Tony Leung as Chan Wing Yan

Andy Lau Tak-Wah as Lau Kin Ming

Eric Tsang Chi-Wai as Hon Sam

Anthony Wong Chau-Sang as Wong Chi Shing

Kelly Chen as Lee Sum Yee

Sammi Cheng Sau-Man as Mary

Elva Hsiao Ya-Hsuan as May

Chapman To Man-Chat as Silly Keung

Gordon Lam Ka-Tung as Inspector B

Shawn Yue Man-Lok 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 Dik-On 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

Addy Sung Gam-Loi 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 Chung-Wai 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

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