Shu Qi
Ai Lin

Zhao Wei
Ai Quan

Karen Mok Man-Wai
Kong Yat Hung

Song Seung-heon
Yen

Yasuaki Kurata
Master

Deric Wan Siu-Lun
Chow Nunn

Shek Sau
Chow Lui

Ben Lam Kwok-Bun
Ben

Henry Fong Ping
Lynn's Father

Nina Paw Hei-Ching
Lynn's Mother

Kam Hing-Yin
Captain

Josie Ho
Ching

Tats Lau Yee-Tat
Ghost King

May Kwong
May

Lam Sheung-Mo
Lai Kai-joe

Ricardo Mamood-Vega
Peter

Leo Ku
Man in Lift

Josephine Lam Kei-Yan
Alice

Jude Poyer
Killer of Lynn's Parent (flashback)

Leon Head
Benevolent Killer of Lynn's Parent (flashback)

Ben Yuen
Mr Yeung

Huang Kaisen
Wong Fat Chi/Armed Robber in Lift

Jiang Ke-Cheng
Lee Hong Fai/Elevator Killer

John Cheung Chan-Sang
Policeman

Kong Fu-Keung
Robber

Kenji Tanigaki
Hitman

Adam Chan Chung-Tai
Hitman

Kam Loi-Kwan