Nick Cheung Ka-Fai

Blue

Louis Koo

Shiu Chi-Long

Francis Ng Chun-Yu

Q sir/Inspector Q

Charmaine Sheh Sze-Man

Ding Siu-Ka

Benz Hui Siu-Hung

Foon Hei-Gor

Li Guangjie

Tung Pak-Ho

Zhang Huiwen

Siu Ying

Xing Yu

sniper / assassin

Cheng Taishen

Kwok Ming

Moses Chan Ho

Police superintendent

Louis Cheung

Guy blocking Blue at meeting

Clara Lee

Assassin

Ben Yuen Foo-Wah

Uncle Heen

Choi Kwok-Hing

Master Fung

Jade Leung Chang

Karina

Rebecca Zhu

Samantha, CIB detective

Jimmy Au Shui-Wai

Hong Sir

Timothy Cheng Chi-Sing

Lin Dongyou

Jason Wong

Kwok Ming's thug

Phat Chan

Lo Hoi-Pang

MJ Chan

Bob Lam Shing-Ban

Paco Yick Tin-Hung

Ken Law Ho-Ming

Andy Wong Chi-Man

Alice Fung So-Bor