Criminal Investigation: Forbidden Rose

In the photo on the big screen in the meeting room, on the cold dissecting table lay a skeleton of a child made of countless brown and yellow bone fragments.

"The deceased Liu Yutong, 7 years old, died ten years ago. He was wrapped in a black nylon luggage bag and buried under a tree near Lushui Lake in Xishan Mountain at a depth of 0.8m."

Yu Min's unwavering voice came from the meeting room, combined with the horrific picture, Xia Yi had goosebumps all over his body: "The corpse has been completely ossified, and the information that the forensic doctor can collect is relatively limited. Just from the bones Viewed from above, the overall structure is complete, but some bones have been displaced. There are no tissues and organs left on the bones, and even the cartilage has all disappeared. Among them, the right bone is relatively intact, and the left scapula and humerus are seriously damaged. Except for the left On the side of the humerus, all the long bones of the corpse were well preserved, excluding the naturally occurring medullary cavity and the wear of the articular surface. We believe that the left humerus of the deceased had a fracture during his lifetime, so after death, the cracks accelerated and destroyed the integrity of the bone. At the same time, a bone shadow was found on the left parietal bone of the skull, which belonged to the same side of the injury as the left scapula and humerus. It is reasonable to suspect that the deceased should have experienced an impact or fell from a high place before his death. The head and the left shoulder were the first One point of contact."

Xia Yi blurted out: "So, the child fell to his death on the mountain?"

"Not necessarily." Yu Min went through all the slides, and on to the next photo, there were a few teeth with pink roots in the beaker, "We took five upper teeth from the corpse and soaked them in absolute ethanol. Then the phenomenon of rose teeth was discovered. This is a typical characteristic of suffocation. It does not mean that the deceased died of suffocation, but experienced suffocation during the process of death. Pulp cavity, eventually into the tooth canal, resulting in the phenomenon."

"The hyoid bone area of ​​the corpse is intact, but due to the loss of cartilage, it is impossible to determine whether it was mechanically strangled before death, but I personally think," Yu Min tried to restore the situation at the time, "combined with the geographical location of the child when he disappeared, he should be He fell into a coma after falling from a high mountain, died of asphyxiation due to brain shock, or was directly buried alive."

Xia Yi held the information in his hand, glanced at the earliest skeleton, then at Yu Min, and let out a howl: "Fuck, this is too strong!!!"

Yu Min pushed his glasses silently, ignored him, but secretly glanced at Jiang Mo.The beautiful female police officer was looking at him with a burning smile, Yu Min quickly withdrew her gaze: "We have a second major discovery."

Xia Yi wailed again: "Ah, why are there more!!!"

Yu Min: "...?"

"No, no," Xia Yi quickly waved his hand, "What I mean is, here we are, we have been busy for a long time and have not made any progress, and after a while, it seems that we have not done anything. Compared with your efficiency, it is very embarrassing It's like putting the god of learning and the dregs of the school together for public execution. Hey, it's okay, tell me, Director Yu, please, tell me!"

Shao Lin: "..." Is there a rag, I really want to block this silly dog ​​who obviously has no yin and yang but sounds particularly yin and yang? ? ?

Jiang Moxiu frowned slightly, and cast a dissatisfied look at Xia Yi.If she hadn't sat next to Xia Yi, she would have slapped someone on the forehead.

Shao Lin took the initiative to do things for her: "Director Yu, please continue."

Xia Yi let out an aggrieved "Oh".

Yu Min's eyes fell on Shao Lin and nodded: "Actually, the second point is thanks to Consultant Shao. Through the analysis of the soil flora, we can now confirm that the corpse has indeed undergone a second displacement. Under the twin trees, Not a burial place for dead bodies as they decompose."

There was another uproar in the office.

A person's body grows a large number of bacteria, which is basically equal to the number of human cells, so after death, a person can also leave a unique microbial "fingerprint" in the soil.The corpse slowly rots in the soil, even if the flesh and blood disappears visibly, the remaining nutrients are still a feast for the microbial colony.A unique, tiny ecosystem emerges when the dead body radically alters the chemistry of the soil.It tells the unknown secret in the dark corner invisible to human eyes.

"We extracted the soil between the pelvis of the little boy's corpse, and the soil directly under the abdomen of the corpse, under the black bag. There were many holes in the bag, and the two soils were so close together that there should have been a lot of seepage, so, under normal circumstances, There shouldn’t be any difference between the two soils.” Yu Min explained, “But when I was digging, I felt that the color, texture, and smell of the soil were somewhat different, so I took samples separately. After a simple test, we found that the pelvis The soil pH was 6.9, slightly higher than the 5.5 below the body."

