跟蹤

任達華

Sergeant Wong Man-Chin / Dog Head

梁家輝

Chan Chong-Shan / Hollow Man

徐子珊

Constable Ho Ka-Po / Piggy

林雪

Ng Tung / Fatman

邵美琪

Madam Fong

張兆輝

Chief Inspector Chan

吳廷燁

Chan Chong-Shan's Gang Member

黎耀祥

Chan Chong-Shan's Gang Member

彭敬慈

Chan Chong-Shan's Gang Member

謝雪心

Master's Wife

劉國誠

Master

黃素歡

IB Policeman