Chapter 533 The outrageous cause of death

Chapter 533 The outrageous cause of death

The scene had already been surveyed by the local county police, but it had to be surveyed again.

Officer Fang Gu was not surprised by Lin Xinyi's "unnecessary" request.

Because he himself had read the on-site investigation report issued by the Gunma County Police.

Although he is an agent rather than a police officer, his specialty is intelligence espionage rather than criminal investigation.

But even so, with a pair of eyes with normal vision and an intelligent brain, Officer Fangtani can still see:

With the current professional capabilities of the Gunma Prefectural Police,

They are simply a gang.

Future stars of progress.

"Ahem. Mr. Lin, we have actually considered your opinion a long time ago."

Seeing Lin Xinyi's request to return to the scene for investigation, Officer Jiang Gu responded well prepared:

"Although this case has actually been taken over by our police."

"But on the surface, we still asked the Gunma Prefectural Police to send an application for merger investigation to the Tokyo Metropolitan Police Department through official channels, and let the Tokyo Metropolitan Police Department take over the case."

The case of the unknown female corpse occurred in Gunma Prefecture and is not under the jurisdiction of the Tokyo Metropolitan Police Department.

But the billion-yen robbery involved in this case occurred in Tokyo.

As a senior police officer of the Metropolitan Police Department, Lin Xinyi could naturally go to Gunma County to investigate this case openly and openly, using the name of Tokyo's "special expert".

In this way, he was apparently completing his duties at the Metropolitan Police Department and investigating an ordinary criminal case.

Instead of cooperating with the Japanese police, investigating a confidential case.

This not only concealed the movements of the Japanese public security from the outside world, but also concealed the secret of Lin Xinyi's cooperation with the intelligence agencies, and protected his personal safety.

"Mr. Lin, don't worry."

"I will ask my colleague to communicate with Director Odagiri Criminal Division and ask him to formally put you in charge of the investigation of this unknown female corpse case in the name of the Metropolitan Police Department's Criminal Division."

"And I will also accompany you as a police officer from the Metropolitan Police Department's Investigation Section 1."

"We will never let the outside world, especially the criminal organization, know that you are assisting our public security in investigating this case."

Officer Fangtani revealed this careful and detailed confidentiality arrangement.

Lin Xinyi breathed a sigh of relief:

Although he was certain that Gin and the organization would not be too interested in the so-called "Hirota Masami Case", even if he blatantly followed the Japanese police to the scene to investigate, it was unlikely that he would run into someone from the organization there.

But secrecy is better than no secrecy at all.

The fact that Police Officer Fangtani had arranged his schedule so thoughtfully in advance really saved him some worries.

"Okay, I'm relieved now."

Lin Xin nodded and expressed his approval of the police's arrangement.

"Then when will we go to Gunma County?" Officer Furitani asked.

"There's no rush." ​​Lin Xinyi shook his head: "I haven't finished reading this information yet."

"Let's wait until I finish reading it, maybe."

Maybe we can find some faults in this investigation report that is full of loopholes.

If you rush to investigate without sorting out your mistakes, you will only make more mistakes.

However, considering that the autopsy report, which was not much higher quality than the on-site investigation report, was not produced by the Gunma County police, but was issued by the Japanese police.

Lin Xinyi changed his explanation in front of Officer Jianggu:

"Maybe I can get some more inspiration from these materials."

As he spoke, he held Miss Haiyuan who was quietly listening in his arms with one hand, picked up the thick stack of case files with the other, and began to read attentively again.

The first thing Lin Xinyi read was the on-site investigation report provided by the Qunma County Police:

"really."

He flipped through it roughly and couldn't help but sigh:

"Not only were the on-site temperature and relative humidity not measured."

"The temperature of the maggot mass was not measured either."

"Maggots, maggot balls?"

As soon as Lin Xinyi said this image word that could trigger some bad associations, he could feel that the tea-haired dumpling curled up in his arms could not help but shiver.

Officer Fang Gu couldn’t help but show a slightly curious expression:

"What does maggot mass temperature mean?"

