Two owners of a gambling club in London’s Chinatown are killed by an unknown killer. Edward (Lam), a policeman of heads the investigation. He arrives in Hong Kong to enlist the help of a prison convict, FM (Teddy Robin), who is a former friend of the two dead men.
| Actor | Role |
|---|---|
 George Lam Tsz-CheungInspector Edward Yip | Inspector Edward Yip |
 Cherie Chung Cho-HungAmy | Amy |
 Teddy RobinChiu Din Bao / Ping Pong Ball | Chiu Din Bao / Ping Pong Ball |
 Lo KinNot listed | Not listed |
 Calvin Poon Yuen-LeungNot listed | Not listed |
 Billy Lau Nam-KwongHK policeman | HK policeman |
 Angie ChenAmy's teacher friend | Amy's teacher friend |
 Raymond Fung Sai-HungHK prison warden | HK prison warden |
| WWa SukGambler | Gambler |
 Shing Fu-OnHong Kong Policeman | Hong Kong Policeman |
| JJon LaurimoreInspector | Inspector |