"There are really too many doubts about this whole thing...... Di Minglei stopped pacing back and forth, looked through various materials, and suddenly looked up at Ai Jun, "Have you checked out the surveillance of those locations?"

"I found it, one outside the main entrance, two in the hall, and the remaining one at the third side door. ”

"Huh? That's not right. ”

Di Minglei thought for a while, and just wanted to say something, Chen Jing knocked on the door and walked in.

"Team Di, the victim's family has stabilized emotionally, and now they can cooperate in making a record. ”

"Well, I see, we'll be right over. Di Minglei and Ai Jun glanced at each other, and then walked out of the office with Chen Jing, although they didn't want to mention such a sad thing to the victim's family at this time, but it was their duty to find out the truth, and they had to do it.

In a neat small office, the victim's wife is sitting in a chair with a sad expression on her face, with tears on her face, holding her young son in her hands.

Di Minglei didn't rush into the door, but observed outside the door for a while, and asked Chen Jing next to him for a long time: "Is she the only family member?"

"No, but because the victim's parents now live in Y City, which is far away from here, there is no way to rush over in a short time, so I only called the victim's wife, Zhang Meng, to come over."

"Got it. Di Minglei sorted out his clothes, walked into the small inquiry room, and sat opposite Zhang Meng

"We regret what happened to your husband, but we ask for your cooperation in the investigation in order to find out the truth as soon as possible. Di Minglei spoke very slowly, trying to make every word reach Zhang Meng's ears clearly.

"Hmm...... Of course. Zhang Meng's voice sounded a little trembling, she raised her head, a pair of beautiful big eyes flashed with tears, "I can know...... How the hell did my husband die?"

"The preliminary forensic identification is that he died of a cervical vertebra fracture, but we need to investigate further how it was caused. Di Minglei said very vaguely, in fact, if there were not so many suspicious clues, this incident could completely rule out his killing, but as long as there are still doubts that have not been resolved, they will continue to investigate.

After listening to Di Minglei's words, Zhang Meng hid her face and cried again, crying and talking to herself, Di Minglei and Ai Jun pricked up their ears, wanting to hear if there was any important information from her intermittent words, but unfortunately they found nothing.

After a long time, Ai Jun handed Zhang Meng a pack of tissues, tried his best to soothe her emotions, and told her how important the information she provided would be from various aspects, and Zhang Meng took the tissue, wiped her tears, although her voice was still choked, but she still signaled to Di Minglei and Ai Jun that she was ready to cooperate with the investigation.

"So, I would like to ask what is the family relationship between you and your husband?"

"My relationship with my husband has always been good. Zhang Meng replied with a sob, "I used to work in the same office building as him, but we belonged to different companies, because we could always meet, and we knew each other after coming and going, and then we got married soon and had our own children, so I resigned to be a full-time wife." ”

"Your husband seems to be working overtime, huh?"

Zhang Meng nodded and closed his eyes slightly to prevent tears from flowing down again, "He is a perfectionist, he is very serious about his work, he will work until the early hours of the morning almost every day, even if he occasionally leaves work early, he will go home with work and continue to do it." ”

"And did he have anything unusual yesterday?"

"Abnormal ......" Zhang Meng thought about it carefully, bit his lower lip and said, "He sent me a message when he got off work yesterday, saying that he might come back late when he had to work at night, and told me not to wait for him, because this kind of thing often happens, so I went to bed early, and when I looked at my phone this morning, I found that he had sent me a message at nearly three o'clock in the morning, saying that the company had a power outage, so I was ready to go home." ”

"What!" Di Minglei suddenly shook, "The power went out?"

"Well, that's what he said in the message he sent me, and I still have this chat here. ”

Ai Jun stepped forward and found that the message was sent at 2:43, which was consistent with the time point they found that the surveillance clip on the 23rd floor was missing, so he immediately took a screenshot of the chat history as a evidence of the whole incident.

"Then as far as you know, did your husband have a grudge against anyone before his death?" Di Minglei thought about it, and still asked this question.

"Enemy?" Zhang Meng's eyes widened, slightly surprised and puzzled, "Do you suspect that he was killed by someone else?"

"Just answer our questions and we'll look into the situation. Di Minglei remained serious, and he didn't want to jump to any conclusions until the whole truth was ascertained.

"No, my husband has no enemies. Zhang Meng's head shook like a rattle, "He has always been very gentle with people, and I haven't heard him mention any holidays with others." ”

"We understand, thank you very much for your cooperation, and we will inform you as soon as there is any progress in our case. Di Minglei and Ai Jun exchanged glances, stood up at the same time, and sent Zhang Meng out of the small inquiry room, looking at her tearful face, the two of them were also a little sour in their hearts.

The investigation was urgent, and Zhang Meng was sent away, and the two immediately devoted themselves to the analysis of the incident.

"Team Di, you said it was strange to monitor this place?" Ai Jun found a floor plan of the building and circled several surveillance locations where the data had been lost.

