Professor Yu says he has seen Autumn Cicada before and says that he can play the piano. Miyamoto Cangye wants Professor Yu to pick out the spy. Ye Chong guesses that Professor Yu is being kept at the hotel. Dr. Wu goes home and gets caught by Tang Feng. Ye Chong agrees to participate in Miyamoto Cangye's sting operation so he can rescue Professor Yu. Tang Feng sees Xue Ping and follows her during the day of their rescue attempt. The Communists can't get to the fourth floor to rescue Professor Yu because the fourth floor has been blocked off. Professor Yu carefully examines each suspect for signs of being Autumn Cicada. Right when he is considering Ye Chong, a wild gunshot causes chaos. Bombs going off gives Ye Chong a chance to grab Professor Yu and escape, however Professor Yu ends up getting shot and dying anyways.