novelraw Chapter 252 Reasoning Analysis and Autopsy
Chapter 252 Reasoning Analysis and Autopsy
Standing in the yard, Chen Yan was holding a blueprint in his hand.
The floor plan of the Panshui Town Criminal Police Station.
The fire started to spread from the duty room and burned all night.
On-duty detective Zhang Yulin died, and the only suspect in custody, Jin Nansheng, who surrendered himself, disappeared.
The surveillance in the detective team was damaged, so no one knew what happened that night.
First, if this was a purely accidental event, then there are a few questions.
How did Jin Nansheng disappear?
The Panshui Town detective team's residence is a row of bungalows.
There is only one exit at the main entrance.
The duty room is next to the gate.
The confinement room where Jin Nansheng was detained was the innermost room.
From the brig, you have to go through three offices, an evidence room, and the gun room.
After that is the duty room.
The fire burned from the duty room, and it can be said that the people inside were blocked from coming out at the first time.
Second, why Zhang Yulin didn't show any signs of struggle when he died.
Chen Yan had just read the autopsy report.
Zhang Yulin's body did not have any obvious trauma, and there was no trace of death caused by mechanical suffocation, and then the body was destroyed in the fire.
According to the autopsy report, Zhang Yulin died of smoke asphyxiation.
However, this is not in line with common sense.
Zhang Yulin did not drink alcohol that day, and no drug ingredients were detected in his body.
So, even if he wasn't awakened the first time the fire broke out, what happened afterwards?
The suffocation caused by the smoke will definitely wake Zhang Yulin up.
And as long as Zhang Yulin wakes up, he will definitely escape.
Even if he couldn't escape at that time, there would be some traces of struggle, right?
At the very least, she wouldn't lie on the bed and wait to die under the Xia Liang 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, the electric kettle will work only when the switch is turned on.
When the hot water inside is heated to the set temperature, the electric kettle will automatically cut off the power, but the switch is not turned off.
Wait until the water inside is 10 degrees Celsius lower than the set temperature, and the electric kettle will restart heating.
The internal detective in charge of purchasing the function of the electric kettle was introducing it to Chen Yan.
What happens if the water boils dry?
There is a sensing device in the kettle. When the water boils dry, it will automatically cut off the power, and it will not turn on again.
According to the purchasing personnel, the sales volume of this electric kettle is very large.
I haven't heard of any safety and quality risks.
Because the electric kettle caused the circuit to catch fire, which caused the fire...
This possibility is not great.
However, the hot water pot has long been burned to slag, and there is no way to make a technical appraisal.
From the point of view of the fire, the conclusion given by the fire department is that the electric kettle was short-circuited, causing an electrical fire.
call……
He let out a long breath of foul air.
Chen Yan and Wang Min left the scene of the fire.
Brother Wang, what's your inference about this case...?
inference?
In the car, Wang Min frowned slightly: According to the situation at the crime scene, there are two inferences.
Number one, is what we see now.
Jin Nansheng didn't know what method to use to unlock the door and escape from the detective team.
Afterwards, an accidental fire broke out, destroying all evidence.
Of course, this inference is just the result of what you can see with the naked eye, and there are many problems in it.
For example, why did Jin Nansheng escape? He turned himself in.
Judging from the situation that day, Jin Nansheng deliberately found fault and hid in the Panshui detective team.
Since he hid here on purpose, why did he run away at night?
For another example, when Zhang Yulin died, there was no trace of struggling, which is even more wrong...
Listening to Wang Min's analysis, Chen Yan also nodded.
Wang Min was right, these questions were also Chen Yan's doubts.
Brother Wang, what about another theory?
Another inference...
Wang Min looked out the window, narrowing his eyes slightly: That is a carefully planned vicious case.
There must be a reason why Jin Nansheng deliberately entered the Panshui Town Criminal Police Team.
For example, to avoid some enemies.
However, the other party did not give up after Jin Nansheng joined the detective team.
At night, after Jin Nansheng was robbed, this accidental fire was planned, Zhang Yulin was killed, and all evidence was destroyed.
Not only that, after Lin Gang arrived, he should have investigated some key clues.
So, they planned that traffic accident again.
After hearing Chen Yan...
Nodding heavily.
Wang Min's inference was basically in the same direction 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 car accident.
Chen Yan has seen through the unexpected illusion.
The other party carefully planned the traffic accident by tampering with the traffic light control box.
Jin Nansheng, the core figure in the case, died on the spot.
Lin Gang, who discovered important clues, was seriously injured and fell into a coma.
