At first, Zhao Yu had prepared for the worst. He thought that not only had Division Chief Jiao backed Wu Fangfang up, but he also figured that the higher ups wanted to charge Tao Xiang with the crime, thus making him the psychotic serial killer, which is why the chief had forcefully called off his team's movements.
Although Tao Xiang's mental state was compromised and he wouldn't be able confess his crime, due to this same reason, the police could easily convict him with the crime! After all, the corpse heads and the metal box were right there, so no one would be against the statement that Tao Xiang was the murderer.
As of that moment, although the missing heads had been found, as the influence of the Headless Female Corpses Case was huge, the police didn't dare publicize it. Even the deceased victims' families had not been informed yet.