Andy Lau 
 as 刘健明

Tony Leung Chiu-wai 
 as 陈永仁

Anthony Wong Chau-Sang 
 as 黄志诚

Eric Tsang Chi-Wai 
 as 韩琛

Kelly Chen Hui-Lin 
 as 李心儿

Sammi Cheng Sau-Man 
 as Mary

Elva Hsiao 
 as May

Chapman To Man-Chat 
 as 傻强

Gordon Lam Ka-Tung 
 as 大B

Shawn Yue Man-Lok 
 as 少年陈永仁

Edison Chen 
 as 少年刘健明

Berg Ng Ting-Yip 
 as 张Sir

Wan Chi-Keung 
 as 梁警司

Dion Lam 
 as 迪比亚路

Tony Ho 
 as 疑犯

Courtney Wu 
 as Hi-Fi铺老板

Hui Kam Fung 
 as 警校校长

Chaucharew Wichai 
 as 泰国毒品买家

Au Hin-Wai 
 as 大象

Lee Tin-Cheung 
 as 孖八

Victy Wong Yin-Keung 
 as 重案组警员

Yiu Man-Kei 
 as 重案组警员

Benjamin Yuen Wai-Ho 
 as 重案组警员

Wong Chi-Wang 
 as 重案组警员

Cheng Wing-Yee 
 as 重案组警员

Mak Wai-Gok 
 as 重案组警员

Kui Mei-Yee 
 as 重案组警员

Tam Kon-Chung 
 as 重案组警员

Che Jan-Bong 
 as 重案组警员

Chin Yiu-Wing 
 as 重案组警员

Ho Chun-Hin 
 as 韩琛手下

Simon Yu Sai-Tang 
 as 韩琛手下

So Wai-Nam 
 as 韩琛手下

Lai Chi-Wai 
 as 韩琛手下

Jerry Leung Ho-Kai 
 as 韩琛手下

Terry Lee Ji-Ming 
 as 韩琛手下

Alex Lee Yip-Kin 
 as 韩琛手下

Chow Pok-Foo 
 as 韩琛手下

Hui On-Tat 
 as 高级陈警司

Ho Wing-Ning 
 as 警司

Simon Cheung Yuk-San 
 as 学校教官

Leung Chiu-Yee 
 as May女儿

Chang Kin-Yung 
 as Policeman

Lee Wah-Chu 
 as 总警司

Pauline Yeung Yung-Lin 
 as Nanny