Chapter 14 System Warning!
How do you describe the smell of a corpse?
The smell is similar to stinky salted fish + rotten eggs + rotten meat, a combined smell of being thrown into a dry toilet and fermenting for two days. Once you smell it, you will never forget it.
Xu Dayuan and the people from Tieshan Police Station all looked at Zhou Ning. Even though he felt extremely disgusted at the moment, Zhou Ning couldn't be scared. After all, Xu Dayuan had just scolded Cheng Li's mother so vigorously, and he couldn't embarrass Xu Dayuan no matter what.
Zhou Ning didn't say anything, just nodded to Xu Dayuan, then put down the big bag behind him, squatted on the ground and took out the things inside. Zhao Xinli put down the survey box and rubbed his nose.
"What's that smell?"
“The stench of corpse.”
Zhao Xinli was stunned and swallowed back the second half of the sentence that he was about to say.
"Well, I'll wait for you here."
Zhou Ning couldn't say anything else. With his colleagues watching him, he couldn't complain now. After all, he was the forensic doctor.
Find the isolation suit and gas mask and arm yourself.
I walked quickly to the door of the room. It was a wooden door tightly closed. I pushed it slightly and a lock with a key in it shook, making a crisp sound.
The room was locked from the inside, and he turned around and looked at Zhao Xinli.
"Help me take fingerprints on the door, and then pry the glass open without damaging the lock. Is that okay?"
Zhao Xinli nodded, put on gloves, picked up a brush and black powder for collecting fingerprints, evenly applied the black powder on the door, then scanned it and found seven incomplete fingerprints.
After taking fingerprints and throwing the things into the evidence bag in the investigation box, he carefully peeled off the putty on the edge of the glass, cleaned up the nails, taped it up and pulled it, and the glass fell down.
He reached in through the gap in the glass, turned the key to the bronze three-ring lock, threw it into the evidence bag, and gave a gentle push, and the door opened.
At this time, Zhou Ning had already dressed himself, wearing three layers of gloves, goggles, a gas mask, and an isolation suit. After he was fully armed, he picked up the survey box and walked to the main house.
Sealed room, this is Conan's favorite.
Zhou Ning took a deep breath and shook off his messy thoughts.
A male corpse with white lower body appeared in Zhou Ning's sight. There was a knife stuck in his back. There were pools of blood, blood drops, and traces of blood on the ground. Flies were flying around his body, and some milky white maggots [1] were crawling on his body.
Zhou Ning's hair stood up all over his body, and the nausea made him feel even more short of breath.
However, you can't be timid at this time.
As he stepped inside, Xu Dayuan and the others had already approached the door. Many eyes were fixed on Zhou Ning's movements. The old policeman who was chatting with Xu Dayuan raised his chin at him.
"You were able to prepare all these things before coming here. You must be a professional. When did you find this treasure?"
Xu Dayuan looked indifferent, put on a mask and folded his arms.
"Professional, right? Xiao Zhou is a professional forensic doctor. It was his credit that we were able to catch the suspect in the 9.27 case within 24 hours."
The old policeman had a look of surprise on his face, and the two continued chatting in low voices.
Such praise did not bring Zhou Ning any excitement, but instead added a bit of pressure.
After finding a clean place and putting down the survey box, Zhou Ning began to take pictures of various parts of the body and measure the height and size of various parts of the deceased.
The deceased's left arm was stretched out towards the door, his right hand was curled up beside his head, he was wearing a white short-sleeved T-shirt on his upper body and nothing on his lower body. Two sneakers were scattered not far from the body, and the heels of the shoes were crushed. Near the bedroom door, clothes were scattered on the ground, and there was another pool of blood next to it.
The deceased's face was tilted to the right, his mouth was open, his tongue was sticking out, his eyeballs were bulging, his entire face and facial features were swollen, there was a cut on his neck where maggots gathered, and part of his skin had been eaten by the maggots.
Zhou Ning ignored the maggots and flies. The state of the deceased appeared on the transparent screen in front of him as if it had been scanned.
At the same time, a familiar sound appeared in Zhou Ning's ears.
Ding, the system has released a task. Please bind the person to choose the difficulty of the task: A. Primary task; B. Intermediate task; C. Advanced task.
Zhou Ning was stunned. Is this how it is played now?
There are three difficulty levels, and the highest one is obviously the most difficult to complete. Of course, the rewards are also increased accordingly, but he still knows his own limitations.
It is not easy to find evidence for a highly decomposed corpse, but when Zhou Ning thought of the corresponding reward, he felt itchy. How about taking a middle-level task?
While I was still thinking, I heard a dripping sound in my ears and the content on the screen had changed.
The bound person has selected the intermediate task and is now releasing the task.
Intermediate task content:
1. Conduct a preliminary analysis based on the evidence at the scene and give the cause of death of the two deceased within 60 minutes.
2. Find the murderer and all the evidence within 72 hours.
mission rewards:
If one of the intermediate tasks is completed alone but the other is not completed, there will be no reward or penalty, and the submission will be invalid if it is overtime. If both tasks are completed within the specified time, the corresponding reward will be drawn based on the completion quality and the remaining time.
