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"What facts?" Cheng Ziqin asked. Pen & Fun & Pavilion www.biquge.info

"Although the neck fracture has been damaged by maggots, we can't tell if it is a sharp wound, but the traces in other places can help us figure out this problem."

Yang Tashan used a probe to cut open the densely wriggling fly maggots on the neck, revealing the remaining half of the neck, which was already full of holes eroded by the maggot protein lytic enzyme digestion solution, and he used the probe to insert several of the holes and said: "Pay attention, these holes, the size and depth are different from the maggots that are formed by the cannibalization of flies, which are formed by the teeth of wild dogs." And-"

The probe was inconvenient, Yang Tashan simply used his hand to separate the [***] soft tissue at the fracture of the neck and spine, exposed the cervical vertebrae, wiped the section of the spine clean with the back of a deerskin glove, and pointed to a few small scratches at the vertebral arch of a cervical vertebrae: "Pay attention, this scratch is curved, and it is absolutely impossible to be formed by a knife or something." ”

"That's right, it's the teeth of wild dogs and the like." The traces this time are obvious, and Cheng Ziqin is no longer at odds with Yang Tashan.

Yang Tashan cut the maggots at the wound on the thigh, and said: "Please pay attention to the head catcher, although the wound wall in these places has also been destroyed by the maggot, the general shape of the wound can still be distinguished, if it is cut with a knife, it is difficult to form this kind of wound, especially the wound on the thigh, which should be formed by the wild dog tearing off the flesh on the corpse." ”

"Do wild dogs or jackals have that much strength?"

"Don't underestimate the biting ability of wild dogs, especially when the corpse is already high [***], the muscle tissue is like blunt braised pork, wild dogs can easily tear off large muscles, and it is not difficult for a group of wild dogs to tear off the human cervical vertebrae."

Cheng Ziqin couldn't help but turn his stomach for a while, and he didn't know if it was the cause of the corpse smell, or if Yang Tashan said it was too disgusting.

Cheng Ziqin frowned and said, "Okay, even if you are right, it was a wild dog or a jackal who ripped off her head, then how did this person die, have you found out?" ”

Yang Tashan shook his head: "No, I carefully examined all the wounds on this headless corpse just now, and found no obvious fatal injuries, these wounds were all formed by wild dog bites, although the corpse was full of wounds, but no traces of his killing were found." ”

"So, is it suicide? No way! Cheng Ziqin said.

"I'm not saying suicide, I'm saying that there is not enough evidence to prove the cause of this woman's death."

Cheng Ziqin also agreed with this and asked, "So what now?" ”

"First, try to find the head of the deceased, which, if we judge correctly, was bitten off by a wild dog, should be near here; second, to determine the source of the body and find out who the deceased was; Third, find the first scene of death. Our detection will only be meaningful if it is established that this person actually died of murder. ”

Cheng Ziqin nodded, stood up and said loudly to the catchers standing not far away: "You will drag the net to search this piece to find the head of this headless female corpse, and then see if there are any dresses or other suspicious items." ”

Luo Yi and the others quickly agreed, lined up in a long row, and slowly carried out a dragnet search.

Cheng Ziqin asked again: "How can we find this first scene?" ”

Yang Tashan smiled bitterly: "I don't know this." Standing up, looking around, he continued: "Let's wait for them to search and see if they find it, maybe the first scene is near this Pingtougou, or maybe in Qingyang City or a nearby village, the body was moved here." ”

Then Yang Tashan walked to his forensic physical evidence investigation box, took out two small bottles from it, returned to the corpse, picked some flies and maggots from each wound, and put them in two small bottles.

Seeing this scene, Cheng Ziqin was disgusted and curious, frowned and asked, "What are you doing with these maggots?" ”

"Take it back and raise it."

"Ahh Cheng Ziqin exclaimed in surprise, looking at Yang Tashan in horror, she couldn't believe that Yang Tashan still had such a perverted hobby.

Yang Tashan smiled: "Don't underestimate these maggots, as long as you treat them well, they can tell you a lot of things you want to know." ”

Cheng Ziqin was a little hairy when he heard this, and asked, "...... them What can they tell? ”

"Like when did this deceased die!"

