Andy Lau Tak-Wah as Detective Dee (Di Renjie)

Li Bingbing as Shangguan Jing'er

Deng Chao as Pei Donglai

Tony Leung Ka-Fai as Shatuo Zhong

Carina Lau Kar-Ling as Wu Zetian (The Empress)

Richard Ng Yiu-Hon as Wang Lu (before face-lift)

Teddy Robin as Wang Lu (after face-lift)

Liu Jinshan as Xue Yong (Crime Inspector)

Yao Lu as Li Xiao (The Duke)

Jean-Michel Casanova as Umayyad Ambassador

Sos Haroyan as Asst to Umayyad Ambassador

Wang Deshun as Xiazi Ling (Blind Prisoner)

He Shengming as Prison Officer

Huang Yonggang as Zhang Xun

Chen Xiao as Lu Li