Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a gripping true story of one young russian communist

who was able to escape to canada in the end, where he was saved. this is an amazing book, a true story. he talks about meeting with some of the leaders of the country, the communists at the top. to me, the most amazing part of this book is that if sergei had stayed where he was, he would have been promoted high up in the country - perhaps all the way to the top - and we may have been hearing of him in the news today. but he realised that none of it was right, that there was truth out there, and that it was held by the Christians he had been hired to torment and kill. he finally escaped to canada and died shortly thereafter. this is an amazing book. if you can get your hands on it, read it!