When Hong Kong is rocked by multiple gruesome murders, the police forms a task force to investigate. Jun, once a brilliant detective who suffered a mental breakdown, begins his own investigation. Eventually, the police learn that the murder victims are all suspects of cold cases being rubbed out by a figure known as "The Sleuth". Now, Jun and a detective from the task force are on a race against time to beat the brutal killer at its own game.
Sean Lau Ching-Wan
Raymond Lam Fung
Charlene Choi Cheuk-Yin
Tan Kai
Carman Lee Yeuk-Tung
Carlos Chan Ka-Lok
Kathy Tong Yee
Jeana Ho Pui-Yu
German Cheung Man-Kit
Edward Ma
Tony Wu
Hedi He Guoxuan
Kevin Chu Kam-Yin
Ma Ruihan
Kumer So
Imran Ali Khan
Li Jing
Chen Bing
Stephanie Che Yuen-Yuen
Timmy Hung Tin-Ming
Cao Jun
Wei Binghua
Guo Ye
Terence Tung
Otto Chan Chi-Kin
Deep Ng Ho-Hong
Aaron Chow
Leung Ho-Kai
Angus Yeung Tin-Yue
Miu Him
Zheng Xutao
Ma Ruihao
Kelvin Liu
Summer Leung