This is an atypical police film from 1981 and an opportunity to see a younger Kent Cheng playing a policeman.
| Actor | Role |
|---|---|
 Wong ChungSgt. Terry Chen | Sgt. Terry Chen |
 Kent Cheng Jak-SiFatso | Fatso |
 Lung Tin-SangWeirdo / Ma Jian Ming | Weirdo / Ma Jian Ming |
 Ray LuiInspector Guan | Inspector Guan |
 Wong ChingBig Brother | Big Brother |
 Lam Shung-ChingPighead | Pighead |
| KKwan Kam-MingLong Hair | Long Hair |
| HHa Lin-SingNancy | Nancy |
 Choi King-FaiTerry's fiance | Terry's fiance |
 Keung HonMainlander | Mainlander |
 Chow Kin-PingDeng | Deng |
| TTony LeungHuang Niu De | Huang Niu De |
 Parkman Wong Pak-ManMing | Ming |
 Tony Leung Hung-WahNot listed | Not listed |