Tony Leung Chiu-wai

as Dr. Lau Mack

Sean Lau Ching-Wan

as Chiu

Andy Hui Chi-On

as Dr. Sam So

Christy Chung Lai-Tai

as Jamie

Alex To

as Dr. Roger Jaw

Hilary Tsui Ho-Ying

as Zin

Eileen Tung Oi-Ling

as Lok Mei

Law Kar-Ying

as Wong Jau

Gigi Leung Wing-Kei

as May

Richard Ng Yiu-Hon

as Professor Bao

Law Kar

as May's Father

Jordan Chan Siu-Chun

as Tattoo Choir's Conductor

Lawrence Ng Kai-Wah

as K.T.

Jessica Chau Ching

as Fung

Wong Hei

as Tiger

Farini Cheung Yui-Ling

as Nurse

Wyman Wong Wai-Man

as Brother Fook

Jerry Lamb Hiu-Fung

as Tong Ching

Jimmy Wong

as Secretary Pak

Winston Yeh Ying-Wen

as Hospital Chief

Benjamin Chan Siu-Kwan

as Hospital Assistant Chief

Mike Lau Wang-Bok

as Mikey

Jeff Li

as Student

Adrian Kwan

as Tak

Chan Ka-Him

as Kent

Dang Wing-Yiu

as Tattoo Choir's Member

James Cheung

as Tattoo Choir's Member

Jacob Cheung Chi-Leung

as Tattoo Choir's Member

Ben Luk Man-Wah

as Tattoo Choir's Member

Benny Tse Chi-Wah

as Tattoo Choir's Member

Samuel Leung Cheuk-Moon

as Fook's Thug

Chu Ga-Yiu

as Robber

Kwok-Choi Cheung

as Robber

Tsang Kit-Ying

as Ah Chi

Emana Leung Yuen-Man

as Hooker

Jason Chu Wing-Tong

as Missionary

Yu Jun-Fung

as Reporter

Suen Ga-Man

as Chairman of Medical Review Board

Stephen Wong Wai-Him

as Chi's Father

June Chan Kei

as Roger's Student

Yu Ngai-Ho

as Medical Review Board