Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: The Book that Made Le Carre Famous

This is the one that made LeCarre's name. It is a dark look at the horrible machinations of the KGB and MI6 at the height of the cold war, and the price that a number of foot soldiers in that war paid. This book sets the form that LeCarre will work to perfection until the collapse of the Soviet Union - damaged British agents versus evil communists with a fair amount of innocents on both sides getting taken down in the whole mess. It's a great read, you should check it out.