"Does the forensic doctor need to measure the body temperature of the maggots during the autopsy?"

"This is not measuring the body temperature of maggots, but it can be understood as such."

Lin Xinyi briefly popularized the science:

"Compared with the larvae of other insects, the feeding speed and metabolic rate of necrophilic fly larvae, that is, fly maggots, are very fast."

"So when a large number of fly maggots gather in the same part of the body, that is, when a 'maggot mass' is formed inside the body."

"These maggots gathered into clumps will generate a large amount of heat during their activities, making the temperature inside the maggot clumps significantly higher than the ambient temperature, and speeding up the development rate of the fly maggots themselves."

Just like people hugging each other can keep each other warm.

Insects are also living creatures, and they produce heat as long as they are alive.

Sometimes the temperature of the maggot mass may be several degrees higher than the ambient temperature at the scene——

This is especially true when the weather is cold.

Sometimes the bugs on the surface of the corpse have almost stopped growing, but the maggots inside the corpse can still grow normally.

Therefore, if you directly use the ambient temperature to estimate the time of death of the deceased without measuring the temperature of the maggot mass of the corpse, it is easy to make mistakes.

The most troublesome thing is

"I didn't measure the temperature at the site. I can still go back to the site to take a re-measurement."

"But if we didn't measure the temperature of the maggot mass, there would be no chance to make up for it."

The corpses were dragged back to the autopsy room from the crime scene, and the temperature of the maggot mass had already changed with the changes in the environment.

After the corpse was dissected, the maggots accumulated in the body must no longer exist.

So this data is definitely not measurable.

"Judging from the photos of the body taken immediately at the scene, there must be maggots gathering inside the body."

"But now we don't have data on maggot mass temperature, and we don't have on-site measured temperature and humidity data."

Several key data are not available, and if we speculate on the time of death, there will definitely be errors in the estimated results.

But even a half-guessed guess at a rough time frame is better than no conclusion at all.

"Let me try to make some guesses."

"Just use the local climate data provided by the meteorological department as the basis for analysis."

"As for the error caused by the temperature of the maggot mass and the temperature on site, let's not consider it for now."

With that said, Lin Xinyi took out his mobile phone from his pocket and started looking up information "online".

Not long after, his mobile phone’s artificial intelligence assistant “Noah’s Ark” sent him the weather data he wanted:

"The average temperature in the mountainous area where the incident occurred in Gunma County over the past month was."

"About 20 degrees."

As Lin Xinyi expected:

For a long time before the body was discovered, the mountainous area where the crime occurred was not affected by the weather in this world, and climate changes were normal.

Under such stable climate conditions, the detectives' criminal investigation experience is still fully applicable.

Lin Xinyi finally felt relieved.

Officer Fang Gu glanced over curiously:

"Mr. Lin, your cell phone."

“Can we still find climate data?”

Can mobile phones access the Internet? So smart?

Officer Furitani felt that his world view had been impacted.

Lin Xinyi nodded lightly: "Of course."

He put his Internet-connected mobile phone back into his pocket and said:

"I asked a 'friend' to look it up online for me."

"Um" Officer Jianggu's mouth twitched slightly:

This smartphone.

It turns out to be "artificial intelligence".

He didn't take this matter to heart, nor did he ask Lin Xinyi which of his friends had such a fast Internet speed and such a strong ability to retrieve resources.

But even if the Fanggu police officer asked, Lin Xinyi was not worried.

Because "Noah's Ark", as a science fiction-level artificial intelligence, itself exists beyond today's world.

It doesn't matter even if people know that he has a relationship with Noah's Ark.

Anyway, no one in the world can pose a threat to a free artificial intelligence.

If it weren't for the data storage departments of special agencies such as the "winery", FBI, CIA, Japanese public security and other special agencies, they would all directly adopt the physical-level defense method of "unplugging the network cable".

Just relying on the power of one "person" in Noah's Ark is enough to turn these behemoths hidden under the dark curtain upside down.

But, then again.

