Date of Releases : 12 December 2002 (Hong Kong)

Director : Wai-keung Lau (as Andrew Lau) , Alan Mak

Writers : Alan Mak, Felix Chong

Star Cast: Andy Lau, Tony Leung Chiu Wai, Anthony Wong Chau-Sang

Brief: A story between a mole in the police department and an undercover cop. Their objectives are the same: to find out who is the mole, and who is the cop.

Rating: Rated PG