"Think about it, if someone deliberately destroys the footage in order to eliminate the evidence of his appearance, then why are there two surveillance cameras distributed in the two exit locations?"

"Maybe one surveillance camera recorded him as he entered the building, and the other recorded him leaving?" Ai Jun immediately understood what Di Minglei wanted to say, and replied along his train of thought.

"Yes, but that's the problem, first, through which door did he enter the building, and ......from which door did he leave?

"So you suspect that the murderers could be two people?" Ai Jun suddenly became clear, but quickly raised a new question, "but if you said that after one person left, the other person was responsible for destroying the materials, then how did the other person leave the scene?"

"I suspect that it's very likely that another person didn't leave the building after destroying the data, and that he could disguise himself as an overtime employee and wait until the morning to blend in with the crowd and leave the building. Di Minglei pointed to several monitoring positions, his brain was running rapidly, and his eyes flashed with a strange brilliance, "Of course, this is just conjecture, and there is a possibility that another person is very good and has escaped all the monitoring equipment." ”

"However, the two surveillance cameras at the door are directly facing the gate, and if the other person wants to go out, he will inevitably be photographed......" Ai Jun wanted to refute, but as he spoke, he suddenly understood something, "I understand, I'll go to see the surveillance"

Twenty minutes later, Ai Jun excitedly returned to Di Minglei with a stack of materials.

"Team Di! I found out, the monitoring was really artificially changed the angle!" Ai Jun put the information neatly on the table, pulled the floor plan just now with one hand, and pointed to the monitoring at the location of the gate and said, "The monitoring here has shifted nearly thirty degrees to the right and right, and then there is a blind spot on the left side of the gate!"

Ai Jun felt his blood boiling, he enjoyed the process of connecting every piece of evidence in the case, and he felt a great sense of accomplishment every time he sorted out a clue.

But Di Minglei on the other side was obviously not so happy when he heard the news, and his expression was even a little more serious than before, the wrinkles on his face became very clear because of the tightly knit brows, he walked to the door of the office, looked out left and right, and after making sure that no one was passing by, he slammed the door firmly shut.

"Team Di?" Ai Jun clearly saw Di Minglei's mood change, and was very puzzled by his actions.

"Listen to Ai Jun. Di Minglei's voice sounded a little vicissitudes, his tone was low and hoarse, and he said word by word, "This incident may be beyond our control." ”

"What do you mean by that?" Ai Jun saw Di Minglei with such a look for the first time, and his heart began to become nervous.

Di Minglei didn't answer, he put a large company floor plan on the wall in turn, and began to write and draw on it with a pen, Ai Jun looked at it carefully and found that what he wrote was the timeline of this incident.

"According to the clues we have now obtained and our inference, murderer A lurked in the fire elevator on the 23rd floor, murderer B cut off the power on the 23rd floor at 2:41, and the victim Wu Ming sent a text message to his wife at 2:43, left the company at 2:44 and found that the elevator of the building was unusable, and walked into the fire staircase, and then the murderer A killed Wu Ming between the seventeenth and eighteenth floors and quickly left the scene, and the murderer B transferred from the power control room to the surveillance video room, destroyed the video data recorded with the figure of his companion, and also left the building at about 2:58。 ”

"Well, if we're right, the timeline should be like this. Ai Jun hugged his chest with one hand and supported his head with the other, but his tone was still puzzled, "But...... How is this beyond our control?"

"Here's the problem, although we can infer the process of the crime, on the other hand, who could have done such a thing?" Di Minglei propped his hands on the table and looked at Ai Jun with a firm look.

Ai Jun held his forehead and fell into contemplation, indeed, from the beginning he was obsessed with combing the whole incident, and has always neglected the important link of finding the suspect, but according to the current investigation results, the victim Wu Ming has a good relationship both at work and at home, and there is nothing particularly suspicious.

"Maybe someone has concealed the truth? In fact, some people have long seen Wu Ming unpleasantly, so they want to kill him?" Ai Jun said tentatively.

"No, I don't think so. Di Minglei shook his head and began to pace left and right in the room again, a pen between his fingers, "If it is really what we deduced, then don't you think the cooperation of murderers A and B is too tacit?

Ai Jun listened to Di Minglei's words and seemed to vaguely understand what he meant, but he couldn't believe it in his heart, and felt faintly uneasy.

"Furthermore, regardless of the so-called murderer A, just the murderer B, he is responsible for destroying the surveillance video data of his companions, but when he wants to leave, he must accurately avoid all the surveillance so as not to leave evidence. ”

Di Minglei flipped the floor plan back, pointed to a few locations, and demonstrated to Ai Jun,

"You see, from the monitoring room to the door, there are nearly ten monitoring equipment in total, B wants to get out of the building safely, you have to know the recording range of each monitoring skillfully, and know how much angle to move in the last monitoring place to create a monitoring dead end, which is not a level that ordinary people can achieve with one or two practices. ”

"So...... What do you mean...... Could it be ......?"

"That's right, I'm afraid this is buying murder, killing people. ”