"This ...... How do you know this? ”

"As soon as a person dies, there will be a [***] smell, although the [***] smell at this time can not be sensitively captured by the human nose, but the flies already know, they will soon find the corpse and begin to lay eggs on the corpse, and then, beetles, parasitic wasps, mites, turtle insects and moths, etc., will also come to the corpse. There is a certain pattern in the appearance of these insects, and we can reverse the time of the death of the deceased according to the pattern of the appearance of these insects. ”

Cheng Ziqin heard him say so mysteriously, and hurriedly asked, "What are the rules for the appearance of these insects?" ”

"There are many kinds of flies alone, each of which has a different preference for corpses, some like fresh corpses, some like [***] corpses, to put it simply, under normal circumstances, two days after death, it will be flies and hemp flies that come to the corpse, and they will lay eggs on the eyes, nose, ears, throat, anus and wounds of the corpse."

"Why don't the other flies come?"

"Because other flies like [***] more serious or even [***] high corpses, they are not interested in fresh corpses, so they will not come."

Cheng Ziqin heard that there was still so much knowledge here, and he was even more curious, and asked: "After that corpse [***], what flies will come?" ”

"Two to seven days after death, when the corpse exposed to the air has begun to enter the severe [***] stage, at this time the eggs laid on the corpse, in addition to the fly and hemp fly, the butterfly and the sharp-tailed fly will also fly to lay eggs, and four to thirteen days after death, most of the soft tissue of the corpse has been eaten by the larvae of the fly, at this time the corpse has been highly [***], which attracts a large number of carrion and predator beetles, and later in this stage, the larvae of the fly and hemp fly leave the corpse and become pupa."

Cheng Ziqin's brows were about to wrinkle together, and listening to Yang Tashan's words, his stomach churned.

Yang Tashan smiled and continued: "By the tenth to the twenty-third day, the flesh of the corpse will be almost eaten, only the hair, skin and cartilage will remain, these are insects such as flies are not interested, so they will leave one after another, however, all kinds of beetles like it very much, and at this time they will come to the remnants of the corpse in large numbers." When they had eaten all their favorite things and left, there was nothing left to eat from the corpse, but there were still animals next to the corpse. ”

Cheng Ziqin tried hard to suppress his stomach and said, "The flesh of the corpse has been eaten, what other insects are coming?" ”

"Mites!" "They will appear in the soil beneath the corpse for up to three months. ”

Cheng Ziqin only saw maggots or pupae on the corpse before, and he didn't think about the law of the appearance of these things at all, let alone connect it with the time of death. ”

"Yes! I put these maggots back in order to cultivate them into worms, on the one hand, to see what kind of flies these maggots were, and on the other hand, to see when they grew up, so as to deduce the time of death of the deceased. Once the time of death is accurately determined, it can provide a basis for us to identify and eliminate criminal suspects in the future. ”

After all, Cheng Ziqin is a family of fast catchers, and her father is an old catcher, so of course she knows the importance of determining the death incident to solve the case. Asked: "What you just said is a time period, how do you know when it is?" ”

"Of course there is a way." Yang Tashan said, "For example, in this case, the corpse has been at a high altitude [***], and the speed of the corpse [***] is very affected by the temperature, according to the current hot weather conditions, it only takes two days to reach this step, so the preliminary judgment is that the time of death is more than two days." I just moved the joints of the corpse and found that the mortis had been completely relieved, so I judged that I had been dead for at least four days......"

"You wait!" Cheng Ziqin blinked his eyes, "What did you just say about the relief of corpse stiffness, what four days, what's going on?" ”

"Zombie is the stiffness of the corpse ......"

"I don't need to say this, I know!" Cheng Ziqin felt a kind of annoyance at being despised by others, after all, she was a family of fast catchers, and she still knew that this person would become stiff after death, "I'm asking you, you just said that you can infer that you have been dead for four days based on the complete relief of corpse stiffness, what is going on?" ”

"People stiffen after death, and there is a pattern to this stiffness." Yang Tashan explained patiently, "Generally speaking, there is a mortis about an hour after death, and it expands to the whole body in four hours, and it begins to remission in two days, and it is completely relieved in three to four days. Therefore, just now I moved the joints of the corpse and found that the mortis had been completely relieved, and only then did I come to the preliminary judgment that he had been dead for four days. ”

"You're saying that based on the combined judgment of the corpse [***] and the corpse, this person has been dead for at least four days?"

"Yes, but this is only the minimum time of death, not the exact time, and more evidence must be found to determine the exact time of death."

(To be continued)