Cast: Tony Leung, Andy Lau, Anthony Wong, Eric Tsang, Chapman To, Lam Ka Tung, Ng Ting Yip, Wan Chi Keung
Two Hong Kong police officers -- one a gang mole on the force and the other an undercover cop in the gang -- share the same objectives and find their destinies intertwined.
Andrew Lau, Alan Mak
Studio: Alliance Films
Producer(s): Andy Lau
Screenplay: Alan Mak, Felix Chong
Official Site: www.infernalaffairs.com