Simon Yam as Tsim Kin-Yip

Annie Liu Xin-You as Ann

Nick Cheung Ka-Fai as Kwan Ping-Man

Irene Wan as Pun Siu-Yuen

Maggie Shiu as Fong

Candice Yu On-On as Ann's mother

Pal Sinn Lap-Man as Ann's father

Vincci Cheuk Wan-Chi as Professor Teaching Electronics

Hiroshi Fukazawa as Toy Store Boss

Gordon Lam Ka-Tung as Fai

Benny Lau Wai-Hang as Officer Chan Fai

Gregory Charles Rivers as Duty Officer

Susan Shaw Yam-Yam as Professor of Poison

Leanne Foo Hiu-Mei as Policewoman Recording Crime Report

Jim Chim as Man in Wheelchair

Roderick Lam Chung-Kei as

Byron Chan as Policeman