Some forensic science experiments found that the pH of the forest soil after the corpse was decomposed remained above 8 after 5 days, but before the corpse was put in, the pH of the soil was only [-].Of course, Liu Yutong has been buried for too long, and the changes brought about by the corpse to the soil are definitely not as obvious as those of a fresh corpse, but it is enough for the forensic doctor to discover the clues.

"In order to better quantify the texture of the soil, we extracted DNA from the soil, sequenced 16SrDNA, 18srDNA, and ITS amplicons to analyze the diversity of bacteria, archaea, and fungi," said Yu Min in the PPT Lost the comparison chart on the website, "We can find that the composition of the flora in the two soils is quite different. Among them, the soil between the pelvis of the corpse is more abundant in flora and has more active nitrite reductase activity. Clearly a sign of decay, which the soil directly beneath the body did not."

"So, we can basically be sure that when the corpse was buried under the twin tree, it was almost decomposed. And under this tree, it is indeed not the first place to dump the corpse. I don't think Shao Lin is lying."

Shao Lin breathed a sigh of relief imperceptibly.

Lu Wuxin was completely speechless this time, patted Shao Lin on the shoulder, and said in a rough voice, brother, I'm sorry, treat me another day, order whatever you want.

Shao Lin smiled lightly and said it was okay.

He quickly looked at Yu Min again, and asked, "Can we infer from the existing analysis data, when the corpse was transferred to the twin tree?"

"This won't work." Yu Min shook his head, "Without experimental calibration, I'm afraid it's hard to calculate. But in the nearby soil, except for the small part that Shao Yuan suspected of digging, there is no trace of looking at the newly digging. It's winter, it's reasonable. It is suspected that this body was buried under the twin tree half a month ago at the earliest, but the transfer time should not exceed three years. There are no traces on the surface, and there is still a separation inside the soil."

"While I cannot say for how long the body has been removed, we do have some clues as to where the body was first dumped."

Yu Min motioned to his students, and brought two evidence bags: "In the soil where the body was in the black bag, we found some broken gray bricks. Look at these, although they are different in size, they are of the same texture. "

"I asked the students to go back to the site and sample the common soil under the twin trees," Yu Min pointed to another cardboard box, "but only found natural stones of different sizes and textures. Obviously, these gray and The stones under the twin trees are different and should come from the original burial site."

Shao Lin carefully touched the gray bricks through the plastic evidence bag.Most of these bricks have been broken into small pieces, but there are relatively large pieces with smooth surfaces and obvious artificial traces, which are probably the remains of some construction waste.

At this time, there was a sound of footsteps in the corridor, and Yu Min's little assistant was holding two big bags of boxed lunch in his hand, howling excitedly: "Let's eat, let's eat, my god, Spinning around for 24 hours, I'm starving to death!"

The assistant enthusiastically took out the boxed lunches one by one and distributed them to everyone, and kept mumbling: "I asked the cafeteria to give us extra meals, one big chicken leg per person, tonight is New Year's Eve, brothers, Eat something good, no matter how shabby this meal is, it’s a New Year’s Eve dinner!”

Yu Min took the lead to open the lunch box, and directly took off the chopsticks: "I'm too busy, I only ate a few slices of biscuits at noon, I'm really starving to death. Let's talk while eating."

Yu Min's two students muttered over there: "Hey, it's better to turn bones, it has no maggots and no smell, God treats me well, next year will definitely be a good year!"

"That's to say wow! One year was also the Spring Festival, and a giant statue was fished out of the water in the middle of the night. Fuck it, I was having a New Year's Eve dinner, and it turned into slime rice when I ate it."

"Hahahaha-"

As we talked, the topic went to the way the giant watched the New Year's Eve dinner and never returned.

It's fine if others don't mention the New Year's Eve dinner.At this mention, Xia Yi thought of the family dinner that his family had at a five-star hotel in the city tonight.He glanced at the various corpse materials in his hand again, and felt a sudden pain in his heart.

Yan Jingjing mechanically opened the chopsticks, showing a look of lovelessness: "I should go to the seventh floor of the Internet to investigate and become a fairy. I shouldn't have dinner with the forensic doctor."

While eating, Jiang Mo spoke again: "Xiao Xia, tell me about your progress. How is Liu Yutong's family doing?"

