Chapter 252： Inferential Analysis and Post-mortem

Standing in the courtyard, Chen Yan held a blueprint in his hand.

The floor plan of the Panshui Town Detective Team.

The fire started to spread from the duty room and burned for a whole night.

Detective Zhang Yulin on duty died, and Jin Nansheng, the only suspect who surrendered himself to theft, disappeared.

The surveillance cameras in the detective team were broken, so no one knew what happened that night.

First, if this is a pure accident, there are several problems.

How did Kim Nam Sang disappear?

The location of the Panshui Town Detective Team is a row of bungalows.

There is only one exit from the main entrance.

The duty room is next to the door.

The confinement room where Jinjin Nansheng was locked was the innermost house.

From the confinement room, you have to pass three offices, an evidence room, and a gun room.

After that is the duty room.

The fire burned from the duty room, it can be said that the people inside were blocked from coming out at the first time.

Second, why did Zhang Yulin show no signs of struggling when he died.

The autopsy report Chen Yan has just read.

Zhang Yulin's body did not have any obvious trauma, and there was no mechanical suffocation leading to death, and then the corpse was destroyed in the fire.

According to the autopsy report, Zhang Yulin died of smoke suffocation.

However, this is not normal.

Zhang Yulin did not drink alcohol that day, and no drug substance was detected in his body.

So, even if he didn't wake up the first time the fire broke out, what happened after that?

The suffocation caused by the smoke will definitely wake Zhang Yulin.

And as long as Zhang Yulin wakes up, he will definitely escape.

Even if he couldn't escape at the time, there would still be some signs of struggle, right?

At the very least, he won't lie on the bed and wait to die under Xia Liang's quilt.

Third, the electric kettle that caused the fire.

Chen Yan just had someone bring an identical electric kettle.

This electric kettle is semi-automatic.

After setting the water temperature, turn on the switch to make the electric kettle work.

When the hot water inside is heated to the set temperature, the electric kettle will automatically power off, but the switch is not turned off.

"When the water inside is 10 degrees Celsius lower than the set temperature, the electric kettle will restart heating."

The internal detective responsible for purchasing the electric kettle function is introducing Chen Yan.

"What if the water dries up?"

"There is an induction device in the kettle. When the water is dry, it will automatically power off and will not start again."

In the words of the purchasers, the sales of this electric kettle are very large.

I haven't heard of any safety and quality risks.

Because the electric kettle caused the circuit to catch fire, resulting in a fire...

That's not very likely.

However, the kettle has long been burned into slag, and there is no way to do technical identification.

From the point of fire, the conclusion given by the fire department is that the electric kettle is short-circuited, causing an electrical fire.

call……

He let out a long breath.

Chen Yan and Wang Min left the fire scene.

"Brother Wang, about this case... what inferences do you have?"

inference?

In the car, Wang Min frowned slightly: "Based on the circumstances of the crime scene, there are two inferences."

"Number one, that's what we're seeing now."

"Jin Nansheng didn't know what to do, he unlocked the door and escaped from the detective team."

"Afterwards, an accidental fire broke out, destroying all evidence."

"Of course, this inference is just the result of what the naked eye sees, and there are many problems in it."

"For example, why did Jin Nansheng run away? He turned himself in."

"Judging from the situation that day, Jin Nansheng deliberately found fault and hid in the Panshui Detective Team."

"Since he deliberately hid in, why did he run away at night?"

"For another example, when Zhang Yulin died, there was no trace of struggle, which is even more wrong..."

Listening to Wang Min's analysis, Chen Yan nodded.

Wang Min is right, these questions are also Chen Yan's doubts.

"Brother Wang, what about another inference?"

"Another corollary..."

Wang Min looked out the window, her eyes narrowed slightly: "That was a carefully planned vicious case."

"Jin Nansheng deliberately entered the Panshui Town Detective Team. There must be a reason."

"For example, to avoid some enemies."

"However, the opponent did not give up after Jin Nansheng entered the detective team."

"At night, after robbing Jin Nansheng, he planned this accidental fire, killed Zhang Yulin, and destroyed all the evidence."

"Not only that, after Lin Gang arrived, he should have investigated some key clues."

"So, they planned that accident again."

After Chen Yan heard...

Head hard.

Wang Min's inference is basically the same as Chen Yan's inference.

The fire caused by the electric kettle is not so much an accident as it is to destroy the corpse.

And Lin Gang's pick up the car accident.

The unexpected illusion has been seen through by Chen Yan.

The other party carefully planned the traffic accident by playing tricks on the traffic light control box.

The core figure in the case, Jin Nansheng, died on the spot.

Lin Gang, who found a major clue, was seriously injured and fell into a coma.

"Brother Lin, going to Leigong Mountain that day should be to meet Jin Nansheng."

"It's just that the other party had a plan, and the car accident was directed on the road."

"Brother Wang..." Chen Yan thought for a while, then looked at Wang Min: "I have a request."

"Um?"

"What do you want, you say."

"I'm going to re-examine Zhang Yulin and Jin Nansheng!"

Re-autopsy?

Wang Min was stunned for a moment, and looked at Chen Yan with surprise: "Do you still understand autopsy?"

