Brutal South Korean film about a serial rapist/killer (Min-sik Choi, Oldboy) who picks on the wrong girl when he kills and chops up the pregnant fiancee of a government secret agent (Byung-hun Lee, A Bittersweet Life, The Good, The Bad, The Weird) who proceeds to track him down, beat him to a pulp, place a tracking device on him, give him some money and release him. The idea being that he wants the killer to suffer and suffer and suffer, again and again, until his fear is as great as that of his victims, before he kills him.
I Saw The Devil is not without its faults; at almost two-and-a-half... read the rest.