Cast & crew
The Masked Prosecutor (1999)
Directed by Herman Yau Written by Kee-To Lam, Nam Yin
Cast
| Louis Koo | Hiu Wor |
| Blackie Ko Sau-Leung | Wan Jung |
| Grace Yip Pui-Man | Siu-Foo |
| Jessica Hsuan Huen | Chi Chi |
| Wayne Lai Yiu-Cheung | Cheung |
| Lo Meng | Chok |
| Tony Ho | Robber |
| Frankie Ng Chi-Hung | Meng |
| Jordan Chan Siu-Chun | Kai |
| Jazz Lam Tsz-Sin | Teenager |
| Michael Tse Tin-Wah | Chi Chi |
| Man Sai | CID |
Crew
| Herman Yau | Director |
| Sharon Yeung | Producer |
| Kee-To Lam | Writer |
| Macy Yik | Script Supervisor |
| Frankie Ng Chi-Hung | Executive Producer |
| Jay Chou | Songs |
| Nam Yin | Executive Producer |
| Ken Yip Wing-Kin | Choreographer |
| Nam Yin | Writer |
| Brother Hung | Music |