After barely surviving a violent attack by an elusive serial killer, crime boss Jang Dong-su finds himself forming an unlikely partnership with local detective Jung Tae-seok to catch the sadistic killer simply known as K. Ma Dong-seok, Kim Moo-yul, Kim Sung-kyu, Choi Min-chul, Heo Dong-won, You Chea-myung, Lee Seo-hwan Added on Netflix 2022-03-30. Youtube Trailer