Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A fun mystery!

Invisible (Ivy Malone Mystery Series # 1)Lorena McCourtneyThis was a great find on Amazon.com. It was free and a mystery. The story line is that there are people damaging the graves at an old cemetary, her long time friend dies, the friends tenant disapears - who is actually dead and Ivy decides to investigates both the mysteries going on around her while coping with the loss of her best friend.A fun fast moving story that I had to frequently remind myself that Ivy was a senior citizen during this story, because she was so much fun! I want to read the rest of this series and look forward to doing that someday.