Een sergeant voelt zich schuldig nadat een auto achtervolging onschuldige slachtoffers heeft geëist. Hij is vastbesloten om de verantwoordelijke misdaadbaas voor de rechter te brengen.
Nee, helaas is 証人 nog niet beschikbaar op Netflix in Nederland.
| Writing | 林超賢 | Writer |
| Production | 張康達 | Producer |
| Directing | 林超賢 | Director |
| Production | Albert Lee Nga-Bok | Producer |
| Writing | 吳煒倫 | Writer |
| Production | 梁鳳英 | Producer |
| Camera | Cheung Man-Po | Director of Photography |
| Editing | 陳祺合 | Editor |
| Directing | Leslie Lam Pak-Wai | Second Assistant Director |
| Costume & Make-Up | Gloria Lam Wai-Lok | Hairstylist |
| Crew | 宋岱 | Presenter |
| Sound | Tam Tak-Wing | Sound Recordist |
| Directing | 董瑋 | Action Director |
| Camera | 謝忠道 | Director of Photography |
| Writing | 林超賢 | Story |
| Art | Tsoi Chi-Hei | Assistant Art Director |
| Art | Yau Yui-Chit | Assistant Art Director |
| Costume & Make-Up | Ma Chun-Kui | Assistant Costume Designer |
| Camera | Rocky Tsang Chun-Chung | Focus Puller |
| Lighting | Chan Sing-Hong | Best Boy Electrician |
| Costume & Make-Up | Chiu Wai-Ying | Costume Designer |
| Costume & Make-Up | Middi Yau | Makeup Artist |
| Directing | Stanley Chow Ying-Fan | Script Supervisor |
| Camera | Ho Kin-Kwong | Focus Puller |
| Art | Jeffrey Kong | Art Direction |
| Crew | Albert Yeung | Presenter |
| Costume & Make-Up | Chiu Wai-Ying | Wardrobe Master |
| Crew | Chi Shui-Tim | Pyrotechnician |
| Directing | 姚敏琦 | First Assistant Director |
| Crew | 董瑋 | Choreographer |
| Production | 宋岱 | Executive Producer |
| Production | Albert Yeung | Executive Producer |
| Production | 林炳坤 | Associate Producer |
| Production | 李錦文 | Associate Producer |
| Sound | Henry Lai Wan-Man | Original Music Composer |
| Art | 邱偉明 | Production Design |
| Costume & Make-Up | Middi Yau | Special Effects Makeup Artist |
| Production | 區椲麟 | Production Manager |
| Production | Andrew Chan Chin-On | Assistant Production Manager |
| Crew | Ringo Chan Chak-Hin | Post Production Supervisor |
| Production | Chan Tze-Fung | Assistant Production Manager |
| Sound | David Wong | Sound Designer |
| Lighting | Chiu Hung-On | Electrician |
| Editing | Edwin Van Huizen | Digital Intermediate Colorist |
| Art | Ching Wai-Yin | Property Master |
| Art | Keith Cheung | Props |
| Art | Chan Sin-Chi | Props |
| Art | Chan Tze-Leung | Props |
| Crew | 羅禮賢 | Stunt Coordinator |
| Production | Mei-Fun Mok | Production Supervisor |
| Production | Cheung Chi-Ho | Unit Manager |
| Art | 張國偉 | Storyboard Artist |
| Camera | 陳錦泉 | Still Photographer |
| Visual Effects | Yee Kwok-Leung | Visual Effects Director |
| Visual Effects | Alex Lim Hung-Fung | Visual Effects Director |
| Visual Effects | Eric Lai Man-Chun | Visual Effects Director |
| Visual Effects | Anna Wan Chi-Yin | Visual Effects Producer |
| Sound | 聶基榮 | Sound Designer |
| Sound | 聶基榮 | Sound Re-Recording Mixer |
| Sound | Phyllis Cheng | Sound Designer |
| Sound | Ip Siu-Kei | Dialogue Editor |
| Sound | Jason Fung Seng-Hang | Dialogue Editor |
| Sound | Michael Chiu Ka-Shing | Dialogue Editor |
| Sound | Jason Fung Seng-Hang | Foley Recordist |
| Sound | David Wong | Foley Editor |
