Chapter 474 Half a Fingerprint (2-in-1, Please Vote for Me!)

On the projector, there are photos of the accident vehicles.

Zhang Chaoyang began to report: "Team Chen, after the accident site investigation was completed, we asked third-party appraisal technicians to conduct a technical appraisal of the scene again."

"From the vehicle's driving trajectory, the entire traffic accident process was re-deduced."

"Based on the degree of damage to the vehicle and analysis of the characteristics of the mountain impact, the vehicle's speed when it hit the mountain was 96 kilometers per hour."

"96 kilometers per hour?"

This speed surprised Chen Yan.

The speed limit on the ring road in the northern suburbs is 100 kilometers per hour. Zhang Baoquan's vehicle was traveling at 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 was involved in the accident.

The location where the vehicle accident occurred was a T-junction. Drive from east to west, turn left to the Ring Road, and turn right to connect to National Highway 212.

In the early hours of this morning, Zhang Baoquan should have been driving back to the city after playing mahjong at the Juyou Card Room. In other words, his normal driving route should be from east to west, then turn left and continue driving on the ring road.

At that time, turning left onto the Ring Road was a roughly 70-degree turn.

With such a large curve, Zhang Baoquan's speed reached 96 kilometers per hour. This was not a turn, it was really taking off.

"If you turn at this speed, even if you don't hit the mountain, you will probably get into an accident, right?"

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

"Judging from the situation at the scene and comprehensive analysis of the data read from the vehicle's driving computer, the vehicle was traveling very fast at the time and was not at a safe speed for turning."

"And based on the analysis of the tire marks at the time, it can be basically determined that the vehicle hit in a straight direction without any deviation during the impact."

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

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

"The electronic unit, brake pedal and hydraulic device that control the brakes also have no faults."

"Are there any signs of human damage?"

Zhang Chaoyang shook his head and switched to the projected picture: "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 braking system has also been completely damaged, and there is no way to detect it."

"But the braking system of the vehicle's rear wheels is indeed intact, and there are no traces of man-made damage."

"Furthermore, even if the front wheel braking system is disabled, if the brakes are applied during a car accident, the braking of the two rear tires will also play a significant drag limiting role in the vehicle's speed."

"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 major findings regarding the inspection of the airbag."

Click.

The projection switches to a photo of vehicle parts.

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

"After the accident, the front of the vehicle was severely crushed and the fuse box was broken into several pieces, but it was not completely damaged."

"Look here, this..."

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

The first condition for the airbag to deploy is that the sensing device is triggered.

"This safety pin is the fuse that ensures power supply to the sensor and air bag."

"Once something goes wrong with this thing, even if the sensor is triggered and the airbag function is intact, the airbag still cannot pop up."

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 magnification is exactly a pin of the safety latch.

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

"If the pins are missing, can it be determined that it is man-made?"

This is Chen Yan's biggest concern.

If there is such a failure under natural circumstances, then there is a possibility that it is not man-made.

If this is possible, it cannot be conclusive evidence.

Sure enough, Zhang Chaoyang shook his head: "According to the technician's analysis, there are two possibilities for the insurance pin pin to break."

"One is man-made, which is the most likely, but it is also possible that the pin itself broke. The possibility of the latter is very small, but it cannot be said to be impossible."

"Of course, to determine whether the pins were artificially damaged, we focused on the socket of the plug."

Another photo was shown on the projection.

"Normally no one will touch this kind of insurance pin. We have checked the maintenance records of this car and there are no problems."

"It can basically rule out the possibility that the insurance pin pins are broken due to maintenance."

"And if it was man-made, the other party would probably throw away the pins, but look here..."

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

"We found that the broken pins of the latch were still inside the socket, which makes it difficult to determine whether the pins were tampered with or broken naturally."

Chen Yan nodded.

What Zhang Chaoyang means is that if there are no broken pins in the socket, it can be determined that the broken pins of the safety pin are man-made, because naturally broken pins cannot escape from the socket on their own.

But now, the broken pin is still in the socket, which makes it difficult to judge.

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

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

Exhaling a breath, Chen Yan leaned back on the chair.

If that were the case, it would be difficult.