Although Noah's Ark is very capable, it is also very limited in how it can help Lin Xinyi.

Like those in science fiction movies, remote car hacking, remote control drones, camera hacking, overheating of prosthetics, electromagnetic short circuits, etc.

It can't do anything.

Because there are no connected smart cars, smart phones, or smart drones at all.

Internet-connected cameras do exist, but...

There are so few cameras in Tokyo.

To put it harshly, what is it enough for?

After all, it is still the 1990s when Internet technology is far from popular.

And they are in a "backward" country that is still using fax machines to tally case data in 2020.

Therefore, Noah's Ark can't make a living without rice. Even if it really wants to help because of that little friendship, it can't help much.

It would be nice to be a search engine.

like now

At least it helped Lin Xinyi solve the trouble of checking climate data online:

"The average temperature at the crime scene over the past month has been around 20 degrees."

"And the maggots found inside the body"

Lin Xinyi obtained the climate data of the place where the crime occurred, and began to carefully observe the close-up photos of maggots.

Because "maggot" is a general term, it generally refers to the larvae of insects of the order Diptera.

There are five common types of necrophilic flies under the suborder Diptera: Myrididae, Calliphoridae, Sarcophagidae, Pleurophoridae, and Myrmididae.

The order, family, genus and species of the kingdom are divided into genera and species. Under each family, there are genera and species.

Each type of fly develops at a different rate.

To use forensic entomology to make speculations, you must master the morphological characteristics of various common fly maggots.

This requires looking at photos of maggots regularly until you can see the tiny features of various maggots.

It is best to raise them with your own hands, including all kinds of maggots.

"Well, this thesis topic is an opportunity."

"It seems that we have to tailor a practical training course on forensic entomology for Miss Maori."

Lin Xinyi couldn't help but think of his proud disciple.

He was training this girl as a future all-around forensic doctor, so naturally he had to make her proficient in forensic entomology.

So he thought of a lot of persecution in an instant

A great way to exercise the Maorilan.

At the same time, Lin Xinyi did not forget to do the job at hand:

"Fly larvae in this photo."

"This larva has multi-pointed small spines with strong keratinization at the top on the front edge of the body segments and the abdominal pad. There are 8 to 9 oblique rows of small black spines surrounding the posterior edge of the scolex. The posterior valve is larger, and the posterior surface is more concave. shallow."

He looked at a magnified close-up photo of a fly maggot and observed it repeatedly before confirming:

"This should be the third instar larvae of the golden fly."

The big-headed golden fly is a kind of fat fly with a metallic green abdomen, copper reflection and blue luster.

That is the common "blow fly".

In summer, you can often see dry toilets in rural areas.

This kind of fly is also widely distributed in Japan, and it is not uncommon to see it in Gunma Prefecture.

It is also one of the most common necrophilic insects, so Lin Xinyi is very familiar with the growth and development cycle of this fly.

There is no need to look up data online, he can recite it directly.

Although this is the experimental record data of a certain city in China where he used to work, but now the conditions are limited, Lin Xinyi can only copy the old experience to the Tokyo area for use:

"When the average temperature is around 20 degrees, the egg stage plus larval stage of the golden fly, that is, the time from egg laying to larvae pupating, is about 9 days."

"The pupae of the golden fly have been found at the crime scene, which shows that the deceased died at least nine days ago."

Lin Xin found out the lower limit of death time and said:

"Although there were pupae at the scene, no pupa shell was found."

"This shows that none of the fly larvae in the corpse has developed enough to emerge from the pupa and emerge from the pupa into an adult."

"When the temperature is 20 degrees, it takes about 17 days from laying eggs to emerging."

"So, the time of death of the deceased"

"It's roughly between 9 and 17 days."

Lin Xinyi finally gave a rough range.

Officer Fang Gu's eyes lit up and he couldn't help asking:

"Can you be more precise?"

"sure."

"Observing the development status of insect pupae, combined with the succession rules of necrophilic insect communities, can also make inferences accurate to the sky."

"But that doesn't make sense."

