 Tony Leung Chiu-waiChan Wing-yan | Chan Wing-yan |
 Andy LauSenior Inspector Lau Kin-ming | Senior Inspector Lau Kin-ming |
 Leon Lai MingSuperintendent Yeung Kam-wing | Superintendent Yeung Kam-wing |
 Chen DaomingShadow Shen Cheng | Shadow Shen Cheng |
 Anthony Wong Chau-SangSuperintendent Wong Chi-shing | Superintendent Wong Chi-shing |
 Eric Tsang Chi-WaiHon Sam | Hon Sam |
 Kelly Chen Hui-LinDr. Lee Sum-yee | Dr. Lee Sum-yee |
 Sammi Cheng Sau-ManMary | Mary |
 Carina LauMary Hon | Mary Hon |
 Edison ChenYoung Lau Kin-ming | Young Lau Kin-ming |
 Yue Man-lokYoung Chan Wing-yan | Young Chan Wing-yan |
 Eddie Li Yu-YeungYoung Yeung Kam-wing | Young Yeung Kam-wing |
 Chapman To Man-ChatTsui Wai-keung | Tsui Wai-keung |
 Waise Lee Chi-HungSergeant Chan Chun | Sergeant Chan Chun |
 Gordon Lam Ka-TungInspector B | Inspector B |
 Berg Ng Ting-YipSenior Inspector Cheung | Senior Inspector Cheung |
 Wan Chi-KeungOfficer Leung | Officer Leung |
 Vincent Wan Yeung-MingNightclub Manager | Nightclub Manager |
 Au Hin-WaiOCTB Officer | OCTB Officer |
 Courtney WuStereo Shop Owner | Stereo Shop Owner |
 Mason ChiuIA Officer | IA Officer |
 Benjamin Yuen Wai-HoCIB Officer | CIB Officer |
| LLam Chi-TaiIA Officer | IA Officer |
| CChan Shek-KongUncle Chan | Uncle Chan |
| CChan Kwok-WingSP | SP |
