Nick Cheung Ka-Fai

as Wong Yuen-yeung

Simon Yam

as Inspector George Lam Ching-chung

Kay Tse

as Ying Au-yeung

Janice Man Wing-San

as Zoe Tsui

Michael Wong

as Han Tsui

Candice Yu On-On

as Mrs. Tsui

Shawn Dou

as young Wong Yuen-yeung

Gordon Liu Chia-Hui

as Retired CID officer

Wong Ka-Lok

as Young George Lam

Jun Kung

as Former acquaintance of Eugene

Tian Zhuangzhuang

as Former prison guard

Cheung Kwok-Keung

as CID

Felix Lok Ying-Kwan

as Chief Yu

Ken Hung

as Zoe's classmate

Cherry Ngan Cheuk-Ling

as George's daughter

Cyrus Chow

as Eugene's younger brother

Yumiko Cheng Hei-Yi

as George's late wife

Hinson Chou Tsz Yeung

as Detective Keung

Phat Chan

as Detective Phat

Six Luk Ho-Ming

as Coroner

Clifton Kwan

as Detective

Mike Leeder

as British Senior CID officer

Ken Lo Wai-Kwong

Mason Chiu

as Correctional Services Officer

Paul Chun Pui