"Because the cremation case is different from other homicides, the command asked us to investigate with the technical squadron of the substation, and when we arrived, we found that the victim was lying on his back when he died, with a pair of leggings and a skirt of polyester fabric, the skirt was flipped up to cover his face, and it adhered to the skin due to the fire, and there was adhesion to the skin tissue, resulting in the body being viscous, cracked and unrecognizable, and no mechanical damage was found on the body. ”

As soon as Cheng Wenming and Wang Jiefang accompanied Han Bo to sit down in the conference room, Zhou Suying and Li Jiaqi brought the case materials.

I probably introduced the situation at the dinner table, and now I want to introduce the specific situation.

Li Jiaqi was the first to speak, considering that Wang Jiefang was the only person here who was not very proficient in technology, she clicked the mouse again, looked at the miserable photos on the projection screen and explained: That is to say, there were no blunt or sharp injuries, no firearm injuries, and the initial suspicion was that the death was caused by mechanical asphyxiation.

However, during the on-site examination of the autopsy, it was found that there were a small number of bleeding spots in the near fornix of the conjunctiva of the deceased's eyelids and the inner and outer canthus of the bulbar conjunctiva, which were round in shape, the size of a needle tip, clustered and fused, and dark red, which is a typical cadaver symptom of mechanical asphyxia. In addition, we have extracted extremely important evidence from the genitals of the corpse - ***. ”

As long as the direction of the investigation is correct, the scope of the suspect is successfully delineated, and the murderer can be compared by sampling and comparing them one by one.

Han Bo felt that there was still a lot of hope for this murder case to be solved, and while taking notes as if he was holding a case analysis meeting in his own unit, he motioned to his younger sister and old subordinate to continue.

"*** I have extracted it, but very little. Although it is small, it is enough to extract the life information contained in it. This finding confirms that the killer may have raped the girl and was afraid that the matter would be exposed, so he killed and burned her body. ”

Li Jiaqi paused, and then said: "After the body is transported back, the autopsy will be carried out immediately, and all organs of the deceased's body are normal and undamaged, ruling out the possibility of pathological death." In the thoracic cavity, myocardial cells are found to be cloudy and swollen, and vacuoles are formed in the nucleus and cytoplasm. Upon incision of the neck, extensive subcutaneous hemorrhage, bleeding from the sternocleidomastoid and sternohyoid muscles of the neck, and fragmentation of thyroid and cricoid cartilage fractures were found. ”

Han Bo is not a forensic doctor, but that doesn't mean he doesn't understand it at all.

When he was studying in Beijing, he went to observe autopsies, and later studied no less than 300 autopsy reports, when he suddenly looked up and asked, "Strangulation or strangulation?"

"The strangulation showed longitudinal fractures of the thyroid cartilage and cricoid cartilage, but the girl's body showed a fracture of the upper horn of the thyroid cartilage and a fracture of the greater horn of the hyoid bone, which is sufficient to prove that the girl died of strangulation. ”

Li Jiaqi clicked the mouse again and brought up a video of the dissection.

A woman with a scalpel and two assistants dissecting a charred corpse under a shadowless lamp looked terrifying.

Wang Jiefang didn't dare to stare at it, but she said casually: "According to the degree of digestion and emptying of food in the stomach, as well as the simple integration of the amount of urine in the bladder, plus the inference of tissue enzyme activity after death, the preliminary estimate of the time of death was between half past four and half past five on March 28. Several forensic experts who came with Mr. Wang of the Criminal Investigation Corps of the Provincial Department to guide the investigation also thought so, regardless of the cause of death or the time of death. ”

Recalling the scene of handling the case under the leadership of Han Bo, Huang Zhiyuan was so excited that he couldn't help but stand up: "Report to the Han Bureau, our investigation and inspection are relatively focused on the fire method, after investigation, experiment and analysis, we believe that the fire method should be gasoline poured on the deceased, and the murderer used a lighter to ignite the body." Unfortunately, no lighters were found at the scene. ”

Han Bo stared at the live photos on the screen and asked in a low voice, "Where are the footprints?"

