in the book.