Overview:POK wants TUNG to live with him so that TUNG can be better looked after. TUNG however would like to move back to his home village to enjoy a quiet life, which is what his wife was longing for when she was still alive. POK understands and supports TUNG’s decision. A guy named CHENG HIU-TUNG discovers a dead young woman when he goes for a morning run with his friend. POK and his team come to conduct a forensic investigation but unfortunately the evidence around has all been contaminated by the mud and the rain. YAU needs CHEUNG to follow up this case but CHEUNG asks to go on leave with dozens of excuses. YAU learns from the forensic test results that the semen left in the victim FONG OI-SHAN’s body contains no sperms. They detain a suspect for questioning and DNA extraction. YAU is informed that CHEUNG is almost knocked down by HIU-TUNG’s car and that HIU-TUNG gets beaten up by CHEUNG after the near-miss accident.… ...