remnants

"I have no way of tracking the anonymous phone when it is off, but as long as it is on, or has been on, I can capture where its signal appears."

Mu Xi Ze was sitting on Nie Qing's seat, and was explaining to Su Ji and Liu Jinghua while moving the mouse.

Seeing Nie Qing approaching, Su Ji made room for him and motioned him to come over and take a look.

"What did you find?" Nie Qing asked after approaching.

Musize called up a webpage like a web page, which displayed six items in English, including his own number, dial-in and dial-out status, call start time, call end time, call duration, and the other party's number.But the number of lines below is only two lines in total.

Mu Xize moved the mouse to the first column and said, "Look, Team Leader Nie, here is the number of this anonymous phone, and the number on the far right is the number he dialed. I have checked it just now. , those two numbers are Dean Su's office number and Director Qiu's mobile phone number."

Nie Qing leaned on the table, leaned over and stared at the screen, "The first call was made at [-]:[-] p.m. on October [-]st, and the second call was made at [-]:[-] p.m. on October [-]th. , the two calls were made just before the case happened, and they both came from the same anonymous phone... It seems that the murderer who killed President Su and the murderer who killed Qiu Ruimin were indeed the same person."

"Actually, although the phone in Dean Su's office has undergone special confidentiality treatment, it is not impossible to find out the call records. If this method can be used to trace the anonymous call earlier, the police will Then we can find the signal sent by the mobile phone in time and rush to protect it in time, so maybe Director Qiu will not die." Mu Xize said full of regret.

Nie Qing couldn't hear the hidden meaning of accusing the police of ineffectiveness in his words, she couldn't help but frowned, but she didn't refute.

They did try to investigate the phone number in Su Yongdeng's office at the beginning, but because the phone was processed specially, the technical department couldn't figure it out after thinking about it for a long time.In addition, Fu Mingjie believed at the time that the murderer might not have called Dean Su before committing the crime. Instead of wasting time and energy on a clue that is uncertain whether it is useful, it is better to concentrate on doing something that is more likely to be effective. matter, so the matter about the phone was put on hold.

If Mu Xi Ze had joined in earlier...

This thought flashed across Nie Qing's mind, and quickly disappeared.

Regret is meaningless, Nie Qing told herself.

So he pretended not to understand Mu Xi Ze's implication, and asked, "Can you confirm the place where the call was made?"

"It's confirmed." Musize minimized the form, displayed a satellite map of Pingcheng, and then clicked the two small red circles on the map with the mouse and said: "These are the two places. Call The location of Dean Su’s phone call was 1 meters away from No. 200 Civilian Hospital; and the location of the phone call to Director Qiu was in the parking lot of the Fifth Affiliated Hospital.”

When Mu Xi Ze said this, his face became quite serious. He seemed to suddenly think of something, and suddenly looked up at Su Ji, and said to him: "Xiao Ji, can you buy me a cup of coffee at Starbucks? The one two streets away."

Su Ji was slightly taken aback, then understood, nodded cooperatively and said, "Okay, what do you want?"

"Black coffee is fine, no sugar or milk." Muxi Ze smiled softly at him.

Nie Qing resisted not giving him a blank look, and said, "Bring me a cup too, it's the same."

"Hmm. Anyone else want coffee?" Su Ji looked around and asked.

"I'd like a cup. I'm sorry, Director Su." Liu Jinghua raised his hand and said.

Zhu Zuwei followed up, "Then I'll take a ride too, and ask for a glass of sugar and milk, thank you Director Su."

Seeing this, Luo Qi hurriedly yelled: "Me, me! And me! I want it too! Add more milk and sugar—"

"You want to be a fart, you are getting more and more unconscious." Before he finished speaking, Nie Qing patted him on the head, and then said: "Go with the secretary, help get coffee, and buy some more by the way After eating, everyone should not have eaten at noon."

"Oh...Understood..." Luo Qi rubbed his head, looked like "I was wrong", then turned his head and said to Su Ji respectfully: "Director Su, please go first, I will walk behind you."

Su Ji couldn't help but smiled helplessly, glanced at Nie Qing and Mu Xize, nodded and said, "Okay, then I'll go."

Nie Qing and Mu Xize said "hmm" at the same time, and watched him go out. They looked at each other, and then shifted their eyes back to the screen tacitly.

Of course, everyone here could tell that Mu Xi Ze didn't want to talk about Su Yongdeng's case in front of Su Ji just now.

Seems to be quite caring and attentive.

"Let's continue," Nie Qing said at this time, looking at the map, "Since you know the location and time of the murderer's call, you should try to call up all the surveillance images in the vicinity to see if you can find something suspicious. figure."

"It's not difficult to do this, but I don't think there will be any gains." Muxi Ze said while operating.

"Why do you say that?" Nie Qing asked.

Mu Xi Ze looked up at him and said, "Captain Fu told me before that all the monitors in the parking lot where Director Qiu was killed were out of order a week before the incident. I don't think this is a coincidence."

When Nie Ting heard that his speculation was in line with his own, he couldn't help becoming a little interested, and said in a slightly questioning tone: "Continue to talk about your opinion."

"Me?" Mu Xi Ze was a little surprised when he heard the words, "I'm just a technical person, how can I have any opinions. I just happened to have such a conjecture just now, so I said it."

When Mu Xi Ze said this, he acted very naturally, but in Nie Qing's eyes, it was more like a perfect acting skill.The more similar he acted, the more Nie Qing felt that there was something wrong with him.

Although the suspicion of Mu Xi Ze as the murderer can basically be ruled out now, in Nie Qing's heart, he is still not an innocent character.

