Instruct: Classify a given review into positive or negative sentiment.
Query: riveting - hard to put down

I met a missionary at church. He now works in northern Thailand. He said that previously his family worked in northern Burma. When the government told them to leave, they and many local people walked over the mountains toward India, thinking they would enter India. This is a true story of what happened to his extended family and the Lisu people who accompanied them. It is very well written. It is exciting and very difficult to put down. I recommend it to anyone interested in missions or in southeast Asia. It came just a few days after I ordered it.