Chapter 473： half fingerprint

On the projector is a photo of the accident vehicle.

Zhang Chaoyang began to report: "Chen team, after the accident site investigation, we asked third-party appraisal technicians to conduct a technical appraisal on the site again."

"From the trajectories of vehicles, the whole process of the occurrence of traffic accidents is re-deduced."

"According to the degree of damage to the vehicle, combined with the analysis of the characteristics of the mountain impact, the vehicle hit the mountain at a speed of 96 kilometers per hour."

"96 kilometers per hour?"

This speed surprised Chen Yan.

The speed limit of the ring road in the northern suburbs is 100 kilometers per hour. Zhang Baoquan's vehicle traveled at a speed of 96 kilometers per hour before hitting the bottom of the mountain. Although it did not exceed the speed limit, it was very unreasonable.

That's where the vehicle accident happened.

The location of the vehicle accident is a T-junction. Driving from east to west, turn left to the ring road, and turn right to connect to National Highway 212.

Early this morning, after playing mahjong from the Juyou Chess and Cards Room, Zhang Baoquan should be driving back to the city, which means his normal driving route should be from east to west, then turn left and continue driving on the ring road.

At that time, the left turn into the ring road was a turn of about 70 degrees.

With such a large camber, Zhang Baoquan's speed reached 96 kilometers per hour. Where is he going to turn? This is a special takeoff.

"If you turn at this speed, even if you don't hit the mountain, it is estimated that something will happen, right?"

Zhang Chaoyang nodded and played the next photo: "The answer given by the technician is the same."

"Judging from the situation at the scene, as well as reading the data in the vehicle's driving computer for comprehensive analysis, the speed of the vehicle was very fast at that time, and there was no safe speed for turning."

"And based on the analysis of the tire tracks at the time, it can be basically determined that the vehicle hit a straight line during the impact process, and the direction did not deviate in any way."

"At the same time, the technicians also conducted a comprehensive inspection of the braking system."

"Both pads and discs are in good condition with no signs of excessive wear."

"The electronic unit that controls the brakes, the brake pedal and the hydraulics are all faultless."

"Are there any traces of man-made damage?"

Zhang Chaoyang shook his head and switched the projected pictures: "This is an inspection picture of all the braking systems of the vehicle."

"The front wheel has been completely scrapped due to the impact, and the brake system has been completely damaged, so there is no way to detect it."

"But the braking system of the rear wheel of the vehicle is indeed intact, and there is no trace of any vandalism."

"Also, even if the braking system of the front wheels is passive, if the brakes are braked during the accident, the braking of the two tires of the rear wheels will also play a large drag-limiting effect on the speed of the vehicle."

"So, it is initially judged that there is no major problem with the braking system."

"How's the airbag investigation going?"

Hearing Chen Yan mention the airbag, Zhang Chaoyang nodded heavily: "We have made a major discovery about the inspection of the airbag."

Click.

Projection switching, is a photo of vehicle parts.

"Chen team, this is the fuse box of the accident vehicle."

"After the accident, the front of the vehicle collapsed very badly, and the fuse box also shattered into several pieces, but it was not completely damaged."

"Look here, this..."

Zhang Chaoyang pointed to a safety pin in the fuse box on the screen: "This safety pin is the safety pin that controls the detonation of the vehicle's airbag."

The first condition for the deployment of the airbag is that the induction device is triggered.

"This fuse pin is the fuse that guarantees power to the sensor and airbag."

"Once there is a problem with this thing, even if the sensor is triggered and the airbag is functioning perfectly, the airbag still won't deploy."

Switching the projection is a safety pin that has been pulled out.

"Look, one of the pins of this latch is broken and missing."

The projection is enlarged, which is a pin of the safety pin.

"And the pin is missing, the latch is actually in a power-off state, which means that the car's airbag is actually in a non-working state."

"Can the missing pins be determined to be man-made?"

This is the question that Chen Yan is most concerned about.

If there is such a failure under natural circumstances, there is a non-artificial possibility.

If there is this possibility, it cannot be conclusive evidence.

Sure enough, Zhang Chaoyang shook his head: "According to the analysis of the technicians, there are two possibilities for the breakage of the safety pin."

"One is man-made. This probability is the highest, but it is also possible that the needle itself breaks. The possibility of the latter is very small, but it cannot be said that there is no."

"Of course, to determine whether the pins are artificially damaged, we focused on the sockets with the pins."

Another photo is shown on the projection.

"This kind of safety pin is usually not moved by anyone. We have checked the maintenance records of this car, and there is no problem."

"It is basically possible to rule out the possibility of the breakage of the fuse pins due to maintenance."

"And, if it's man-made, the other party is likely to throw away the pins, but everyone look here..."

The photo on the projection is enlarged, and Chen Yan and others can clearly see a broken pin in the jack.

"We found that the pin with the broken pin was still inside the socket, which made it difficult to determine whether the pin was vandalized or a natural break."

Chen Yan nodded.