Brother Lin, I went to Leigong Mountain that day to meet Jin Nansheng.
It's just that the other party had premeditated and directed the car accident on the road.
Brother Wang... Chen Yan thought for a while, then looked at Wang Min: I have a request.
Ok?
What request, you say.
I want to conduct autopsies on Zhang Yulin and Jin Nansheng again!
Re-post-mortem?
Wang Min was taken aback for a moment, and looked at Chen Yan full of surprise: You know how to do autopsies?
An autopsy is not just a matter of going up and pinching a couple of hands and taking a look.
This is a specialized discipline.
A lot of experience is required.
Sometimes, experience is even more important than technology.
Wang Min has seen Chen Yan's resume countless times.
Even, someone from the general team went to the police academy to investigate Chen Yan's performance during his time in the police academy.
Otherwise, you think that the letter of appointment from the Huaguo Criminal Police Corps is so easy to get.
Is it so easy to be the backup team leader of the Nine Detective Teams?
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 little in Liancheng.
The situation when Zhang Yulin sacrificed was very wrong.
I want to take a look for myself, maybe there is nothing to gain.
Of course it's fine.
Although Wang Min was surprised, he did not raise any objections.
The detectives of the Yunnan Provincial Criminal Police Brigade who arranged to perform an autopsy on Zhang Yulin, although they are big names here.
However, Wang Min admired Chen Yan's meticulous observation ability.
Among other things, it was discovered 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 notice the trace that the safety button on the safety box had been moved.
And Chen Yan could find out.
Afterwards, someone from the Yuecheng detective team got a magnifying glass and carefully observed and studied it more than a dozen times, only to find that the safety button in question, with its luster and fine dust attachments, was indeed different from other safety buttons.
For a while, the members of Yuecheng Criminal Police Team and Yun Provincial Criminal Police Team's serious crime team were shocked by Chen Yan.
Especially the members of the Serious Crime Squad, two of them are members of the Kunming Police Department.
The last time Chen Yan was investigating a weird suicide case in Kunming City, he followed Chen Yan to handle the case.
At 2 o'clock in the afternoon, Chen Yan and Wang Min arrived at Yuecheng Funeral Home.
The body of Comrade Zhang Yulin is stored in freezer No. 3.
Jin Nansheng's body is stored in freezer No. 7.
The case was not investigated, and the body was naturally not cremated.
Opening the freezer, the cold air hits the face.
After opening the body bag, Zhang Yulin's body, which was dissected and stitched up again, appeared in front of Chen Yan and Wang Min.
The body was scorched, and now it was beyond recognition due to the burning of the fire.
On the chest, the y-shaped autopsy incision has been sutured.
There is a very strict process for autopsy.
There are rules on where to place the knife, what kind of edge to cut, and what kind of thread to suture.
The autopsy skill specialization that the system rewards Chen Yan has a detailed introduction.
At a glance, Chen Yan knew that the person who performed the autopsy on Zhang Yulin was a master.
Without him, the knife edge was sutured.
The incisions for autopsy are generally made from the clavicles on both sides, to the back of the sternum, and downward.
Afterwards, follow-up operations are performed.
For example, pathological analysis, pharmacological analysis, and even toxicological analysis of internal organs.
And when sewing, it is also very particular.
Because the skin of the corpse is fragile and has no elasticity.
Therefore, the sutures used for suturing autopsy are different from ordinary medical sutures.
Judging from the stitching of Zhang Yulin's autopsy wound, the detectives in charge of the autopsy were very careful.
The distance of 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 high.
On the other hand, the body of Jin Nansheng taken out of the No. 7 freezer, just judging from the stitching marks, it was not done by one person.
Uneven stitch width, uneven force...
novice.
Because of cryopreservation, it was 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, check whether the deceased was poisoned, etc.
On this point, Chen Yan believed the original autopsy report.
However, even without dissection, many discoveries can be made only through external inspection.
For example, some post-mortem methods recorded in Xin Yuan Ji Lu.
Just like treating 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 conclusion of the autopsy report.
Zhang Yulin has fibrous charcoal on his body, which is the residue after Xia Liang was burned.
Turning on the visual gene lock, Chen Yan scanned Zhang Yulin's body inch by inch.
With his hands, he also groped lightly on the surface of the body.
Disfigured...
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 flat on the bed when he died.
The back is attached to the bed board, so it was not scorched by the fire.
Um?
Chen Yan was slightly taken aback, a small, almost invisible black spot attracted Chen Yan's attention.
what is this?