2010 South Korean action thriller film
I Saw the Devil (Korean: 악마를 보았다) is a 2010 South Korean 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 vengeance when his fiancée is brutally murdered by serial killer Jang Kyung-chul (Choi).
I Saw the Devil marks Choi Min-sik's first major role since the changes to the Korean screen quota system. The film premiered in the United States at the 2011 Sundance Film Festival and had a limited U.S. theatrical release, where it received generally favourable reviews from critics who praised its cinematography, cast performances and action sequences but criticized the graphic violence.
Plot summary adapted from Wikipedia, licensed under CC BY-SA 4.0.