Cop, The Devil(2019): The Gangster, The

Kang Kyung-ho ( Kim Sung-kyu ), a mysterious psychopath who uses a "rear-end collision" tactic to lure victims out of their cars before stabbing them to death.

Jung Tae-seok ( Kim Mu-yeol ), a relentless detective frustrated by police corruption and the department's inability to track a series of random murders. The Gangster, the Cop, the Devil(2019)

Jang Dong-su ( Ma Dong-seok ), a brutal mob leader who is randomly attacked by a serial killer. Surviving the assault but suffering a massive "loss of face" among his peers, he vows personal revenge. Kang Kyung-ho ( Kim Sung-kyu ), a mysterious