Shu Qi as Ai Lin

Zhao Wei as Ai Quan

Karen Mok as Kong Yat Hung

Song Seung-heon as Yen

Yasuaki Kurata as Master

Deric Wan as Chow Nunn

Shek Sau as Chow Lui

Ben Lam Kwok-Bun as Ben

Henry Fong Ping as Lynn's Father

Nina Paw Hei-Ching as Lynn's Mother

Kam Hing-Yin as Captain

Josie Ho as Ching

Tats Lau as Ghost King

May Kwong Man-Chun as May

Lam Sheung-Mo as Lai Kai-joe

Wong So-Bik as May

Ricardo Mamood-Vega as Peter

Leo Ku as Man in Lift

Josephine Lam Kei-Yan as Alice

Michael Wai Chi-Ho as Ma Siu Ma

Dave Taylor as Killer of Lynn's Parent (flashback)

Jude Poyer as Killer of Lynn's Parent (flashback)

David John Saunders as Killer of Lynn's Parent (flashback)

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

Ben Yuen Foo-Wah as Mr Yeung

Huang Kaisen as Wong Fat Chi/Armed Robber in Lift

Jiang Ke-Cheng as Lee Hong Fai/Elevator Killer

John Cheung Chan-Sang as Policeman

Kong Fu-Keung as Robber

Kenji Tanigaki as Hitman

Adam Chan Chung-Tai as Hitman

Johnnie Guy as Conference Chairman (uncredited)

Lee Ga-Hung as Hitman/Bodyguard (uncredited)

Kam Loi-Kwan as