HEI takes YIN to a cliff by force. He demands YIN’s explanation for the false imputation YIN made against him. They become entangled and fall into water. Later, police finds YIN unconscious on a beach. Luckily, no serious injuries are found after YIN is hospitalized. YIN?gets?the file of LEUNG's murder case?through a friend,?and?starts?searching for clues to find out?who is the true murderer. HEI becomes a suspect in a car?attack and an arson attack?on YIN's office.?Soon, YIN realizes that HEI is not the one who has caused the damage when he discovered a lighter dropped at the scene. YIN recalls that Steel Teeth, LI TSAU-SHUI's?subordinate, has a similar lighter. The criminal arrest finally proves that HEI has no connections with the incidents. It is believed that HEI is still alive. YIN begins to suspect YIP is the murderer after?he has learnt from?SZE?that YIP knew LEUNG before.… ...