Overview:After a thorough investigation, HANG and his team discover that the prime suspect CHEUNG WAH-CHIU was actively involved in the electioneering campaign for KEUNG years ago during the District Council Election, which makes them believe that KEUNG is perhaps trying to return the favor by providing CHIU with an alibi. POK’s aunt KING CHI would like to match him up with a girl but the girl’s background does not really meet the expectations of his parents KING YIN and TSEUNG WAI-CHU. To find out why KEUNG did not hear the shots, HANG and LAI go to consult POK at his laboratory. POK agrees to offer help and has a site visit with them. HANG’s team finally manages to crack the case, which gives KIU a great thrill. To express her appreciation for her staff and POK, KIU invites them to a barbecue party at her mansion……