A psychotic serial killer is on the loose, committing some of the most diabolical crimes the police have ever witnessed. But, when the fiancée of an elite special agent becomes one of his victims, a personal investigation becomes a merciless and brutal game of vengeance. As one violent encounter leads to another it becomes increasingly unclear who is the more disturbed.
'I Saw The Devil' is a dark and hypnotically twisted thriller from one of the masters of Korean cinema, Kim Ji-Woon.