Daniel Wu

as Inspector Chau Chung

Alex To

as Don

Ruby Wong Cheuk-Ling

as Don's Girlfriend

Jo Kok Cho-Lam

as Jane Chan

Samuel Pang King-Chi

as Sam

Chin Ka-Lok

as Chong Chin Ho

Joe Lee Yiu-Ming

as Brother Joe

Poon Chit-Yuen

as BJ

Allan Mo Kei

as Kee

Wong Wai-Fai

as Fai

Tony Cheung Shui-Chit

Clarence Cheung

Monica Lo Suk-Yee

as Monica

Michael Lieu

as Superintendent Chan

Joe Ma Tak-Chung

as Husband of Don's Girlfriend

Tony Ho

Jack Wong

Ben Yuen Foo-Wah

Gary Mak Wing-Lun