Xia Yi turned his palms back, covered his mouth, and whispered to Shao Lin with a sad face: "I just said, the forensic team should not be the first to report, and everything you say now looks like trash."

Shao Lin nudged him with his elbow to signal him to stop talking nonsense.

"Hey, the child has no mother. It's a long story." Xia Yi's expression resembled that of a primary school student who hadn't endorsed it but was called out by the teacher for random checks. "Didn't we suspect that the kidnapper was Liu Yutong and his sister Liu Yumeng at the beginning? Call. Hey! The phone is turned off. Then we went to the door. Hey! There is no one at home. Then let’s contact the work unit. Hey! No one answered the phone during the holiday. Then I went to find Liu Yutong again Daddy. Hey-"

After the whole dinner table was brainwashed by that "hey", Jiang Mo became angry: "Don't just talk about the results!"

"Oh. Father Liu Yutong has already lived a happy new life. The so-called old one doesn't go and the new one doesn't come. The same is true for his son. He is holding the new son in his arms. It's okay to dig out the old one. Interest, talk about the bad luck of the Chinese New Year, I will talk about it after the next year. But my father told me that Liu Yumeng took leave on the 25th of the twelfth lunar month and went abroad with her new boyfriend. The two planned a ten-day trip to Europe , I won’t be back until the fifth day of the lunar new year.”

Xia Yi checked the entry and exit records and found that what Liu's father said was true.In other words, the person who took Shao Yuan away and threatened the police to find Liu Yutong's murderer could not be Liu Yumeng anyway.

Only then did Xia Yi shift the focus of the investigation to Mother Liu, who was said to have "suffered from mental illness and lost normal mobility".However, Liu's father said that Liu's mother was sent to No.11 Hospital of Yan'an City, which specializes in psychiatry, by her daughter a long time ago because of various abnormal behaviors that disturbed the lives of the neighbors. Never contacted his ex-wife.

When Xia Yi found the No.11 Hospital in Yan'an City, she learned that Liu's mother had been in and out several times in the past ten years, and that she had to be hospitalized forcibly when her symptoms were severe in the early years.But since he was discharged from the hospital last year, he has not been back.It is said that when I was discharged from the hospital, I was basically able to control my emotions, and I would not rush to call Tongtong when I saw a child.

Jiang Mo asked: "Then she didn't live with her daughter?"

Xia Yi nodded: "No. It is said that her daughter forced her to go to the hospital, but she felt that she was not crazy, so she was very angry, and the mother and daughter also collapsed. Now in the system, I can't find where she lives, nor I don't know what kind of work she's doing... I just know that until now, she still likes wandering around in the West Mountain."

"However, I asked at the hospital," Xia Yi added, "Mother Liu did indeed wear size 36 shoes, which match the size of the footprints at the scene."

"Then it is indeed likely to be Mother Liu." Jiang Mo nodded.

Shao Lin saw that Xia Yi had finished eating beef tenderloin with green peppers like a storm in the morning, so he put another piece of his own in the lunch box: "This is not a complete waste. Liu Yutong's mother, does she have a driver's license?"

"I'll check." Xia Yi logged into the driver's license inquiry system and soon found out, "No."

Shao Lin frowned: "Then I have to doubt whether they still have accomplices?"

He analyzed: No matter whether Shao Yuan was in a state of being "deceived" and left with the kidnappers in a clear mind, or where Shao Yuan was taken away by the kidnappers in a daze, if the other party was a woman wearing size 36 shoes, if she wanted to move A boy like Shao Yuan who is nearly 1.7 meters tall must need some tools.

Since the kidnapper made the first call, the focus of the search and rescue team has changed from "whether the child slipped and slipped somewhere on the mountain" to "whether there are any suspicious people captured by surveillance cameras at all the entrances and exits on the Xishan hiking route".However, with Twin Trees as the center, there are two hiking routes going south and north. The police determined that within an hour's walk, there are a total of thirteen up and down mountain paths, and parking is available at six foot of the mountain.Lu Wuxin led someone to retrieve the videos of the parking lot one by one, and touched them one by one...

When Shao Yuan went up the mountain, it was already four o'clock in the afternoon, and with the Spring Festival approaching, there were no tourists to climb the mountain at this point.During the period from Shao Yuan's disappearance to the time when the police station received the call from the kidnappers, criminal investigation and technical investigation together checked all the vehicles leaving the parking lot, but no suspicious vehicles or suspicious persons were found.

