Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worth looking for

I enjoyed this mystery. Like the previous reviewer mentioned, there is a nice twist at the end. I understand the book is out of print. It was published in 1980, and the dialog is somewhat dated. One character says "you're trying to freak me out"! But I liked the main characters, and there aren't many curse words. Try it, you'll like it!