I Saw the Devil

I Saw the Devil is a 2010 South Korean vigilante action-thriller film directed by Kim Jee-woon and written by Park Hoon-jung. Starring Lee Byung-hun and Choi Min-sik, the film follows NIS agent Kim Soo-hyun (Lee), who embarks on a quest for revenge when his wife is brutally murdered by the psychopathic serial killer Jang Kyung-chul (Choi). I Saw the Devil made its premiere in the United States at the 2011 Sundance Film Festival and had a limited U.S. theatrical release. The film received generally favourable reviews from the critics. I Saw the Devil was Choi Min-sik's first major role since the changes to the Korean screen quota system. Plot A school-bus driver named Jang Kyung-chul encounters a woman named Jang Joo-yun and offers to fix her flat tire. After beating her unconscious and bringing her to his home, Kyung-chul methodically dismembers her, unaware of her ring dropping and getting stuck in the drain. Kyung-chul scatters the body parts into a local stream, where it is discovered, prompting the police to conduct a search led by Squad Chief Jang, Joo-yun's father. Her fiancé, Kim Soo-hyun, an NIS officer, vows to take revenge against the murderer.