To catch a killer he must become one.

Shockingly violent and stunningly accomplished, I Saw the Devil is a tale of murder and revenge from Korean genre master Kim Jee-woon. Kyung-chul is the embodiment of pure evil. He has committed horrifying and senselessly cruel murders, successfully eluding capture by the police. His latest victim is the beautiful Ju-yeon, the pregnant fiance of elite special agent Dae-hoon. Obsessed with revenge, Dae-hoon decides to track down the murderer, even if doing so means becoming a monster himself. When he finds Kyung-chul, turning him in to the authorities is the last thing on his mind. The lines between good and evil fall away in this diabolically twisted game of cat and mouse. Pushing the concept of revenge to its most extreme limits, Kim Jee-woon brilliantly transcends the police procedural and serial killer genres in surprising and thrilling new ways.