Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A masterpiece

This movie, pure theater in celluloid, is really a masterpiece. If I could save only ten films to see the rest of my life, Sleuth will be one of them. It's extraordinary how Olivier and Caine play their roles in this embroidered, strange, peculiar and unbeatable script. A rare jewel. Don't think twice: buy and see this film and do word of mouth with your friends... spread the buzz. There's nothing like this, nor even remotely.