All Cast
Sean Lau
Inspector Song Donglu
Nicholas Tse Ting-Fung
Captain Guo Zhui
Yang Mi
Little Skylark
Wu Gang
Police Chief Jin
Jing Boran
Xiaowu
Gao Hu
NPA senior officer
Jiang Yiyan
Fu Yuan
Chin Ka-Lok
Wu Zhongguo
Yumiko Cheng
Li Jia, forensic doctor
Wang Ziyi
Wang Hai
Johnson Yuen Tak-Cheung
Nan Cheng
Benz Kong To-Hoi
Mr Huang, Sulfur manufacturer
Liu Kai-Chi
Mr Ding
Zhang Heng
Female reporter
