Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: A great mystery.

This was the first Henrie O book I've read. It won't be the last. I liked Henrie O. She is a strong character who can face her fears and do what needs to be done. In this case, she needs to begin to solve the mystery of her husband's death. So it's off to Hawaii to meet one of her husband's old friends, who is also a lady and thus begins her experience.This is not like the Carolyn Hart mystery series Death on Demand. The characters are very different and the mystery a bit more dark. Also, she doesn't put in all the references to other mystery novels as she does in her Death on Demand books.Enjoy.