Cast & crew
Undercover Duet (2015)
Directed by Mark Woo Yiu-Fai Written by Mark Woo Yiu-Fai, Lam Fung
Cast
| Ronald Cheng Chung-Kei | Dragon |
| Mark Woo Yiu-Fai | James |
| Ava Yu Kiu | Ho-Kwan |
| Yang Jianping | Gina's Killer |
| Wang Chuanjun | |
| Tony Ho | |
| Louis Cheung | |
| Peter So | |
| Tenky Tin Kai-Man | |
| Lau Kong | |
| Zhang Chi | |
| Sukie Shek Wing-Lei | Suki |
| Kaki Leung | |
| Barbie Liu | |
| Phat Chan | |
| Fung Hak-On | |
| Terry Zou Wen-Zheng | |
| Joh Chung-Sing | |
| Justin Cheung Kin-Sing | |
| Miki Yeung Oi-Gan | |
| Jackson Wan Kwong | |
| Timothy Cheng Chi-Sing | |
| Gregory Wong Chung-Yiu |
Crew
| Mark Woo Yiu-Fai | Director |
| Mark Woo Yiu-Fai | Screenplay |
| Lam Fung | Screenplay |
| Tenky Tin Kai-Man | Producer |
| Annie Sit Pui-Yin | Assistant Art Director |
| Julian Cheung Chi-Lam | Songs |