Johnnie To

Director

Sean Lau Ching-Wan

Inspector Lau Chun-Hoi

Carman Lee Yeuk-Tung

Carman

Tou Tsung-Hua

Gwan

Ruby Wong Cheuk-Ling

Bartender

Lee Chung-Wai

Amy

Shin Kam-Ching

Inspector Lau's Superior

Jimmy Wong

Sergeant Wah

Chiu Yue-Ming

Doctor

Alan Mak Siu-Fai

Waiter

Wong Jan-Fai

Lau's Team Police Officer