When SAU is going to kill MIN, the police arrive. There is a gun fight. MAN protects YUNG with her body. SAU is killed. MAN is hurt seriously. Fortunately she recovers. However her legs are paralyzed. There is only fifty percent of recovery. YUNG looks after her as his life was saved by her. However CHIT is jealous. LUN's corpse is found on the stony beach of Tai Mong Tsai. For checking it is found that LUNG had taken sleeping pills before being killed by carbon monoxide. LUN is a keen gambler and this hobby always put him in financial difficulties. His wife is PO and KWAN is his secret lover. They have witness to prove that they were not with LUN when he was killed. LUN owns a saloon. PO works in a flower shop and KWAN is a taxi dancer. Before LUN was killed, the guard of the building saw a girl in red clothes came to drive LUN away. However he could not see the girl.

LIK, who is the partner of LUN, is suspected as the killer for three reasons. Firstly, his father runs a garage and thus LIK is good at car mechanics. Secondly LIK and LUN had quarrels over financial matters. Thirdly LIK and KWAN has filthy relationship behind LUN. However LIK has witness to prove that he was not with LUN when LUN was killed. The police go to question PO's family but no useful information is found. When they are on the way back to the headquarters, they meet a truck driver. His truck's tires went flat at Sap Shi Heung when LUN was killed. He saw a girl in red clothes driving a white car and leaving in a hurry. Thus they return to the scene where they find a burnt cigarette with lip prints on it.

However the case has not been solved. LUN was taken away by the girl in red at 8:00 p.m. and she was seen at Sap Shi Heung at 9:00 p.m. At 10:15 p.m. LIN was killed at Tai Mong Tsai. YI accompanies PO and her grandmother to home from hospital. YI finds an old photograph taken when PO was a student. YI suspects PO's classmates and thus he takes the photograph away. As the school has been pulled down, YI seeks help from computer experts. From the photographs, the recent appearance of the three students are projected. One of them is KWAN. As PO and KWEN were classmates, YI finds that KWAN's cigarette is the same as the one left at Sap Shi Heung. He also discovers that KWAN had stolen her neighbour's car which is white in color when LUN was killed. At last the police conclude that LUN was killed by KWAN and PO. KWAN and PO killed LUN as both were sent to hospital. When they met, they realized that both of them had been deceived by LUN.… ...