Two guys who are working for cartels as cleaners get a request to monitor an 11-year-old kidnapped girl, but the situation gets worse when their supervisor gets killed.
Unfortunately the movie Voice of Silence is not yet available on HBO Max.
| Sound | Kim Kyoung-ho | Production Sound Mixer |
| Visual Effects | Kim Dong-myeong | Visual Effects Supervisor |
| Crew | Song Min-seok | Stunts |
| Production | Jung Hyun-ju | Executive Producer |
| Camera | Choi Yong-jae | Key Grip |
| Camera | Kim Jin-yeong | Still Photographer |
| Sound | Jang Yong-jin | Original Music Composer |
| Directing | Hong Eui-jeong | Director |
| Writing | Hong Eui-jeong | Writer |
| Production | Choi Moon-seok | Producer |
| Production | Lewis Taewan Kim | Executive Producer |
| Camera | Park Jung-hun | Director of Photography |
| Production | Kim Hyung-oak | Producer |
| Editing | Han Mi-yeon | Editor |
| Production | Afolabi Kuti | Producer |
| Lighting | Kim Bo-hyeon | Lighting Director |
| Sound | Jang Hyeok-jin | Original Music Composer |
| Costume & Make-Up | Yang Hyeon-seo | Costume Design |
| Costume & Make-Up | Im Gyeong-ran | Makeup & Hair |
| Art | Jeong Min-kyung | Production Design |
| Sound | Lee Sung-june | Sound Supervisor |
| Art | Heo Seo-hyoung | Set Decoration |
| Art | Kim Yu-mi | Props |
| Crew | Kwon Gwi-deok | Fight Choreographer |