Zhang Chaoyang means that if there are no broken pins in the socket, then it can be determined that the broken pins of the safety latch are artificial, because the naturally broken pins cannot run out of the socket by themselves.

But now, the broken pin is still in the socket, which is not easy to judge.

Because of this reason, it is possible that the pins break naturally, or it may be man-made.

However, after breaking the pin, the person did not throw the pin away, but plugged it back into the socket again.

Letting out a suffocating breath, Chen Yan leaned back on the chair.

If it was just that, it would be difficult.

However, Zhang Chaoyang's discovery is definitely not only that, otherwise, he would not say that there is a major discovery.

Sure enough, Zhang Chaoyang paused: "However, we found another piece of evidence."

"Look here." Zhang Chaoyang switched the projection, and it turned out to be the broken pin: "Later, we took out the broken pin in the socket and found half a fingerprint on this pin."

"Half a fingerprint?"

Chen Yan leaned forward and had fingerprints, which meant that this thing must have been vandalized.

"Yes!"

Zhang Chaoyang's tone was a little excited: "The other party should be very cautious."

"We found no fingerprints on the vehicle's fuse box nor on the fuse latch."

"The other party should have been wearing gloves when he damaged the safety pin, but the pins on the safety pin are relatively small, and it is not easy to break when wearing gloves, so the other party may have taken off the gloves at this time, but he did not expect that the small His fingerprints could also be left on one of his stitches."

Half a fingerprint!

Enough, even as long as it is not a little fingerprint line, you can compare who broke the pin of the safety pin.

Moreover, it is not difficult to delineate the scope of this person.

The fuse box is in the engine compartment, to access this thing, you must have the car key to open the bonnet.

In addition to Zhang Baoquan himself, who else has access to the car keys of this car?

Nothing more than his family and the maintenance workers of the 4S shop.

The maintenance worker of the 4S shop has no grievances with Zhang Baoquan, and it is unlikely that they will do such a thing.

The most likely one is Wang Yue, Zhang Baoquan's second wife.

Wang Yue and Zhang Baoquan have no hatred, but they have interests.

However, even if the maintenance workers in the 4S shop are less likely to do tricks, they still cannot give up.

And these people are still easy to find. Check the maintenance list of the vehicle and which worker did the maintenance. This is all recorded.

"Chaoyang, immediately organize people to compare the half fingerprints!"

"The point is Zhang Baoquan's wife, and there will be maintenance workers who have maintained the vehicle!"

****************************

In addition to the investigation of airbags and braking systems, there is also a key work, that is, the driving recorder.

Zhang Baoquan's car is a flagship sedan with a very high configuration, and the vehicle itself has a built-in driving recorder.

When the accident happened in the early hours of yesterday, no one knows what happened, but the dash cam should have captured some of what happened.

"How's the dash cam investigation?"

However, this time Zhang Chaoyang shook his head in disappointment: "When we tested the vehicle, we found that the memory card of the driving recorder had been removed."

unplugged?

The murderer pulled it out?

Chen Yan was a little puzzled.

That's what makes this case a little weird.

First, judging from the clue that the pin of the airbag safety pin was deliberately broken, the murderer wanted to kill Zhang Baoquan, but the purpose was to cause Zhang Baoquan's death in an accidental way.

However, if the murderer really wanted to cause Zhang Baoquan's death in an accidental way, then the reasoning and the actual situation found at the scene were somewhat inconsistent.

If the murderer wants to fake the accident scene, then there is no need for him to remove Zhang Baoquan's body and smash it with a pulverizer in the pig farm.

Doing so will serve no purpose other than to attract the attention of the police.

Unless the other party wants to destroy the body and cover up something.

Want to make an accident, but use a shredder to smash the corpse in a high-profile manner.

What is the murderer trying to do?

And the memory card in the dash cam disappeared.

This also conflicts with the purpose of creating surprises.

If the murderer really wants to create an accident and pull out the memory card, everyone knows that there is a problem here.

Isn't it also intentional to expose yourself?

The meeting ends soon.

Zhang Chaoyang carried out fingerprint comparison according to Chen Yan's request.

No matter what the murderer's purpose is, as long as someone is found, everything will be clear.

Unexpectedly, and of course also expected, only half an hour later, Zhang Chaoyang returned to Chen Yan's office.

"Captain, the fingerprint comparison... there is a result!"

Chen Yan also had some differences, but there was a result so soon, a person flashed in Chen Yan's mind.

Wang Yue!

Zhang Baoquan died, and Wang Yue owns half of his inheritance.

Moreover, a month ago, Wang Yue also bought Zhang Baoquan a 5 million accidental death insurance.

The beneficiary of the insurance is herself.

It can be said that if Zhang Baoquan died unexpectedly, Wang Yue would be the biggest beneficiary.

Then, of course, Wang Yue was the first suspect.

Moreover, before Wang Yue was interrogated, his fingerprints and other information had been collected.

