I Saw the Devil

Kim Soo-hyeon: I will kill you when you are in the most pain. When you're in the most pain, shivering out of fear, then I will kill you. That's a real revenge. A real complete revenge.

I Saw the Devil
Starring Byung-hun Lee, Min-sik Choi, In-seo Kim
Written by Hoon-jung Park
Directed by Kim Jee-Woon
Plot: An intelligence agent seeks revenge with a capital "R" against the man who murdered his wife - blurring the lines of justice in the process.

"A very unsettling film... A different kind of thriller, but in a good sense."