Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Excellent read!

I'm a huge Tess Gerritsen fan and have read all her books. I did a search to find authors like her. Richard Steel came up. This was the first of his books I've read and it didn't disappoint! You'll think twice about what you put in your mouth after reading this book! I highly recommend it. I'm going to check out some of his other books soon.