行規
The System (1979)
Country: Hong Kong
Genre: Crime 
Release Date: 12/12/1979
 
Director
  Peter Yung Wai-Chuen
 
Script
  Peter Yung Wai-Chuen
  Lee Sai
 
Producer
  Sam Hui Chan-Sang
 
 
Cast
  Pai Ying (2) ... Inspector Chan
  Sek Kin (1) ... Tam
  Lisa Chiao Chiao ... Casino boss
  Chung Chi-Keung    
  Gwong Wai-Keung    
  Erwin Panos ... Sir Lance
  Peter Brent ... Senior cop
  Mike Lovatt ... Dan Smith
  Che Hung (3)    
  Mai Kei    
  Cheung Bing-Chan    
  Sham Chin-Bo    
  Nick Lam Wai-Kei    
  Ma Hing-Sang    
  Wong Si (2)    
  Wong Wai-Kwong    
  Yim Hon    
  Siu Siu-Ling    
  Wong Bing-Leun    
  Lau Man    
  Si Wing-Yuen    
  Tang Man-Yi    
  Mak Chan-Ming    
  Fong Suk-Ying    
  Yuen Sui-Chan    
  Chan Shui-Wo    
 
Production Company
  Trinity Asia Ltd.
 
Cinematographer
  Tom Lau Moon-Tong
  Peter Yung Wai-Chuen
 
Production Manager
  Richard Cheung Kuen
  Mai Kei
 
Art Director
  Oliver Wong Yui-Man
 
Editor
  Wong Yee-Shun (1)
 
Assistant Director
  Stanley Kwan Kam-Pang
 
Story
  Gam Bing-Hing
  Peter Yung Wai-Chuen
 
 
 
Summary
 

Inspector Chan is determined to crack a drug syndicate. He gets the goods on family man and drug addict/dealer Tam, and convinces him to become an informer. However, Tam betrays Chan and lets him down more than once. Chan persists with Tam, despite strong pressure from his skeptical superiors.