I Saw the Devil

About I Saw the Devil on 123movies: released in 2010, directed by Kim Jee-woon, running 144 minutes, produced in South Korea. Kyung-chul is a dangerous psychopath who kills for pleasure. Soo-hyeon, a top-secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take vengeance against the killer, even if it means that he must become a monster himself.