A detective suspects that his wife murdered a gangster's brother. As he tries to misdirect the police and the bloodthirsty gangster while independently investigating his wife, terrible secrets slowly begin to surface.
Unfortunately the movie Secret is not yet available on HBO Max.
| Costume & Make-Up | Kim Yoo-seon | Costume Design |
| Production | Kwak Joong-hoon | Producer |
| Crew | Ricky Jeon Je-Hyeok | Stunts |
| Directing | Yoon Jae-goo | Director |
| Visual Effects | Baek Sang-hoon | Visual Effects Supervisor |
| Camera | Lee Du-hoon | Camera Operator |
| Visual Effects | Kim Nam-sik | VFX Supervisor |
| Camera | Lee Seong-je | Director of Photography |
| Lighting | Lee Byeong-hoon | Lighting Director |
| Sound | Lee Eun-joo | Production Sound Mixer |
| Writing | Yoon Jae-goo | Screenplay |
| Editing | Park Eun-kyung | Assistant Editor |
| Production | Lee Hyeon-Myeong | Producer |
| Production | Park A-hyoung | Line Producer |
| Production | Kil Young-min | Executive Producer |
| Production | JK Youn | Executive Producer |
| Production | Ku Tae-jin | Line Producer |
| Production | Jang Jin-seung | Co-Producer |
