De baas van een gangsterbende, Jang Dong-su genaamd, weet op het nippertje een gewelddadige aanval door een ongrijpbare seriemoordenaar te overleven. Daarop gaat hij een onwaarschijnlijk samenwerkingsverband aan met de lokale detective Jung Tae-seok om de sadistische moordenaar, bekend onder de naam "K", in de kraag te vatten.
Nee, helaas is The Gangster, the Cop, the Devil nog niet beschikbaar op Netflix in Nederland.
| Visual Effects | Hong Jang-pyo | Special Effects Supervisor |
| Art | Shin Bo-ra | Props |
| Crew | Yoon Seong-min | Stunts |
| Visual Effects | Bae Sang-min | Matte Painter |
| Production | Sylvester Stallone | Producer |
| Sound | Han Cheol-hui | Production Sound Mixer |
| Art | Kim Min-hye | Art Direction |
| Production | Choi Ji-young | Line Producer |
| Camera | Cha Min-jung | Still Photographer |
| Visual Effects | 박의동 | Visual Effects |
| Production | Kim Min-jun | Line Producer |
| Directing | Lee Won-tae | Director |
| Costume & Make-Up | 남지수 | Costume Design |
| Editing | Heo Sun-mi | Editor |
| Editing | Han Young-gyu | Editor |
| Sound | 김창섭 | Sound Supervisor |
| Production | 장원석 | Executive Producer |
| Production | Seo Kang-ho | Producer |
| Sound | 조영욱 | Original Music Composer |
| Art | 조화성 | Production Design |
| Camera | Park Se-seung | Director of Photography |
| Art | Jeong Yi-jin | Production Design |
| Costume & Make-Up | Kim Hyun-jung | Makeup & Hair |
| Production | Jung Cheol-ung | Executive Producer |
| 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 |
