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.
劉青雲
as Lee Chun
林峯
as Fong Lai Shun
蔡卓妍
as Yee Chan
谭凯
as Auyeung Kim
李若彤
as Wong Yan
Carlos Chan Ka-Lok
as Tsai Ka Chu
Kathy Tong Yee
as Yeung Lai
何佩瑜
as Lynn Cheung
張文傑
as Cheung Yan Kit
馬志威
as Ma Tsz Wai
Tony Wu
as Tsang Cheuk Tong
何果軒
as Lo Kwo Hin
