Eyewitnesses of Father and Son Detectives

A murder occurred in the old city of the French Concession in Shanghai. At the scene of the crime, in addition to the deceased Uncle Cai, there was also Lan Miaoru, the announcer of Shanghai Huasheng Radio who was injured and unconscious. Lan Miaoru is blind and has been renting in Uncle Cai's house for a long time and has frequent contacts with Uncle Cai. After the murder occurred, Detective Chen Henry of the patrol room brought his son Chen Tiansheng to the scene to investigate. Judging from the results of the on-site investigation and Lan Miaoru's memories after waking up, Tiansheng believes that the murderer should be two people, and Lan Miaoru is the "eyewitness". Lan Miaoru is the idol of Inspector Chen's wife. After Lan Miaoru was discharged from the hospital, Mrs. Chen took her to her home and placed her in her son's natural room. Judging from Lan Miaoru's reaction while eating and her expression in the dark, Tiansheng felt that there seemed to be something wrong with Lan Miaoru as a "witness". Miaoru went to work at the radio station when she got better. With the concern of media reporters, Lan Miaoru persuaded the two murderers to surrender. Media reports aroused the anger of the murderers Jiang Tao and Bao Zi, and also brought about the murder of Lan Miaoru. As the moon rises above the treetops, Lan Miaoru returns to Uncle Cai's apartment and is attacked. The body of Fang Wenhua, who runs a casino underneath the apartment, is left at the scene. Uncle Cai's case has not yet progressed. Fang Wenhua was murdered again, and items left at the scene showed that the murderer was the same...