Shi Yan's always indifferent poker face also twisted out a Sichuan word between her eyebrows because of nervousness. She buried her head in all corners of the search, searching for possible human tissue. Chen Shijie's forehead was even densely covered with a layer of fine beads of sweat, and he didn't have time to wipe the sweat, so he was busy taking pictures at all angles to describe and record. On the contrary, their master, commonly known as the "old mage", was much calmer, wearing rubber gloves, just standing on tiptoe in the room with his hands behind his back for a while, and leaning down to look at it for a while, not like he was at the exploration site, but more like visiting a museum with a rich collection.

Qiao Zhen didn't get into work quickly, she stood in place in a daze, but her brain was running rapidly: if Zhang Qin had been killed, why hadn't the body been found for a long time?

At this moment, it is difficult not to suspect that Zhang Qin was not only killed, but also possibly crushed. If it is to hide people's eyes, then the home is undoubtedly the safest place to break up the corpse. Qiao Zhen circled around the small room with his eyes, and finally locked the focus of his attention on the bathroom with a bathtub that took up half of the area.

She narrowed her eyes, carefully and patiently searching each wall for marks that looked like blood. She took out the magnifying glass she had with her and moved the observation point inch by inch.

About ten minutes later, she quietly walked around to Seok Yeon's back and patted her on the back. Shi Yeon, who was fully engaged in work, almost screamed, and quickly covered her mouth without making a sound. They came to the bathroom quietly, and it turned out that after careful investigation, Qiao Zhen found two very tiny brown spots in the door frame and tile gaps in the bathroom, so small that they could almost be ignored.

Shi Yan hurriedly gave Qiao Zhen a thumbs up, and after extracting the sample, she was about to report the results of the two to the master. At this time, Lao Qiao listened to the voice in the headphones, and then waved his hand loudly while roaring: "Withdraw, withdraw, Hong Wei will enter the community in five minutes." ”

Everyone packed up their equipment in a hurry and rushed out in an orderly manner. Old Qiao left Qiao Zhen, who was about to follow out: "Come, you and I will see what the problem is." "Say it together, in fact, I understand that Qiao Zhen has had the ability to find fault since she was a child, and at this time, using her is the right person.

Qiao Zhen didn't have time to be surprised, and quickly relied on his memory to quickly put a few small objects such as floor mats and vases back into place, and finally glanced at them quickly and carefully, and signaled Old Qiao with OK gestures, and the two retreated quietly, as if they had never appeared.

Later, Qiao Zhen learned that Hong Wei was going to pick up his unwell daughter and go home early. Probably because of the blow of losing her mother, the girl had insomnia for many days, and she completely lost the moist face of the flower girl, her face was haggard, and her body was thin. Seeing Hong Wei holding his daughter in the monitoring probe, Qiao Zhen deeply understood this father's love for his daughter through his body language.

For a moment, Qiao Zhen even sincerely thought in his heart that he hoped that the DNA of the blood sample would not match Zhang Qin's. At least in this way, the girl will not have to suffer a second blow, and the world will not have a conscientious father who loves his children. At that moment, she was so envious of this girl, at least she had a mother who loved her, and a father who could express love and love.

The blood sample quickly came out, but it was unexpected by everyone.

Of the four blood samples, not only three of them matched 99% of Zhang Qin's daughter's DNA, but also one was actually a mixture of blood of mother and daughter.

The air in the entire conference room froze. In every case, there are forks in the road waiting for important decisions, and everyone is used to it, but Qiao Zhen understands the problem in front of the task force at the moment: there is circumstantial evidence, and according to the existing evidence, the suspect can be criminally detained, so that the interrogation can be carried out.

This is a risky move, if you break through the opponent's psychological defense line and grasp favorable evidence for suspicious points, it will naturally be a great opportunity to open a gap. However, in the absence of evidence of direct killing, the interrogation is prone to an impasse, and the difficulty of finding a breakthrough in the future doubles.

Qiao Zhen couldn't judge his father Qiao Raogang's attitude at the moment. His expression has always seemed to be fixed at a certain latitude, neither happy nor sad, not angry but mighty, and there is no micro-expression, even if it is a professional psychoanalyst, it is difficult to extract information from him who prefers words like gold when talking about cases.

The captain of the district bureau was obviously conservative, he suspected that the blood sample was regular in shape and small in scale, and it was likely that it was accidental bleeding during life, and there was too little evidence at hand. Even if there is too much suspicion, it is not enough to be used for interrogation.

"In the past, we have encountered the person involved in the case who usually bleeds because of rhinoplasty, and the traces collected are exactly her daily bleeding." Da Liu echoed beside him.

Qiao Zhen looked at his father's face, but he still didn't move, as if he was completely immersed in his own world.

The team leader finally proposed: "It is better to keep an eye on people from the outside, and at the same time let him know through various channels that the current investigation work has reached an impasse." If he is not the murderer, we cannot rule out that Zhang Qin was killed outside his residence. If he is really a murderer, it is just right for him to let down his guard, so as to observe his mentality and trajectory, to see if he will show flaws, so that we can grasp more and better evidence. ”

Lao Qiao extinguished his cigarette and finally spoke, straight to the point: "I understand that the current media coverage of this case has also made everyone's work pressure. My opinion is quite different from that of the captain, and I insist that being killed at home and having a long-term relationship with each other has a motive to kill. ”

Many of the investigators who were burying their heads just now put down their mobile phones one after another, and their eyes were waiting intently for Qiao Raogang's next step. Lao Qiao turned his head around: "Last time, because of the work arrangement, one of the members of our serious crime team was absent, and today, he specially handed over the work to me and asked our captain Zhang to come and tell us a few words." ”

Zhang Chenzhi sat in the back row, and as soon as he stood up at this time, his tall and capable appearance attracted everyone's attention: "Team Qiao is polite, everyone just call me Xiao Zhang." I agree with Team Qiao's view that although our investigators have obtained very little useful evidence, when necessary, we still have to firmly believe in the evidence and strengthen our confidence in the direction of the case. Now is the time to do so. ”

He paused, looked around, saw that everyone put down their phones, focused on themselves, and continued: "Hong Wei, there are so many doubts at the same time, according to the experience of everyone here, this will not be a coincidence. The evidence-first investigation concept is indeed a sufficient condition for us to consolidate the preliminary investigation work and accurately identify the suspects, but it is not an inevitable condition. The more we are at such a crossroads, the more we need to be not impatient and anxious, handle cases in a down-to-earth manner, and trust our initial judgment. ”

Everyone was a little confused, and Qiao Zhen leaned back to Shi Yan in confusion and asked where their focus was. Shi Yan cast a contemptuous look at him lightly: "It's nothing more than discussing whether Zhang Chengcheng's level is a major department or a deputy department, how can he climb so fast at such a young age." You see, there must be people who speculate that there is someone above him, or that he eats by his appearance! I can guess what these people think. ”

"And does he have it?" Qiao Zhen smiled and asked deliberately.