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The time was close to one o'clock in the afternoon, Zhang Luo in the team bought a boxed lunch takeaway, it was inconvenient to eat on the spot, was there any other place to eat directly, so he simply asked the takeaway brother to send it directly to the police car. The food was almost cold, and it didn't taste much to eat, especially the green vegetables, which looked yellow and shriveled, and it was very appetite-reducing. Fortunately, everyone's mind was not on eating, and the hungry food was stuffed into the mouth one by one.

Everyone couldn't wait to return to the bureau, and returned to the police car to pick up fast food while starting to discuss the case. Zhang Chenzhi had been listening to the discussion silently, he ate quickly, he ate first, and he proposed with a wipe of his mouth: "In view of the special professional identity of the deceased Zhang Qin, it is necessary for us to establish the people she has interacted with in the workplace." ”

"You mean a colleague who might have a conflict of interest with her?" Qiao Zhen asked with a frown, and the vegetables in her bowl were placed in a corner, stacked with the bones of the chicken legs.

Zhang Chenzhi proposed: "The victim Zhang Qin is a retired and rehired person, which is generally the case, because there will be no more job promotion, and there will not be too many entanglements in the interests of the workplace." On the economic side, pharmaceutical suppliers are here to see if there is a situation. ”

Qiao Rao just took a sip of strong tea and said with a calm face: "In addition, the relationship between Zhang Qin and her son is not good. According to the neighbor's reaction, after the old man died, Zhang Qin's temperament changed greatly, and the TV was often turned on at a loud volume overnight, not only the neighbors, but also her daughter-in-law once proposed to move out and live alone. ”

However, the house was the property of the deceased and did not have the names of his son or daughter-in-law on it. The area has been rumored to be demolished, and Zhang Qin had a heated dispute with her son a month ago over a hukou issue. Zhang Chenzhi added.

Shi Yan, who rarely spoke, said coldly in the interval of everyone's short silence: "I think there is still a question, is Zhang Qin's son's statement true?" ”

Zhang Chenzhi immediately asked: "Where is the basis? ”

"There is only this space in the house, the layout of the building is complicated, the average person will get lost when they come in, the door has not been pried, and there is no sign of turning in the house. Moreover, it was just when his son came out of the room that Zhang Qin sat up and called his name before he fell down and died, all the coincidences together, will it still be a coincidence? ”

Qiao Zhen bent over, sat down on the vacant seat next to Shi Yan, and then asked, "Do you think Zhang Qin's son called him before she was killed, or was it a hallucination of his own?" ”

"What he thinks, I can't judge exactly." Shi Yan calmly analyzed, "But there is one thing, I doubt it, after a person has been slashed twice, he can still sit up and speak." ”

"I think Zhang Qin was only wiped once." Qiao Zhen raised a different opinion.

"Then how do you explain that the bones in her neck are broken and her skin is still connected? It is only possible that such a wound can be formed by a knife from the left side of the neck and then a knife on the side of the neck that is immediately connected. If a knife can solve the problem, why are the bones in the neck broken, but the skin not broken? ”

Qiao Zhen gestured and explained: "The bones are rigid, while the skin is elastic and has a lot of room for contraction. If the skin on the neck slides to the right side when the knife is cut, and when it is completely cut, the previous piece of skin slides back to its original place, and it is possible to reach the same level of trauma......"

Qiao Rao just turned his head and stopped Qiao Zhen from continuing with his eyes, but Shi Yan listened attentively, as if thinking about the possibility she described, and didn't notice Lao Qiao's actions at all: "Hey, so you think Zhang Qin was only slashed once, keep talking, don't lose your appetite." ”

Qiao Zhen glanced at her father suspiciously, and then continued: "Although there are all kinds of signs that Zhang Qin and her son and daughter-in-law who live together are more tense, her son should not be lying on this point. The reason is that after she was slashed, although it was fatal and her trachea was cut, from a medical point of view, she would not die immediately, and there would be a short process before she stopped breathing. ”

Qiao Rao just asked Shi Yan inquiringly: "There is a specialization in the art industry, forensic medicine is not your specialty after all, Shi Forensic Medicine, is it really like this?" ”

