I Saw the Devil

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-hun

  Kim Soo-hyeon
• 
  Choi Min-sik

  Kyung-chul
• 
  Jeon Kuk-hwan

  Squad Chief Jang
• 
  Cheon Ho-jin

  Section Chief Oh
• 
  Oh San-ha

  Joo-yeon
• 
  Kim Yoon-seo

  Se-yeon
• 
  Nam Bo-ra

  Section Chief's Daughter
• 
  Lee Jun-hyeok

  NIS Agent
• 
  Yoon Chae-yeong

  Nurse Han Song-i
• 
  Choi Mu-sung

  Tae-joo