Sek Kin as Kiu Yat-Po

Walter Tso Tat-Wah as Chief Insp. Liu Tat

Yu So-Chau as Inspector No. 5

So Siu-Tong as Wong San-Chi

Lee Suen as Koo Mei-Chi

Lee Pang-Fei as Yau Fong-Yan

Chan Wai-Yue as Mrs Yau/Koo Mei-Ling

Lai Kwan-lin as Ah Yi

Chu Yau-Ko as Detective A