Cast
- Andy Lau as 刘健明（刘Sir）
- Edison Chen as 青年刘健明
- Tony Leung Chiu-wai as 陈永仁（阿仁）
- Shawn Yue Man-Lok as 青年陈永仁
- Anthony Wong Chau-Sang as 黄志诚（黄Sir、黄警司）
- Eric Tsang Chi-Wai as 韩琛（琛哥）
- Gordon Lam Ka-Tung as 林国平（大B）
- Francis Ng Chun-Yu as 倪永孝
- Chapman To Man-Chat as 徐伟强（傻强）
- Roy Cheung Yiu-Yeung as 罗继贤