A serial killer is caught for his seventh murder. A cop tries to solve the first six cases with the killer's help, but starts to suspect that he has ulterior motives. Based on a true story.
| Writing | Kwak Kyung-taek | Screenplay |
| Writing | Kim Tae-gyoon | Screenplay |
| Directing | Kim Tae-gyoon | Director |
| Editing | Kim Sun-min | Editor |
| Camera | Hwang Ki-suk | Director of Photography |
| Costume & Make-Up | Shin Ji-young | Costume Design |
| Costume & Make-Up | Park Min-hui | Makeup & Hair |
| Sound | Gong Tae-won | Sound Supervisor |
| Sound | Mok Young-jin | Original Music Composer |
| Art | Lee Bong-hwan | Production Design |
| Production | Kwak Kyung-taek | Producer |
| Camera | Kim Gi-hyeon | Assistant Camera |
| Production | Shin Young-il | Producer |
| Lighting | Kim Uk | Lighting Director |
| Crew | Jeon Yu-jun | Fight Choreographer |
| Costume & Make-Up | Lee Jong-kyeong | Costume Designer |
| Camera | Choo Kyoung-yeob | Camera Operator |
| Production | Kim Do-su | Executive Producer |
| Production | Lee Soon-gyu | Executive Producer |
| Sound | Jung Hyun-su | Production Sound Mixer |
| Lighting | Kang Dae-hui | Lighting Director |
| Camera | Woo Geum-ho | Camera Car |
| Camera | Jeon Seung-hwan | Grip |
| Visual Effects | Im Myeong-ju | VFX Supervisor |
| Visual Effects | Mun Byeong-yong | Visual Effects |
