Private eye Chang Wen Chiang receives a telephone call from his girlfriend Li Lan Hsing. He rushes over and finds her dying in a pool of blood.
| Actor | Role |
|---|---|
 Ling YunChang Wen-Chiang | Chang Wen-Chiang |
 Lisa Chiao ChiaoYeh Chiung-ying | Yeh Chiung-ying |
 Chang Pei-ShanCui Fan-Ru | Cui Fan-Ru |
 Shirley HuangLi Lan-Hsing | Li Lan-Hsing |
 Lee Pang-FeiTung Tien-Hsin | Tung Tien-Hsin |
 Chuan YuanLi Hsin-Chien | Li Hsin-Chien |
 Lee Sau-KeiInspector Wang Huan-Wen | Inspector Wang Huan-Wen |
 Lan Wei-LiehWang Cheng | Wang Cheng |
| LLu Tso-HsinLiao Chuan-Hao | Liao Chuan-Hao |
 Siu Lam-WunLo Teng | Lo Teng |
 Angela Yu ChienLok Lu No | Lok Lu No |
| TTina Ti NaRuby | Ruby |
 James Tien ChunThug | Thug |
 Sammo Kam-Bo HungThug | Thug |
 Gam Tin-ChueHorse race visitor | Horse race visitor |