Simon Yam

Sergeant Wong Man-Chin / Dog Head

Tony Leung Ka-fai

Chan Chong-Shan / Hollow Man

Kate Tsui Tsz-Shan

Constable Ho Ka-Po / Piggy

Lam Suet

Ng Tung / Fatman

Maggie Shiu

Madam Fong

Eddie Cheung Siu-Fai

Chief Inspector Chan

Berg Ng Ting-Yip

Chan Chong-Shan's Gang Member

Wayne Lai Yiu-Cheung

Chan Chong-Shan's Gang Member

Samuel Pang King-Chi

Chan Chong-Shan's Gang Member

Susan Tse Suet-Sum

Master's Wife

Lau Kwok-Shing

Master

Wong Siu-Foon

IB Policeman

Au Hin-Wai

Senior Police Officer

Lo Chung-Him

Snakie

Frank Liu Zong-Ji

Chan Chong-Shan's Gang Member

Chan Kung

Chan Chong-Shan's Gang Member

Jimmy Wong

Officer Wo

Chiu Chi-Shing

Chan Chong-Shan's Gang Member

Hung Wai-Leung

Kidnapper

Pauline Yeung Yung-Lin

Cleaning Lady (uncredited)

Tam Kon-Chung

IB Policeman (uncredited)

Apple Chow Suk-Wai

Jewelry Store Clerk (uncredited)

Cheung Wing-Cheung

Loan Shark (uncredited)

Johnny Wong Yin-Ming

Man Eating in 7-Eleven (uncredited)

Sherwin Ming Tak-Fung

Sergeant Wong's Subordinate (uncredited)

Lee Long-Ming

Surveillance Unit Operator (uncredited)