I Saw the Devil

Overview

Kyung-chul is a dangerous psychopath who kills for pleasure. Soo-hyeon, a top-secret agent, decides to track down the murderer himself. He promises himself that he will do everything in his power to take vengeance against the killer, even if it means that he must become a monster himself.

• Lee Byung-hunKim Soo-hyeon
• Choi Min-sikKyung-chul
• 전국환Squad Chief Jang
• 천호진Section Chief Oh
• 오산하Joo-yeon
• 김윤서Se-yeon
• 남보라Section Chief's Daughter
• Lee Jun-hyeokNIS Agent
• 윤채영Nurse Han Song-i
• 최무성Tae-joo