Joyce Tang
Chan Sam Yuen (Joyce Tang) is promoted to the head of the Police Traffic Department. She and Ching Fung (Marco Ngai) are also now parents to a pair of girl/boy twins, but their marriage is not as happy as it seems as the two continue to have quarrels in their marriage. With marital problems at home Sam Yuen becomes a cold, unreasonable and mean boss at work. When a case similar to the psychotic serial rapist in the last series arises Sam Yuen starts feeling threaten and insecure even though the culprit Bao Gwok Ping is still locked up in jail. It seems Bao Gwok Ping has been communicating with someone on the outside who agreed to taking on his split personality persona and continuing his crime spree. Due to Sam Yuen's carelessness her son is kidnapped and killed by the new culprit. This causes Sam Yuen and Ching Fung's marriage to be in further jeopardy when he blames her for the death of their son.