Instruct: Classify the given review into positive or negative sentiment.
Query: Didn't live up to its promise

I really agree with an earlier reviewer who said the ending was disappointing. The author drew me in, got me involved in the whole, mixed up, sad story of Ray Raintree and his family, and then, suddenly, it was over. It ended so abruptly, I felt cheated and disappointed.The book is also poorly edited. Besides the ever-present extraneous commas, there are a few startling errors, both on the content side and the grammar / punctuation side.