Before she died, BETTY called CHIT. BETTY told CHIT that she had the idea to kill the baby so as to get compensation from the insurance company. Luckily the baby is all right. CHIT also heard the music of a wind bell. CHIT recognizes that the music is the last piece in the department store. The police go to the department store and the shopkeeper recognizes BETTY and reports that she and a man came and bought the piece. CHIT finds the man but the shopkeeper firmly states that he is not the one. The man warns CHIT to mind her own business. It is found that BETTY's skin tissues was left in CHUNG's fingernails. The newspaper hawker also identifies her as the mysterious girl outside LIN's house. Thus it is clear that BETTY killed CHUNG for money. But why did she kill LIN? Moreover it is believed that BETTY did not kill herself. She was killed by the black hand who wanted to keep the secret. The man threatened CHIT is FAY.… ...