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.
You can now watch The Gangster, the Cop, the Devil online on the following streaming providers in the United States.
| Directing | Lee Won-tae | Director |
| Production | Jang Won-seok | Executive Producer |
| Production | Seo Kang-ho | Producer |
| Sound | Cho Young-wuk | Original Music Composer |
| Art | Jo Hwa-seong | Production Design |
| Camera | Park Se-seung | Director of Photography |
| Costume & Make-Up | Nam Ji-soo | Costume Design |
| Editing | Heo Sun-mi | Editor |
| Editing | Han Young-gyu | Editor |
| Sound | Kim Chang-seop | Sound Supervisor |
| Costume & Make-Up | Kim Hyun-jung | Makeup & Hair |
| Production | Jung Cheol-ung | Executive Producer |
| Art | Jeong Yi-jin | Production Design |
| Writing | Lee Won-tae | Screenplay |
| Art | Choi Hong-seob | Set Decoration |
| Editing | An Hyeon-geon | Assistant Editor |
| Lighting | Shin Seung-hoon | Lighting Director |
| Camera | Ha Jin-kyung | Camera Operator |
| Crew | Choi Bong-rock | Fight Choreographer |
| Crew | Kim Seon-wung | Stunts |
| Sound | Han Cheol-hui | Production Sound Mixer |
| Visual Effects | Hong Jang-pyo | Special Effects Supervisor |
| Visual Effects | Park Ui-dong | Visual Effects |
| Art | Shin Bo-ra | Props |
| Crew | Yoon Seong-min | Stunts |
| Visual Effects | Bae Sang-min | Matte Painter |
| Production | Sylvester Stallone | Producer |
| Art | Kim Min-hye | Art Direction |
| Production | Choi Ji-young | Line Producer |
| Camera | Cha Min-jung | Still Photographer |
| Production | Kim Min-jun | Line Producer |