The Xishan area is a scenic spot that Yan'an City has focused on developing in recent years. The surveillance coverage is not the same as the time when Liu Yutong disappeared.

The more Shao Lin thought about it, the more strange he became.

Unless Shao Yuan chooses on his own to follow a strange aunt, walk a path without cement steps in winter, and then leave the mountain area to have an accident, then there is only one possibility left—that is, Shao Yuan did not leave the mountain area.

This is too strange, is he still in the Xishan Scenic Area?

In the Xishan area, the buildings that can hide people are only a few public toilets and a few pavilions of the forest management, but for the Chinese New Year, the forest management and cleaning are all on holiday, and those few houses have been searched long ago...

What went wrong?

At this moment, a civil servant rushed into the conference room.

"Jiang Fu, Jiang Fu! It's another network number," the little girl yelled, not daring to connect directly. "This prefix is ​​the same as yesterday's kidnapper's number, and the time interval is exactly a whole day. Could it be?" Another kidnapper!"

"If it's really a kidnapper," Shao Lin narrowed his eyes slightly, as if he was even more puzzled, "The other party doesn't intend to press for a ransom, why do you feel that they are more anxious than us?"

What is he in a hurry for?

The bell rang suddenly in the office, and all the police officers looked at each other in blank dismay.

Shao Lin gestured: "I'll pick it up."

Jiang Mo nodded silently.

"I will try to delay the time." Shao Lin put on the headset, "Even if the network account cannot be located by GPS, can you see if you can track the IP?"

Shao Lin pressed the call button unhurriedly after the network detective signaled that he was ready, and greeted him almost gently: "Hello."

The voice-changer voice full of electronic texture came from the opposite side again: "Have you found the murderer?"

In order to buy time for the Internet investigation, Shao Lin did not rush to answer. After deliberating for a moment, he said slowly: "Before answering your question, I want to make sure the life safety of the hostage. Can you let the child say a word to me?" ?"

The other party said viciously: "You have heard it last time."

"But we can't be sure if that short sentence was recorded in advance." Shao Lin paused, and sincerely suggested, "I don't know if it's possible, but let him tell me now that he wants to eat the most for this year's New Year's Eve dinner." dishes."

The other party was silent for a while, and the current sound was chaotic.

But soon, Shao Yuan's muffled voice came: "I want to eat black pepper steak the most."

"Okay." Shao Lin breathed a sigh of relief, and his tone was more gentle, "We will definitely find out the truth about Liu Yutong's case as soon as possible, and I hope you can keep your previous promise and don't hurt the child." Finally, he tried again He added without hesitation: "Can you promise me, Tongtong's mother?"

Shao Lin skillfully did not use Liu's mother's name, but used the identity of "Tongtong's mother", which most resonated with the other party.

The other party was silent for a moment, and did not reply directly, but repeated it stiffly: "Who is the murderer?"

Shao Lin had solved countless hostage kidnapping cases before, so he instinctively sensed the subtle unusualness of this kidnapper.The strange feeling in his heart deepened again.

Before he could respond, the other party hung up the phone: "Trash police, you still have 48 hours."

"Caught it!" Yan Jingjing slapped the table and shouted, "I caught the network IP! This is the IP of Yan'an City, let me check... Huh? This is a 4G of China Unicom? Uh, this is The 4G mobile phone in the city, I can't trace the specific mobile phone number..."

Mobile 4G?Not wifi?

Countless strange dots suddenly formed a line in Shao Lin's mind, forming an even stranger guess.

The author has something to say:

Ref.

[1] Human bacteria/human cell ratio:

Sender, Ron, Shai Fuchs, and Ron Milo."Are wereally vastly outnumbered? Revisiting theratioofbacterialtohost cellsinhumans."?

[2] Forensic Microbiology:

Metcalf, Jessica, L., et al. "Microbial community assembly and metabolic function during mammalian corpsed composition."?Science?351.6269(2016):158-162.

[3] Bone Rose Teeth:

张宪,康文科.1例活埋6年尸体的法医学检验鉴定[J].证据科学,2007,14(1):94-95.

△0907 patch package:

①{Not changed yet} But in Chapter 62, Chen Lingling's confession of why she wanted to scare Shao Yuan will be added. It has nothing to do with the main plot, just a simple explanation.

②I didn’t post it yesterday because I rewrote the reporting order of the forensic team... I wanted to rehabilitate Shao Lin immediately, but this did not conform to the logic of forensic medicine.The modification does not affect the main plot, but the order in which the evidence is displayed does not need to be read repeatedly.