For autopsy, it is not enough to go up and squeeze two hands and take a look.

This is a specialized discipline.

Requires very extensive experience.

Sometimes experience is even more important than technology.

Chen Yan's resume, Wang Min has seen it many times.

There was even someone from the corps who went to the police academy to investigate Chen Yan's performance in the police academy.

Otherwise, you would think that the letter of appointment from the Huaguo Detective Corps is so easy to get.

The team leader backup of the nine major detective teams, is it so easy to be?

However, I never heard that this kid studied autopsy at the police academy.

Looking at Wang Min's expression, Chen Yan knew what Wang Min was thinking: "I learned a bit in Liancheng."

"The situation when Zhang Yulin sacrificed is very wrong."

"I want to take a look for myself, maybe there's nothing to gain."

"Of course it's fine."

Although Wang Min was surprised, she did not raise any objections.

The Yunxing Detective Brigade arranged for Zhang Yulin to perform an autopsy on the detective, although he was a great figure here.

However, Wang Min admired Chen Yan's meticulous observation.

If nothing else, it was found in the traffic light control box in the morning.

Wang Min personally inspected the control box.

Every detail, every switch, every screw or button.

How could an old detective like Wang Min make such low-level mistakes.

However, Wang Min really didn't find any traces of the safety button on the safety box being passed.

And Chen Yan can find out.

After that, someone from the Yuecheng Detective Team found a magnifying glass, carefully observed and studied it a dozen times, only to find that the safety button in question, the gloss on it, and the fine dust attachments, were indeed different from other safety buttons.

For a time, the members of the Yuecheng Detective Team and the Yun Provincial Detective Team's Serious Crime Team were shocked by Chen Yan.

In particular, there are two members of the serious crime team, who themselves serve in the Kun City Detective Team.

The last time Chen Yan was investigating a strange suicide case in Kun City, he followed Chen Yan to handle the case.

At 2 pm, Chen Yan and Wang Min came to Yuecheng Funeral Home.

"Comrade Zhang Yulin's body is stored in the No. 3 freezer."

"Jin Nansheng's body is stored in freezer No. 7."

The case was not investigated, and the body was naturally not cremated.

Open the freezer, and the cold air blows.

After opening the body bag, Zhang Yulin's body, which was stitched up after autopsy, appeared in front of Chen Yan and Wang Min.

The corpse was charred, now beyond recognition due to the burning of the fire.

On the chest, the Y-shaped autopsy incision has been sutured.

Autopsy is a very strict procedure.

There are rules for where to cut the knife, what kind of incision to cut, and what kind of thread to use for stitching.

The system rewards Chen Yan's autopsy skills specialization, which has a detailed introduction.

At a glance, Chen Yan knew that Zhang Yulin's autopsy was an expert.

Without him, the incision is sutured.

The incision of the autopsy is generally cut from the clavicle on both sides, to the back of the sternum, and down.

After that, perform subsequent operations.

For example, pathological analysis of internal organs, pharmacological analysis, and even poison analysis, etc.

And when it comes to sewing, it's also very particular.

Because the skin of the corpse is fragile and has no elasticity.

Therefore, the sutures used for autopsy examinations are different from ordinary medical sutures.

Judging from the suture of Zhang Yulin's autopsy wound, the detective in charge of the autopsy was very careful.

The distance between each stitch is the same, and the strength is very well controlled.

It not only allows the incision to be sutured, but also does not cause secondary damage to the skin.

Even though Zhang Yulin's body had been destroyed by the fire, Chen Yan could see from the details that the detective in charge of the autopsy not only cherished Zhang Yulin's body very much.

The technology is also extremely superb On the other hand, the body of Jin Nansheng taken out from the No. 7 freezer, just from the suture marks, it is not from the hands of one person.

Stitch width is uneven, strength is uneven...

newbie.

Due to cryopreservation, it is impossible for Chen Yan to conduct an autopsy directly.

However, autopsy is only a means of autopsy.

It is usually used to determine the cause of death, to check whether the deceased is poisoned, etc.

Regarding this point, Chen Yan believed the original autopsy report.

However, even without anatomy, only through external inspection, in fact, many discoveries can be made.

For example, some autopsy methods recorded in "The Collection of Injustices".

It's like seeing a doctor with Chinese medicine.

Corpses, to a certain extent, can also speak.

Chen Yan put on his gloves and began to observe carefully.

Consistent with the findings of the autopsy report.

There is fibrous coke on Zhang Yulin's body, which is the residue after the incineration of the covered Xia Liang.

Turning on the visual gene lock, Chen Yan scanned Zhang Yulin's body inch by inch.

In his hand, he also groped lightly on the surface of the corpse.

face damage...

There are smoke particles in the mouth...

No scars on the back of the head...

There is no sign of a broken neck...

Putting the body on its side, Chen Yan began to observe the back of the body.

Because Zhang Yulin was lying on the bed when he died.

The back fits the bed board, so it is not scorched by the fire.

Um?

Chen Yan was slightly startled, a small, almost invisible black spot attracted Chen Yan's attention.

"what is this?"