"The location where the body was found was relatively remote, and the scene was well protected, but because the ground was relatively hard and it did not rain before and after the crime, no footprints or other traces were found. ”

The site is not better protected, but impeccable.

Judging from the photos, they have protected the scene very well, centering on the place where the body had been lying on its back, spreading out a circle with a radius of five meters around it, covering it with a plastic shed to prevent damage to the scene from the external environment. During the inquest of the scene, even the leaves around the corpse were collected, especially the charred, dry and intact underneath the body.

There is no need to ask if there is monitoring, if there is, the murderer would have been arrested and brought to justice.

Han Bo picked up the case file and flipped through it, and asked in a low voice, "How did you analyze it?"

The technical reports of the case have all been released, and the next thing should be the investigation, to be precise, the criminal police of the special case team.

The criminal police's research on criminal cases mainly tends to use criminal psychological portraits to portray the behavior patterns of suspects.

This kind of "psychological portrait" is not as divine as it is, nor is it as fast and accurate as in the movie, it requires a large amount of clear information, that is, trace physical evidence, and then excavates shallow criminal information.

Wang Jiefang's introduction made Han Bo a little disappointed, the task force completed the study of the nature of the crime at that time, that is, rape and murder, such research results only portrayed that the murderer was a man, and the subsequent forensic identification report pointed out that the ** taken out of the deceased's genitals was confirmed to belong to a male with blood type O, and there should be a pedophilia, this is the image of the murderer who is preliminarily judged.

It must be admitted that Cheng Wenming is indeed better than him in this regard.

Cheng Wenming snuffed out the cigarette butt and said slowly: "The deceased's face is covered by clothes, if the murderer wants to achieve the purpose of rape, he does not necessarily have to do this, and in the panic, he may not be able to take into account where the clothes should be turned over." I checked the relevant information of previous cases and found that there was a series of rape and murder cases in Northeast China many years ago, when all the deceased's clothes were turned over their heads and their faces were covered, and the experts who solved the case analyzed that the murderer and the deceased knew each other, so I think the murderer in this case may also know the deceased. ”

"It's entirely possible, did you check in this direction?"

"Checked, but not deeply. ”

"Why?" asked Han Bo, puzzled.

Cheng Wenming really didn't know how to answer, Li Jiaqi was not a leader who didn't have so many scruples, and muttered: "Yue Zhi personally serves as the leader of the task force, he thinks that Cheng Zhi's inference is not universal, and he can't easily draw conclusions, and Cheng Zhi's analysis has not been recognized by the task force." ”

Could it be that a layman commands an insider?

If he is not in his position and does not seek his own politics, Han Bo is not good at commenting, so he thinks about it and asks, "That's all?"

"Of course not. ”

Cheng Wenming lit a cigarette again and continued: "After I intervened in the investigation of the case, the first thing I noticed was that the place where the deceased's body was found was a small remote park far away from the city or even the center of Nanzhou District. It takes 35 minutes to drive from the place where the victim said goodbye to his classmates to the scene, and if he is unlucky, it takes at least 50 minutes all the way to the red lights, and about an hour by bus. ”

Han Bo thought deeply and muttered: "If the murderer went to great lengths to rape an underage girl and bring her to Nanzhou District, then his way of thinking is indeed noteworthy. ”

"So I think it's weird. ”

Cheng Wenming looked back at the projection screen and muttered: "The murdered girl has a good family background, she will not easily go with strangers, and those common tricks of using candy to deceive children do not work, which means that the murderer needs other methods to commit the crime." And his ultimate goal is to violate this child, so he can achieve his goal by committing a crime in any hidden place in the city, why do you have to take the trouble to take the child so far?"

Han Bo nodded, put down the case file and analyzed: "Does this prove that the murderer knew the deceased, and he hopes to escape from this city that he and the girl are familiar with, and escape from the control of the girl's family?"

When he thought of the detachment leader who did not focus on the main thing and burned the three fires of "saving water", "saving electricity" and "saving food" as soon as he took office, Li Jiaqi was full of opinions, and couldn't help muttering: "This is also speculation, Yue Zhi thinks that it is not easy to draw conclusions, and these questions of Cheng Zhi have not been taken seriously by the task force." ”