Kung-fu ace David Chiang displays a unique take on the narcotics racket in his directorial debut, The Drug Addict. Only 26-year-old and Shaw Brothers' youngest director, David brings a youthful sensibility to this drama about a drug-addicted kung-fu instructor (Ti Lung) who not only kicks the habit but smashes a drug smuggling ring as only a martial-arts superstar can. With legendary action director Chang Cheh onboard as producer, The Drug Addict is a fast-moving exploration of an important social issue.
| Actor | Role |
|---|---|
 Ti LungKuan Cheng-Chun | Kuan Cheng-Chun |
 Wong ChungTseng Chien | Tseng Chien |
 Louise Lee Sze-KeiYuan Li | Yuan Li |
 Paul Chun PuiTang Kuo-Liang | Tang Kuo-Liang |
 Lu TiSyndicate head | Syndicate head |
 Chiang TaoHsieh En | Hsieh En |
 Lee Hoi-SangLung Tai | Lung Tai |
 Fung NgaiInspector | Inspector |
 Tsang Choh-LamDrug dealer | Drug dealer |