Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sorry to say, too dark for me

Unfortunately Nevada Barr seems to be going the way of a lot of popular authors, writing books that are not enjoyable to read. It's too bad, since I really enjoyed the other books in the series. This one had too much perversion and I skimmed most of the book. I hope she gets out of this dark mood and starts writing in the style of the earlier Anna Pigeon books. I liked the light mystery and descriptions of the Parks that made the books different and interesting. After reading this one I don't even want to visit the park it's set in.