Chow Yun-Fat
Ken / Ko Chun
Carina Lau
Molly
Nick Cheung Ka-Fai
Mark
Shawn Yue Man-Lok
Vincent
David Chiang Da-Wei
Victor
Kimmy Tong Fei
Rainbow
Connie Man
Jackie [Interpol / Aoi's undercover agent]
Michelle Hu
Purple [Aoi's assassin]
Angela Wang
Yan
Kenny Wong Tak-Ban
Ben [Interpol]
Samantha Ko
Aoi's enforcer / Interpol undercover
Julio Acconci
Do Min-shui, Molly's companion
Jin Qiaoqiao
Aoi
Yuan Quan
Mark's Ex-Wife