Shi Yan nodded without hesitation: "My initial judgment was also a bit preconceived. I thought about Qiao Zhen's statement carefully just now, and it does work in theory. And after the trachea is cut, a puff of gas is ejected from the lungs, and it is entirely possible to form a gas sound, that is to say, the cry that Zhang Qin's son heard was not an illusion, and it was also true that she screamed before she fell down. ”

"Okay, then we might as well not narrow down the scope of work for now, or concentrate on the social relations of acquaintances, but not only her family. The key target is the medical representative who has had close contact with her and has had fierce conflicts in the later period. ”

In the blink of an eye, the autumn is cool, the pleasant wind that blew on the body the week before, with a slight chill at the moment, there are many elderly policemen in the compound, the work rhythm is fast, there are old and young, they know that there is no "qualification" to be sick, and they are all before the notice of the unified change of uniform, they put on the police vest to prevent colds, and are not disturbed by wet and cold weather.

"Team Zhang's thinking is completely correct." Qiao Zhen was still dressed in short-sleeved clothes, and walked quickly into the conference room, with a slight bead of sweat on the tip of his nose. She didn't notice that Zhang Chenzhi was sitting in the corner on the phone, and rushed into the conference room with the autopsy report.

"Oh, how so?" Zhang Chenzhi hung up the phone, got up and asked with interest, "Forensic Doctor Shi has made progress here?" ”

"That's right. In addition to the marks of a knife cutting the trachea, there are also small scratches on the neck. ”

"Hesitant to start, if you are not a novice, it is very likely that you are an acquaintance who knows Zhang Qin."

Qiao Zhen nodded: "Although I was hesitant at the first time, but once I started, I behaved more extremely, do you remember that Zhang Qin was cut off her trachea, the murderer spent a lot of effort, not only cut her strong artery, but even so hard that the knife was poked and bent and bounced out, the murderer was bent on extinguishing his mouth." And from a forensic point of view, the deceased Zhang Qin's heart was full, indicating that he was very frightened before he died, and he also experienced severe pain. ”

Zhang Chenzhi took the report and skimmed it roughly: "But there are no resistance injuries on her body?" ”

"Yes, it means that she had direct contact with him before she was killed, and the time was very short, and she was cut before she even had time to prevent it."

"If I'm not mistaken, the murder weapon was of poor quality, just a most ordinary inferior fruit knife."

Everyone nodded. Qiao Zhen said: "In this way, it can be determined that the murderer is not a veteran, and generally no one chooses to use such a knife to make a strong cut." Unfortunately, none of the traces collected at the site so far have analyzed any useful information. ”

Zhang Chenzhi thought that Qiao Zhen missed the morning meeting because of the follow-up forensic analysis, so he comforted the situation: "I have organized everyone to conduct a key investigation of the owners and landlords who have lived in the building in the past three years, including those who are still living now, in addition, the files of the overnight burglary cases in this area are also checked, and the suspects are investigated and questioned one by one, and they are also asked to leave fingerprints in case they need it later." Wait for feedback on progress now. ”

Qiao Rao had just returned from the dust outside, and before anyone came in, the voice had already come in. I heard his loud baritro voice say, "Don't worry. The week of the incident, there was indeed a medical representative who visited Zhang Qin's home, and the most important thing was that on the second day of his visit, a single-edged knife exactly like the murder weapon at the scene appeared at the corner of the stairs. This person is very suspicious, wait until we ask first. ”

"Where is he? We'll go over now. Qiao Zhen jumped to his feet, his face full of eagerness. There were not a few people left in the conference room, and everyone was assigned to work, checking the case files, and visiting the periphery, and everyone was busy separately.

Qiao Rao just glanced at her, directly ignored her question, as if she didn't exist, just turned to Zhang Chenzhi and waved his hand: "Let's go, the person has been brought, let's go to the trial." ”

Qiao Zhen bit his lip and stood in place, watching his father and Team Zhang leave in a hurry.

When Zhang Chenzhi walked out of the conference room, he glanced back at her. Although she understood that there was comfort and encouragement in her eyes, she still couldn't hide the loss of being snubbed by her father in public.