When Hong Kong is rocked by multiple gruesome murders, the police forms a task force to investigate. Jun (Sean Lau), 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 fr...<!-- --> <a class="ipc-link ipc-link--baseAlt" role="button" tabindex="0" aria-disabled="false" data-testid="plot-read-all-link" href="plotsummary?ref_=tt_ov_pl">Read all</a>