Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A gripping exploration of human nature

This is a must-see movie for anyone interested in Ireland, human nature under stress, the IRA, police work, urban guerilla warfare, superb acting, great direction, or simply a wonderfully compelling story. How and why someone would turn informer, how others would relate to him and vice versa -- the way this movie presents these and other issues is superbly well done and the acting is absolutely convincing. Having read the other reviews, I was prepared to find the Dalton character (lead RUC inspector) much more brutal and simplistic than he was. Mind, he's no peach, but Dalton carries conviction, as do all the other actors, including the poor hapless Brit soldier caught up in the middle. Can't recommend this highly enough.