Lin Xinyi sighed helplessly:

There is no on-site temperature data, no maggot mass temperature data, and even the succession rules of insect communities, he directly copied domestic experience.

The possible errors are already large enough.

The time range he gave of "9 to 17 days" is not accurate, so how can he dare to make the conclusion accurate to the day?

"If you are not sure, don't blindly pursue narrowing the scope of the investigation."

“Otherwise, it’s easy to miss the correct answer, and all the effort you save will be in vain.”

Lin Xinyi said this and continued to read the information.

Now the deceased's age, gender, race, and approximate death time range have been determined.

As a medical examiner, the next thing he focuses on is the autopsy report and his peers’ judgment on the cause of death:

"The 3rd, 4th, and 5th ribs on the left side all had comminuted fractures near the sternum, and the 8th rib on the left side had comminuted fractures near the anterior axillary line. There was no skull fracture, no fracture of the long bones of the limbs, and no tooth defects."

The rest of the deceased's body was uninjured—at least, no injuries could be seen on the skeletal corpse.

But the chest felt like it had been hit by a car, almost blown apart by a huge force.

Just looking at the bones can cause pain.

So in the autopsy report, the coroner’s colleague concluded:

"Multiple comminuted rib fractures, suspected to be accidental fractures caused by vehicle impact."

"However, traffic accidents often cause systemic injuries. It is rare that the chest is severely damaged, but there are no signs of fractures in other parts."

"And the crime scene is located in a deep mountain and dense forest, which does not meet the conditions for a traffic accident."

"So the possibility of a vehicle collision is ruled out."

Until this point, Lin Xinyi nodded repeatedly:

It seems that although the forensic colleague invited by the Japanese Public Security Bureau is a little wet, he does not lack practical research experience.

At least this large area of ​​bone damage will not be misjudged as caused by a traffic accident.

Lin Xinyi was about to give a thumbs up to this colleague whom he had never met before.

But when he scanned down, he saw the final conclusion given by his colleague:

"Final presumed cause of death:"

"Extensive organ rupture caused by unarmed attack, and subsequent acute hemorrhagic shock."

"???" Lin Xinyi's mouth twitched violently:

Obviously, traffic accidents and accidental fractures, which are the most misleading, have been ruled out. If you carefully observe the fracture shape of the corpse, you can get the correct answer.

Why did you get such an outrageous answer in the end?

What on earth are the forensic doctors of the Japanese police doing?

How dare you give such an absurd conclusion in this autopsy report?

"Attack with bare hands?"

"This is nonsense!"

Lin Xinyi was really angry.

Although this world is the world of detectives, forensic doctors are just playing a supporting role.

But even if you become a piece of cake and become useless, you can't lose even the most basic professional qualities!

"What, what's wrong?"

Officer Furitani didn't realize where this conclusion was wrong.

Seeing Lin Xinyi, a forensic expert, criticize the professional ability of the Japanese public security coroner so harshly.

He had no choice but to ask cautiously:

"This is the cause of death judgment given by our coroner. Is there anything wrong?"

"It's not just a mistake, it's simply outrageous!"

"Officer Furuya, look at how the bones in the deceased's chest are broken into pieces——"

'Such serious violent injuries'

"How is it possible that a human can hit it with bare hands?!!"

"If someone can deal such damage with bare hands, is he still a human being?"

To be able to come up with such an outrageous conclusion is no longer an ordinary scam.

How can you do a good job in criminal investigation with such a gangster? !

"Hmph!" Lin Xinyi was so angry that he slapped the information on the table.

Snapped--

Accidentally, I used too much strength.

The sturdy coffee table made of solid wood was immediately smashed into several petals by his palm.

Lin Xinyi: "."

Jianggu Ling: "."

There was an eerie silence.

Lin Xinyi, who had just been immersed in the atmosphere of scientifically solving crimes, finally reacted belatedly.

"Cough cough cough cough."

Somewhat embarrassedly, he picked up the stack of documents from the remains of the coffee table:

"Sorry, I forgot"

"It seems like you can inflict this kind of damage with your bare hands."