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.
Runtime: 1 hr 41 min
Starts: Andy Lau, Tony Leung Chiu-wai, Anthony Chau-Sang Wong, Eric Tsang, Kelly Chen, Sammi Cheng, Edison Chen, Shawn Yue, Elva Hsiao, Chapman To
Director: Andrew Lau, Alan Mak