YIP TING visits Professor WONG again but she is being rejected. She meets YAU-CHING instead who is visiting Professor WONG as well. The Hospital Authority reports to ATF that people who were in touch with the birds are poisoned by thallium. YAU-CHING discovers that SUK-FAN is on the list. YIP TING discovers that the Hospital Authority has located all patients suffering from thallium poisoning to the same hospital and she meets YAU-CHING's mother there. In order to hide away from the Scaredy Bird, Professor WONG and his assistant decide to leave Hong Kong but the Scaredy Bird captures Professor WONG's assistant. YIP TING meets Professor WONG again and she helps him to escape. YAU-CHING and WANG-LEUNG wait at the hotel. They finally meet the Scaredy Bird's spy and they start a gunfight. In order to escape, the Scaredy Bird captures YIP TING as a hostage and runs away by car. YAU-CHING follows them by car.