Set in the late 1920s, The Age of Shadows follows the cat-and-mouse game that unfolds between a group of resistance fighters trying to bring in explosives from Shanghai to destroy key Japanese facilities in Seoul, and Japanese agents trying to stop them.
| Camera | Kim Ji-yong | Director of Photography |
| Sound | Mowg | Original Music Composer |
| Production | Lee Jin-sook | Executive Producer |
| Lighting | Cho Gyu-young | Gaffer |
| Editing | Yang Jin-mo | Editor |
| Directing | Kim Jee-woon | Director |
| Production | Kim Jee-woon | Producer |
| Writing | Park Jong-dae | Writer |
| Production | Choi Jae-won | Producer |
| Production | Choi Jeong-hwa | Producer |
| Writing | Lee Ji-min | Writer |
| Costume & Make-Up | Cho Sang-kyung | Costume Design |
| Art | Jo Hwa-seong | Production Design |
| Costume & Make-Up | Kim Seo-young | Makeup & Hair |
| Art | Jeong Yi-jin | Art Direction |
| Costume & Make-Up | Son Na-ri | Costume Designer |
| Writing | Kim Jee-woon | Adaptation |
| Costume & Make-Up | Hwang Hyo-kyun | Special Effects Makeup Artist |
| Sound | Kim Byung-in | ADR Recordist |
| Visual Effects | Jung Hwang-soo | VFX Supervisor |
| Crew | Jung Doo-hong | Fight Choreographer |
| Editing | Ryu Yeon | Digital Intermediate Producer |
| Editing | Park Jin-young | Digital Intermediate |
| Crew | Yang Hae-gil | Stunts |
| Sound | Kim Sin-yong | Production Sound Mixer |
| Crew | Jeong Yoon-heon | Martial Arts Choreographer |
| Directing | Lee Beom-seok | Assistant Director |
| Crew | Noh Nam-seok | Stunts |
| Visual Effects | Yoon Dae-won | Special Effects Supervisor |
| Crew | Song Min-seok | Stunts |
| Editing | Lim Hye-jin | Assistant Editor |
| Production | Lee Dong-jin | Line Producer |
| Art | Kim Min-hye | Art Direction |
| Visual Effects | Son Seung-hyeon | VFX Supervisor |
| Crew | Yun Min-gyu | Stunts |
| Crew | Lee Tae-yeong | Stunts |
| Art | Eom Se-yong | Props |
