Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Incredibly Boring

It happened so slowly that I don't know quite when it happened, but somewhere the Anita Blake books have just become plain boring. I had become disenchanted a few books ago, but held out hope the writing and plot line would get back to where it once has been. Danse Macabre is just boring -- there is no serious attempt at plot and the sex scenes are mechanical and totally lacking in any eroticism.