There was a knock on the office door, and the detectives returned. But seeing that they were empty-handed, Ma Tao immediately sighed, and sure enough, these criminal policemen who went to phone booths in various parts of Zhu City to retrieve surveillance video did not investigate anything. Upon inquiry, there were either no surveillance cameras near the public phone booths, or the security cameras were not oriented towards the public phone booths.

Ma Tao was depressed, I had already guessed that the clues could not come so easily, I told Ma Tao not to worry, we still have many other ways to go. I asked Ma Tao for the distribution of public phone booths where the phone numbers in Sun Xiang's mobile phone call records were located, and he had sorted them all out.

After receiving a document from Ma Tao's hand, I quickly flipped through it. There are so many phone numbers, most of them are local to Zhushi, and these criminal police have already checked them and found no valuable clues. The rest are from other cities in the province, Ma Tao has asked a friend to check, and he said that he should be able to get a reply within today.

I focused on the phone numbers of other provinces, and when I saw the provinces and cities behind the phone numbers, I frowned. Ma Tao only found out which province these public phone numbers belonged to not long ago, and he said that due to the large geographical span and relevant regulations, he could only communicate with the police stations in those places if he wanted to check.

I took out my phone and dialed Yang Fan's phone number. Several of the numbers in the call records belong to S County, and several others belong to G City and two other coastal provinces. These two places have left an indelible impression on me, if it is just a place, it can be said to be a coincidence, but if even the time coincides, it is not a coincidence.

The time when Sun Xiang was on the phone with the public telephone booths in G City and S County happened to be during the period when the case of the woman in red in G City and the Qiu Xinghua case in S County had not yet been dialed.

Finally, Yang Fan answered the phone, I put forward my request straight to the point, Yang Fan readily agreed, asked me to report the phone number to him, and he immediately sent someone to investigate. After reporting the phone number, Yang Fan told me about Zhu Li's condition, Zhu Li's mental condition is getting worse and worse, and the intermittent psychotic symptoms have gradually evolved into non-stop mental abnormality. He asked me if I still needed to monitor Zhu Li, and I thought about it and gave him an affirmative answer.

After hanging up, I dialed Shen Nuo's number again. Lao Zhang is dead, and the only police officers in G City I know are Zhao Da and Shen Nuo, I can't trust Zhao Da, so I can only call Shen Nuo. Shen Nuo listened to my request and said that she would immediately ask a police friend to do it.

Ma Tao was surprised that I was able to communicate with the police forces in the two places so quickly, and he expected me to solve the remaining two coastal cities. I shook my head helplessly, saying that I couldn't handle the police stations in these two places, and Ma Tao had to call in person in the name of the police force to help.

Ma Tao nodded, and said that he would start to act as soon as the written notice of the joint investigation and cross-local assistance was given.

We sat in Ma Tao's office waiting for news, and in the evening, I walked outside the door and lit a cigarette. The weather was nice, and the smoke slowly drifted up the air until it dissipated. Xu Yi didn't know when she walked behind me, although I haven't said it yet, but she has already noticed the provinces and cities of those phone numbers and the time of the call.

After smoking, the person from the identification department entered Ma Tao's office with a transparent plastic bag, and when I saw something in the office, I immediately stepped on the cigarette butt and followed in. The transparent plastic bag contained the set of keys that Sun Xiang had dropped beside him before he died, and I thought this set of keys was very strange, so I asked Ma Tao to bring it back for identification.

The appraiser handed the bag to Ma Tao, saying that only Sun Xiang's fingerprints and sweat DNA were found on the key, and there was nothing strange about it. Ma Tao took the key and waved his hand to let the appraiser go out, Ma Tao picked up the transparent plastic bag and shook it in front of him, and asked suspiciously: "Sun Xiang has only a few doors in his house, why does he use so many keys?" ”

Originally, I thought it was the key to Sun Xiang's original residence, but in this way, there are still more than a dozen keys. These keys are relatively large, not like cabinets or extraction keys, after Ma Tao observed, he also thought that these keys should be the door or big lock.

The expert came to the conclusion that the key had nothing to do with the Qian Er case and Sun Xiang's case, so Ma Tao thought about it and threw the key directly to me. He said that the key must be quirky, maybe it had something to do with what I wanted to check, so he asked me to put the key away, I thought about it, and I didn't refuse.

It wasn't until it was almost dark that the police stations in other cities in the province called Ma Tao back. As I expected, no clues were found in other cities, including Guangdong. Ma Tao pounded the table angrily, cursing the man in his mouth was too cunning.

When I returned to the hotel in the evening, I also got a reply from Shen Nuo and Yang Fan, and it was Shen Nuo who called first. I was amazed at her speed, it was only more than three hours after I asked her for her that she brought me the news, although Shen Nuo didn't find anything, but I think she must have done her best. At eleven o'clock in the evening, Yang Fan also sent me a message, and the result was the same, there was still no camera found near the public phone booth.

There are no cameras near all the public phone booths, and these series of survey results are enough to show that the other party deliberately chose a place that could not be captured by the surveillance to talk to Sun Xiang, which reminds me again of the mysterious man who called me, and every time he called me, he ended up with no trace.

"Could it be the same person?" Xu Yi asked.

I nodded, "Possibly." ”

When the case of the woman in red and the Qiu Xinghua case occurred, the person who spoke on the phone with Sun Xiang was also in G City and S County respectively, and if everything is related, they may indeed be the same person. But there is also a possibility that so many phone numbers in Sun Xiang's call records were called by different people, after all, we have no evidence that those calls were all from the same person.

The trail of public phone booths seems to be about to be broken, and now only those two coastal cities remain.

There were still many things to do the next day, Xu Yi and I were just about to go to sleep, the phone rang again, I picked up the phone and saw that it was Meng Ting calling. Look at the time, it's close to zero, Meng Ting called so late, there must be something urgent, I picked it up as soon as possible.

As soon as the phone was connected, Meng Ting called me very politely, and before I could speak, she told me that she was going to get married at the beginning of next month, and I was speechless in surprise. Meng Ting had already told me that she was going to get married, but she had told me that the wedding date would be a few months later.

It is said that it is the beginning of next month, but it is only more than ten days away.

"Why are you in such a hurry?" I put away my surprise and asked.

Meng Ting: "Anyway, we have to get married, so it's better to get married earlier." ”

There was no emotion in every word Meng Ting said, and when I heard her speak, I would feel inexplicably sad. I really wanted to tell her that although Du Lei died for nine lifetimes, he may not really be dead, but when the words came to my mouth, I swallowed them back into my throat. Meng Ting is not small, she has waited for Du Lei for so many years and wasted so much youth, I have no way to make her wait any longer.

"You must come...... And Xu Yi...... If you're not in City B, I won't send the invitation. Meng Ting hung up the phone after speaking. I sat on the edge of the bed in a daze for a long time, without saying a word, Xu Yi hugged me from behind and asked me what was wrong.

I told Xu Yi about Meng Ting's marriage, Xu Yi lamented, and when she talked about Du Lei, Xu Yi cried again. Xu Yi cried and I was also very sad, I remembered the years when the three of us spent together in the police academy, the memories are very good, but things are not people.

The next day, we went to the police station with Jiang Jun, and as soon as we stepped into Ma Tao's office, Ma Tao told us that the written notice of joint investigation and cross-border assistance had come down, which meant that we could start a large-scale investigation. Ma Tao was very happy and immediately faxed the notice to the police stations in the two coastal cities.

Subsequently, Ma Tao called and put down the phone, Ma Tao said with a smile that with the order, communication becomes very easy, and the results of the investigation are expected to come within half a day.