At this time, Mu Xize saw that Nie Qing was still staring at him, with a somewhat helpless expression on his face, and sighed as if in compromise: "Okay, since Team Leader Nie must let me speak, then I will Try to talk about it. But if there is something wrong, or if you make some low-level mistakes, I will trouble Team Leader Nie to help correct me."

"Just say it." Nie Qing looked at him, "We are just discussing and communicating with each other, there is no need to be pressured."

Mu Xi Ze then nodded, took his hand away from the mouse, turned around to face Nie Qing, and said, "Based on what I know so far, I personally feel that this murderer should be extremely cautious and meticulous, and has clever means. Professional people. Let’s talk about the scene when Dean Su and Bai Zhang had an accident... In a place like No. 1 civilian hospital with complete monitoring devices and a sound security system, the murderer can actually avoid the eyes and ears of everyone and the monitors. Quietly killing Dean Su and Bai Zhang is definitely not something ordinary people can easily do."

"Well, what you said is basically consistent with our speculation. Do you have any other opinions?" Nie Qing continued to ask.

Mu Xi Ze frowned and thought for a while, and then said in an uncertain tone: "I think, for such a cautious and professional murderer, it is impossible not to consider the surveillance video before committing the crime, so it is very likely that he has There has been a very thorough investigation and research - on how to avoid being caught on camera."

"It is very difficult to keep yourself in the blind spot of the camera." Nie Qing went on to say, "Although various criminal investigation novels, movies and film and television dramas often mention the criminal's method of using the blind spot of surveillance to commit crimes, But in fact, there is no detailed information about the monitoring angle and monitoring range of different types of monitors within the scope of information that ordinary people can access. The channels and places where the country sells monitoring equipment through formal channels have been strictly audited. Every transaction requires a complete record, including the real information of the person who asked for information. It is also required to be backed up. Once something goes wrong, it can be easily traced.”

"So, this murderer must have a reliable source for obtaining this kind of information." Mu Xi Ze subconsciously drew circles on the table with his slender fingers, looked at Nie Qing and said, "Also, even if you really know these data, if you Without on-the-spot investigation and accurate judgment, it is difficult to be foolproof."

Nie Qing nodded slowly, and pondered: "If the murderer can really do this, what is his own occupation? He has the opportunity to get in touch with such professional information, and his skills are not bad, and he even has some common sense of medicine and surgery... ...what is the most likely thing to do..."

"Yo ho, they're all here." Just as he was thinking, an angry voice came from the door, it was Fu Mingjie who came.

Mu Xi Ze stood up from his seat and greeted Fu Mingjie, "Hello, Team Fu."

The people in the three groups also shouted unevenly: "Hello, captain."

"Everyone has worked hard." Fu Mingjie nodded and walked towards them, walked up to Nie Qing and patted him on the shoulder, asking, "Is there any progress?"

"Yes." Nie Qing turned his gaze to the computer screen, "Just now, Mu Xize has identified the number of the anonymous call Qiu Ruimin received before his death, and we found that the same number had also called Dean Su before his accident. on the office phone."

"Really?" Fu Mingjie was a little surprised, "Why didn't the technical department find out?"

"The phone in Dean Su's office has been specially treated, and anti-tracking and anti-inquiry measures have been taken, so the colleagues in the technical department at that time could not find a breakthrough in it. In addition..." Nie Qing suddenly stopped in the middle of speaking. down.

Fu Mingjie immediately came to his senses, shook his head in frustration, and blamed himself: "Yes, I blamed me for giving up this clue so early. How is the situation now? After knowing this number, will it help us?"

"It should be a lot of help." Nie Qing replied, "After knowing this, we can determine the location of the murderer through the transmission point of the mobile phone signal. It can be said that as long as he turns on the phone, we can find him."

Fu Mingjie nodded appreciatively when he heard the words, "It's easy to grasp this point! We must catch him before he commits the next crime!"

"About this—" Nie Qing recalled the conversation with Yu Sheng just now, and said to Fu Mingjie: "Captain, we may have found information about one of the murderer's next targets."

"Oh? Who is it?" Fu Mingjie frowned and asked.

The other people in the three groups, as well as Mu Xize, who had just heard about this, all stared at Nie Qing in surprise.

"The current deputy chief physician of the Department of Cardiothoracic Surgery at No. 1 Civilian Hospital, Yang Zhengdong." Nie Qing looked at them and said seriously.

"Why do you suspect him?" Fu Mingjie asked again.

Nie Qing thought for a while, and replied: "The reason is a long story, and it's just our guess at the moment. But Captain, just in case, I would like to request to send some people to the No.1 civilian hospital to secretly protect Yang Zhengdong." , don’t let the murderer take advantage of us while we investigate.”

Fu Mingjie rubbed the center of his brows vigorously, and said solemnly: "Your thinking is very reasonable, we must do our best to avoid further deaths. Okay, then report the reason to me when you think it over later, and now send someone to clear this up. Yang Zhengdong protected him. You can borrow the manpower from the group, and I will go and tell Xiaochi."

Nie Qing: "Okay, thank you Captain."

"Then you go ahead, I have something to go to the hall today, call my cell phone if something new happens." Fu Mingjie went back to the office to pick up some things, waved at them and walked out of the criminal investigation hall.

"Leader Nie, shall we continue to analyze the murderer now?" Mu Xi Ze asked after Fu Mingjie walked out.

Nie Qing shook his head and took out his cell phone, "Wait a minute, I'll call Chi Xiaofei and borrow someone."