Zhou Ning was completely confused. Ten thousand crows flew over his head. Is this a mid-level mission?
Thank you, this is not just me doing the work of a police force alone, you can just kill me.
System warning!
If the bound person abandons the task, all rewards previously obtained from the system will be withdrawn. Please confirm whether to abandon the intermediate task?
Zhou Ning got scared.
Wrong teeth, take two deep breaths, accept the mission!
Ding, the countdown begins!
With a sound, two countdown signs appeared above the big screen, one was 00:59 and the other was 71:59.
this……
How come this is still overlapping timing? Is an entire hour calculated like this?
With a sigh, Zhou Ning stood up and waved to Zhao Xinli outside the door. This wouldn't work and he needed to find some help. It would take more than an hour to complete the inspection by himself.
Zhao Xinli covered his face with a mask, put on shoe covers, and carefully avoided the bloodstains on the ground as he moved closer, looking at Zhou Ning in a muffled voice.
"What's the matter, Xiao Zhou, the forensic doctor?"
Zhou Ning didn't waste any words, stuffed the camera into his arms, and threw him a mask.
"Wear two layers of masks to block out some of the stench, and then follow my movements. I'll put down the signs and ask you to take pictures. I can't finish it by noon. We still have to investigate the scene as soon as possible and then take the bodies away."
Zhao Xinli wanted to refuse, but Xu Dayuan behind him coughed. Zhao Xinli shivered and obediently took the camera and mask like a quail and armed himself.
"Come on, I'll follow your lead."
At this time, Xu Dayuan took the old policeman away, and Zhou Ning only heard part of what Xu Dayuan said.
"Let's go. Let's investigate outside. Call the village committee and ask the somewhat idiotic neighbor. It would be best to check if anyone in the surrounding area has installed surveillance cameras at home. Let's check those who have cars..."
Zhou Ning held a stack of numbered signs and placed the pools of blood, blood drops, wiped bloodstains [2], and bloody footprints on the ground in order, and of course the clothes and shoes of the male deceased were also placed.
Then he waved his hand and Zhao Xinli went over to take a photo.
Zhou Ning bent down and searched the pockets of his clothes and shoes. There was only a shopping receipt from Li Qun inside, which he put into evidence bags.
He picked up a few more pupae with tweezers. The pupae were big and small, light brown in color, and their shells were not very hard. Zhou Ning looked up and found that the flies flying over the corpses included common houseflies and green bean flies, whose scientific name is Lucilia sericata.
Looking at the squirming maggots, Zhou Ning suppressed his nausea and picked up a relatively fat and strong one. He measured it with a ruler and found that the length was 13 mm. He found a few smaller ones and measured them. The lengths were 10 mm, 11 mm, and 12 mm respectively.
His mind quickly recalled the part about insects and time of death during the on-site investigation.
Maggots appear 10-20 hours after death, and fly worms grow at a rate of 2-3 mm per day. As for the appearance of fly pupae, they usually appear in 5-7 days.
Zhou Ning squatted and took two steps. The face of the male deceased was severely deformed. He stretched out his hand and wanted to push the deceased's head so that he could see the complete appearance of the face. However, as soon as he touched the forehead, he felt it was so soft that it seemed to melt immediately, so he gave up the action.
However, with this movement, all the flies on the deceased's neck flew away. There was a mole the size of a fingertip behind the deceased's ear, where the hair met the jaw, with a few hairs on it.
Zhou Ning was delighted and looked up to search for Zhao Xinli.
"Come over here and take pictures!"
…
PS:
[1] Flies and maggots: In forensic entomology, the various forms of flies can be used to infer the time of death, so maggots at the scene are also very important. (Although they are disgusting)
The eggs develop into larvae after one day, and then develop into first-instar worms after another day, which frantically feed on the corpse. One day later, they turn into second-instar worms, and then feed frantically for another day to become third-instar worms. They pupate after four to six days, and the adults break out of the shell five days after pupation.
According to the test, when the indoor temperature is 22 degrees Celsius, it takes 19 days for the eggs to develop into adults. If the temperature is above 25 degrees Celsius, it takes 12 days. Death time = fly egg laying time + fly egg hatching time + maggot growth time.
The length of the maggots when they hatch is about 0.175 cm. When the temperature is the same and there is enough food, when the temperature is above 25 degrees Celsius, the coefficient of change between the growth time of the maggots and the length of the maggots is about 85 hours per centimeter.
[2] Wipe-like bloodstains: refers to bloodstains formed when a blood-stained object directly contacts a carrier through smearing, rubbing, touching, or rubbing and remains on the carrier.
For example, when blood-stained hair is wiped, it mostly forms strip-shaped bloodstains, and when blood-stained fingers are wiped, it mostly forms flake-shaped (when rubbing), block-shaped (when touching), dot-shaped (when grabbing and pinching), and long strip-shaped (when dragging) bloodstains.
The bloodstains formed by writing or drawing with hands or other objects stained with blood still fall into the category of wipe-like bloodstains, so we regard them as a special kind of wipe-like bloodstains.
