Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Well written but gruesome

Give this 5 stars for being well written but negative 5 stars for leading the reader into what is thought to be old school freinds reminiscing and turns out to be a ghoulish story about cloned children that are raised to be harvested for body parts for transplant. After 4 "donations" they "complete". I couldn't put it down, but also wanted it to be over and wished I'd never read it. Read this only if you are interested in this gruesome theme! Maybe I'm missing the deeper theme....