I Saw the Devil is a 2010 Korean-language Action Crime film written by Park Hoon-jung and directed by Kim Jee-woon and produced by Kim Hyun-woo. Starring Lee Byung-hun and Choi Min-sik, the film follows NIS agent Kim Soo-hyun , who embarks on a quest for revenge when his wife is brutally murdered by the psychopathic serial killer Jang Kyung-chul . I saw the devil stars Lee Byung-hun in the title role along with an ensemble cast including Choi Min-sik, Byung-hun Lee, Min-sik Choi, Gook-hwan Jeon, Ho-jin Chun and San-ha Oh. The music was composed by Mowg. Cinematography was done by Lee Mo-gae and editing by Nam Na-yeong. The motion picture has a running time of 144 minutes. It was released on 12th August 2010. The Film was successful at box office. I Saw the Devil was made on a budget of ₹60 lakh and it was a super hit at box office gross of $12 million. Distribution rights for the film were acquired by Showbox. Starring Lee Byung-hun and Choi Min-sik, the film follows NIS agent Kim Soo-hyun , who embarks on a quest for revenge when his wife is brutally murdered by the psychopathic serial killer Jang Kyung-chul .