Infernal Affairs
An undercover cop spends 10 years infiltrating one of Hong Kong's most notorious Triad gangs, while a corrupt officer works as a mole for the gang. Each knows the other exists, but not their identity, and the race is on for each to expose the other.
Starring
Tony Leung Chiu-Wai, Andy Lau, Anthony Wong Yiu-Ming
Director
Andrew Lau Wai-Keung, Alan Mak