Andy Lau as Lau Kin Ming

Tony Leung Chiu-wai as Chan Wing Yan

Anthony Wong Chau-Sang as Wong Chi Shing

Eric Tsang Chi-Wai as Hon Sam

Kelly Chen as Lee Sum Yee

Sammi Cheng as Mary

Elva Hsiao as May

Chapman To Man-Chat as Silly Keung

Gordon Lam Ka-Tung as Inspector B

Shawn Yue as Young Chan Wing Yan

Edison Chen as Young Lau Kin Ming

Berg Ng Ting-Yip as Senior Inspector Cheung

Wan Chi-Keung as Officer Leung

Dion Lam as Del Piero

Tony Ho as Suspect

Courtney Wu as Stereo Shop Owner

Hui Kam Fung as Cadet School Principal Yip

Chaucharew Wichai as Paul

Au Hin-Wai as Elephant

Lee Tin-Cheung as Double 8

Victy Wong Yin-Keung as CIB Team

Yiu Man-Kei as CIB Team

Benjamin Yuen Wai-Ho as CIB Team

Wong Chi-Wang as CIB Team

Cheng Wing-Yee as CIB Team

Mak Wai-Gok as CIB Team

Kui Mei-Yee as CIB Team

Tam Kon-Chung as CIB Team

Che Jan-Bong as CIB Team

Chin Yiu-Wing as CIB Team

Ho Chun-Hin as Sam's Follower

Simon Yu Sai-Tang as Sam's Follower

So Wai-Nam as Sam's Follower

Lai Chi-Wai as Sam's Follower

Jerry Leung Ho-Kai as Sam's Follower

Terry Lee Ji-Ming as Sam's Follower

Alex Lee Yip-Kin as Sam's Follower

Chow Pok-Foo as Sam's Follower

Hui On-Tat as SP Chan

Ho Wing-Ning as SP

Simon Cheung Yuk-San as Cadet School Instructor

Leung Chiu-Yee as May's Daughter

Chang Kin-Yung as Policeman

Lee Wah-Chu as Chief Insp.

Pauline Yeung Yung-Lin as Nanny