HOI reveals that he had stayed away from his gangster friends after meeting LONG’s mother CHING YEE. One day, KEUNG suddenly came and asked HOI to be his guarantor. HOI later discovered that KEUNG didn’t return the money and he had even got a mistress. HOI went to question KEUNG and hurt him accidentally. On the next day, KEUNG was died and HOI ran away to Taiwan to escape from the guilt. CHING goes to the elderly center to look for the witness CHU for investigation. CHU’s grandson tells CHING that another woman had came out of the murder location during that time. LONG and CHING review the past documents again. LONG suddenly gets extrasensory hints and sees a skeleton ring. HOI is released and he meets an old friend BILL. BILL tells him that he had revealed to KAM that KEUNG had committed adultery before KEUNG’s death. KAM’s son tells HOI that KAM is acting strangely in the past few days……