Before leaving Yokohama, Shuichi Hayashi and Aizawa made a special trip to visit the Komatsu Police Department again and presented two bottles of top-notch Junmai Daiginjo sake as a token of appreciation. Although the relationship between the Metropolitan Police Department and the Kanagawa Prefectural Police Headquarters is not harmonious, Lin Shuichi still hopes to establish some of his own connections in the Kanagawa Prefectural Police Headquarters. At the very least, when Ishihara's Hayato case reaches the Kanagawa Prefectural Police in the future, the Komatsu Police Department will not have any bad impression of Lin Shuichi because of this incident. Junmai Daiginjo is already one of the best sakes. When he received this gift, the Komatsu Police Department simply couldn't put it down, and Lin Shuichi exchanged contact information with the Komatsu Police Department, and he must contact him when he invites the Komatsu Police Department to Tokyo. When the two said goodbye to each other, the Komatsu Police Department had already regarded Lin Xiuyi as his junior.

However, on the way back, Lin Xiuyi still decided to report to the Shenmu Police Department about the work of the past few days. This trip to Kanagawa did not find the master thief hidden behind Ishihara Hayato, but Lin Shuichi became interested in Ishihara's social connections in Tokyo. Who sent him the package when he was in prison? If Ishihara is a relative or friend, is it possible that Ishihara has other places to stay during his stay in Tokyo?

When the phone was connected, Lin Xiuyi simply reported his activities in Yokohama to the Shenmu Police Department during this time. The Shenmu Police Department told Lin Xiuyi the latest progress of the search headquarters on the phone.

"Shuichi-san, we have conducted a thorough search of the place where Ishihara Hayato and Shin'ichi Nakamura lived in Tokyo. The luminol test showed that there were no obvious large amounts of blood in these two locations, and we have basically ruled out the possibility that this was the scene of the first crime, what about you? What have you found now?" The luminol test, also known as the luminescent ammonia test, which he talked about on the phone, is a method of identifying blood stains that cannot be observed by the naked eye at the site using chemical reagents. When the blood reacts with luminescent ammonia, it will fluoresce blue-purple, and the blood after reacting with luminous ammonia will not affect the subsequent DNA test. This test is highly sensitive, capable of detecting blood stains as small as one part per million. You must know that Shin'ichi Nakamura was killed by a direct blow to the back of the head with a blunt object. In this case, there will definitely be a large amount of blood splatters, and these blood stains will not be able to be cleaned up even if the suspect wipes and rinses them.

"Police, we just learned from the prison guards at the Yokohama Detention Center that Hayato Ishihara had received a package from Tokyo while he was in custody. So we suspect that he has close relatives or friends in Tokyo. If that's the case, I can't rule out that Ishihara has other places to stay, but I don't think Ishihara's background is at all qualified to complete 26 consecutive successful burglaries. This requires careful planning and a wealth of experience in committing crimes, which is not reflected in the backgrounds of Ishihara and Nakamura. These two people have known each other since they were in Yokohama, but both of them are small people in the criminal syndicate, how can they suddenly become masters after leaving Yokohama for Tokyo? I really don't understand!" Lin Xiuyi told the Shenmu Police Department what he felt was unnatural in his heart on the phone, and the Shenmu Police Department also fell silent.

"Anyway, you come back first, at least knowing that Ishihara and Nakamura have known each other for a long time, it can be regarded as a breakthrough! I'll try again to see if I can pry Ishihara's mouth open and make him spit out something!" In the final analysis, interrogation is a battle of psychological defense, and when the police coldly tell some hidden things about the suspect, the suspect will also guess in his heart whether the police have some other information that he does not want to expose. Many criminal suspects will have huge psychological pressure because of this, and with pressure, criminal suspects may completely collapse because of extreme emotional tension, and finally give up resistance. Or they may try to cover up their actions and inadvertently expose flaws, thus giving the police a new direction of investigation.

After talking to the Shenmu Police Department on the phone, Lin Xiuyi contacted Hua Xing, who was involved in the search of the series of thefts at the Sixth Headquarters, to learn about the progress there.

"The police department, our side is revisiting the scene and sorting out the evidence. So far, Ishihara's fingerprints have been found at three crime scenes. In addition to this, we also found traces of shoes found from Ishihara's house at four crime sites. The footprint report given by the research department shows that the wear marks of the shoes are basically the same as the wear marks on the footprints at the crime scene...... "Hanagata said in detail on the phone.

"Hanagata, let me just ask, has there been enough evidence found in the 26 cases now to convict Ishihara?" Lin Xiuyi asked impatiently.

"There is only one case of evidence chain that can prove that Ishihara was indeed involved, and the other cases are still being searched and sorted out!"

"Okay, Ishiata, communicate with the Tokyo District Prosecutor's Office, apply for continued detention of Ishihara, and apply for an investigation into Ishihara's financial situation, including Ishihara's bank accounts, debts, and other things. I want to know what drove him to commit a crime in Tokyo!" Hayashi instructed again. Now there are two groups of people in the Metropolitan Police Department who are following Ishihara's investigation. The Shenmu Police Department is for murder, and the sixth headquarters is for theft. If you go your own way, you will waste valuable search time. Therefore, Lin Xiuyi planned to ask the Sixth Headquarters to investigate the economic situation, while the Shenmu Police Department was to investigate social relations. In the end, the information from both sides was summarized to Lin Xiuyi for information sharing.

While the car was driving at the Daiichi Keihin Expressway, Lin Shuichi had been making phone calls to contact the people in charge of the Metropolitan Police Department. So far, the investigation into the theft case is on track, but there is still a long way to go to completely link the 26 cases with evidence. On the murder side, because all the clues are focused on Ishihara, only by breaking through Ishihara, a stumbling block on the road to search, can the investigation of the murder enter a new stage.