KWAN-LEUNG’s parents come to the police station to see HANG. They insist that KWAN-LEUNG’s death is not a coincidence but the result of a conspiracy. LAI and PAK-CHU go to see CHOW HUNG, the fortune-teller who practiced divination for KWAN-LEUNG before his death. To their great surprise, HUNG is actually the father of CHOW SAI-YUE, a very good friend of KWAN-LEUNG. While performing a Taoist ritual for the dead in the suburb of Yuen Long, a group of citizens are shocked to find a mysterious tool box under the ground, inside which are some bullets and appliances. HANG goes to question YUE at the hospital and YUE admits killing KWAN-LEUNG almost straight away. Although YUE has confessed to the murder, the way how he killed KWAN-LEUNG still remains a secret……