Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not Up to Par

Perhaps I shouldn't review this, because I only gave the book 100 pages, but being a professional book reviewer, I feel comfortable in feeling that if a book doesn't do it for me in the first 100 pages, it's never going to. "Coffin Dancer" is a very disappointing read after the rollercoaster of "The Bone Collector," the first Lincoln Rhyme novel. I was really anxious to read "Coffin Dancer," because I like Rhyme and Amelia Sachs so much, but it moved slow as a slug on a hot day. The only thing that drove the plot was the romance between Sachs and Rhyme; the killer could have zapped his target very early in the book [he had means and opportunity, and time] but for some mysterious reason he never bothered to pull the trigger. I wish I could recommend this Deaver outing, but I can't. I will read "Empty Chair," because I like the protagonists so much, but I'd tell others to skip "Dancer" unless they need a sleeping draught.