. After the gangster is randomly attacked and nearly killed by a serial killer known as "K," he teams up with the cop to track down the murderer—though both have different end goals: the cop wants an arrest, and the gangster wants revenge. Ma Dong-seok (Don Lee) as Jang Dong-su (The Gangster). Kim Mu-yeol as Jung Tae-suk (The Cop). Kim Sung-kyu as Kang Kyeong-ho (The Devil/Serial Killer). Production : A U.S. remake is currently in development with Sylvester Stallone

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