HIM appears at the crime location and she says that CHI LUN is the murderer. She then takes out photos of LUN quarrelling with CHOI. The team carries out investigation and they discover that CHOI dies after drinking milk that contains cyanide. The team continues investigation in CHIN’s house and they reveals to LUN that CHOI was not killed in the Jacuzzi… DING believes that LUN is not the murderer and he releases her but SING thinks that DING is being biased. DING meets the person who delivers milk and the person says that he met someone strange before. Somebody sprays red oil on LUN and LUN reveals to DING that the tycoon MO YAU LEUNG may have done it. This is because YAU LEUNG used to invest in a Vietnam chemical plant with CHOI but the factory closed down after an accidental explosion. YAU LEUNG is killed in a hotel after drinking red wine that contains cyanide.
