In 1934, agents of the Kuomintang government round up suspects and torture them to find out which one is an undercover communist spy.
| Actor | Role |
|---|---|
 Tony Leung Ka-faiWang Feng | Wang Feng |
 Lin Chi-lingZhao Biwei | Zhao Biwei |
 Gillian ChungSu Je | Su Je |
 Vivian WuXiaohong's Mother | Xiaohong's Mother |
 Kent Cheng Jak-SiYu Dachuan | Yu Dachuan |
 Zhao YangLi Guisheng | Li Guisheng |
 Christopher LeeSun Yiyu | Sun Yiyu |
 Meng Ting-yiWang Xiafen | Wang Xiafen |
 Lü YulaiXiao Xiao | Xiao Xiao |
 Su JinShi Jingdong | Shi Jingdong |
 Kaiser ChuangNot listed | Not listed |
 Liu LujiaXiao Hung | Xiao Hung |