Just after the meeting here, Zhang Chaoyang arranged for the detective to compare the half fingerprint found on the pin of the safety pin with Wang Yue's fingerprint.

Then start arranging the information inquiry of the workers who repair and maintain the car in the 4S shop.

As a result, the 4S shop has just finished contacting, and the fingerprint comparison result here has already come out.

The half fingerprint found on the broken pin of the safety pin belongs to Wang Yue!

Taking the comparison report, Chen Yan read it carefully.

The comparison accuracy is 100%.

The case is likely to be solved.

"Go, go to the interrogation room and interrogate Wang Yue again!"

Half an hour later, Chen Yan met Wang Yue in the No. 1 interrogation room.

Compared with last night, Wang Yue is a little haggard today.

The delicate makeup on his face is gone, his eyes are bloodshot, and his mental state is not very good. Obviously, he didn't rest well last night.

Even, Wang Yue should have slept all night last night.

Without any nonsense, Chen Yan directly put the fingerprint comparison report in front of Wang Yue.

"Wang Yue, look at this."

Wang Yue picked up the report with some doubts and glanced at it: "What is this?"

What?

"Wang Yue, this is a fingerprint comparison report."

"We found a fuse with a broken pin in the fuse box of the accident vehicle your husband was driving."

"This thing... are you familiar with it?"

Insurance pin?

Hearing Chen Yan say the word "insurance bolt", Wang Yue's expression changed suddenly.

The hand holding the fingerprint comparison report began to tremble.

The cold sweat on his forehead instantly soaked out.

"This is impossible…"

"How... how could you..."

"I...I was...gloved...impossible..."

Wang Yue muttered impossible words to herself, her eyes were full of fear.

"Wang Yue, it was you who moved your husband's car and caused the accident, right?"

"Now explain, we can try to give you leniency..."

"Do not!"

Suddenly, Wang Yue's hysterical roar interrupted Chen Yan's words.

"Impossible! Impossible! You must be lying to me!"

"I was pulling the pin with gloves, how could I leave fingerprints?"

"Gloves?"

Chen Yan sneered: "Wang Yue, you did wear gloves when you pulled out the safety pin, and we didn't find your fingerprints on the safety pin."

"But did you wear gloves when you broke the stitches?"

Broken pins?

"You...found my fingerprints on the pins I plugged into the socket...that thing is so small...how is that possible?"

"Hehe, Wang Yue, nothing is impossible. If you want people to not know, you must do it yourself!"

"Say, why did you kill Zhang Baoquan?"

"Also, after Zhang Baoquan died early yesterday morning, who put his body into the pig farm and smashed it?"

Facing Chen Yan's questioning, Wang Yue seemed to have never heard of it, and just muttered to himself, "How is it possible... how is it possible..."

Wang Yue seemed to have fallen into a kind of self-doubt.

After a long while, Wang Yue seemed to recover from self-doubt, brushed her messy hair, and looked at Chen Yan again.

"Officer Chen, I didn't kill my husband."

Without waiting for Chen Yan to ask, Wang Yue continued: "I admit that I broke the pin of the safety latch."

"I'm not afraid to tell you, not only that, but I also plan to destroy the hydraulic device that controls the brakes."

"It's just that before I could do it, he died!"

Wang Yue explained everything she had done.

"It's not been a day or two that I wanted to kill Zhang Baoquan. I wanted to do it a long time ago."

"He didn't treat me as a family at all when he married me. The two of us had a prenuptial agreement."

"He pays me a living allowance on a regular basis, but if he dies, I won't get a cent of his property."

"I told him about it two months ago, but he still doesn't agree to void our prenuptial property agreement."

"His property will be given to his daughter in the future. I have no choice but to think of other ways."

"A month ago, I bought Zhang Baoquan a personal accident death insurance for him."

"The insurance limit is 5 million. As long as he dies, although I can't get his property, I still have 5 million in compensation."

"Then I started to implement my plan. A week ago I broke the pin of the safety latch of Zhang Baoquan's airbag."

"I originally planned to get the brake system next week. You know, I used to work in the BMW 4S shop. Although I am not proficient in these things, I know how to do it."

"In order to prevent you from finding out about me, I also bought an accidental death insurance for myself."

"However, Zhang Baoquan's car accident yesterday has nothing to do with me."

"He died before I could do anything with the brakes."

"I didn't lie about one thing, I was at home the night of the incident and didn't go anywhere."

"If Zhang Baoquan's death is related to the failure of the vehicle's airbag, I am willing to take responsibility, but I did not kill him."

"As for why someone took his body to a pig farm and smashed it, I really don't know."

This time, Wang Yue didn't lie.

Compared with when Wang Yue was interrogated yesterday, she had a natural expression on her face today, and she didn't have any small movements in her hands, and she spoke without thinking or thinking, and she was very smooth.

However, if what Wang Yue said is true, then how did Zhang Baoquan's car accident happen in the early morning yesterday?

Who was the one who smashed his body to pieces?