However, Zhang Chaoyang's discovery must be more than that, otherwise, he would not have said that he had made a major discovery.

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

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

"Half a fingerprint?"

Chen Yan leaned forward and there were 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 or fuse pin."

"The other party should have been wearing gloves when he damaged the insurance latch, but the pins on the insurance latch are relatively small and are not easy to break when wearing gloves, so the other party most likely took off his gloves at this time, but he did not expect that the pins were so small. His fingerprints can be found on even one of his pins."

Half a fingerprint!

It's enough, even if it's not a little fingerprint line, you can compare and find out who broke the pins of the safety pin.

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

The fuse box is in the engine compartment. To access this thing, you must have a car key and be able to open the engine hood.

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

It’s nothing more than his family and the maintenance workers of the 4S shop.

The maintenance worker at the 4S store had no enmity with Zhang Baoquan, so it was unlikely that he would do such a thing.

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

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

However, even if the possibility of tampering with the maintenance workers of the 4S store is relatively small, you still cannot give up.

And these people are still easy to find. If you look up the maintenance order of the vehicle, which worker did the maintenance and repairs will be recorded.

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

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

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

In addition to the investigation of airbags and braking systems, there is another key task, and that is the driving recorder.

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

No one knows exactly what happened when the accident happened early yesterday morning, but the driving recorder should have captured some of the incident.

"How's the dash cam investigation going?"

However, this time Zhang Chaoyang shook his head in disappointment: "When we inspected 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 confused.

That's why this case is a bit strange.

First, judging from the clue that the pins of the airbag safety pin were 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 are somewhat inconsistent.

If the murderer wanted to fake the accident scene, there was no need for him to remove Zhang Baoquan's body and then crush it with a crusher in the pig farm.

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

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

He wanted to cause an accident, but he used a crusher to crush the body in a high-profile manner.

What did the murderer want to do?

Also, the memory card in the driving recorder disappeared.

This also conflicts with the purpose of creating surprises.

If the murderer really wanted to cause an accident and pulled out the memory card, everyone would know there was something wrong.

Didn't he expose himself on purpose?

The meeting ended quickly.

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

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

Unexpectedly, but certainly expected, Zhang Chaoyang returned to Chen Yan's office only half an hour later.

"Captain, the fingerprint comparison...has the results!"

Chen Yan also had some differences, but with the results coming so quickly, a person flashed through Chen Yan's mind.

Wang Yue!

After Zhang Baoquan died, Wang Yue had half of the inheritance rights of all his properties.

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

The beneficiary of the insurance is herself.

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

So, of course, Wang Yue is the first suspect.

Moreover, Wang Yue's fingerprints and other information had been collected before he was interrogated.

As soon as the meeting here ended, Zhang Chaoyang arranged for the detective to compare the half-fingerprint found on the pin of the insurance pin with Wang Yue's fingerprint.

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

As a result, just after contacting the 4S store, the fingerprint comparison results came out.

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

Chen Yan took the comparison report and read it carefully.

The comparison accuracy is 100%.

The case is very likely to be solved.

"Let's go to the interrogation room and interrogate Wang Yue again!"

Half an hour later, Chen Yan saw Wang Yue in Interrogation Room No. 1.

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

The delicate makeup on his face was no longer there, his eyes were bloodshot, and his mental state was not very good. It was obvious that he had not had a good rest last night.

In fact, Wang Yue probably didn't sleep all night last night.

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

"Wang Yue, look at this."

Wang Yue picked up the report with some confusion and looked at it twice: "What is this?"

What?

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

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

"This thing... is not unfamiliar to you, right?"

Safety latch?

Wang Yue's expression suddenly changed when Chen Yan said the word "insurance bolt".

The hand holding the fingerprint comparison report began to tremble.

Cold sweat broke out on his forehead instantly.

"This is impossible……"

"You... how could it be possible..."

"I...I was...wearing gloves...it's impossible..."

Wang Yue murmured impossible words to himself, his eyes full of fear.

"Wang Yue, it was you who tampered with your husband's car, which ultimately led to the car accident, right?"

"Explain now and we can strive for leniency for you..."

"No!"

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

"Impossible! It's impossible! You must be lying to me!"

"I was wearing gloves when I pulled out the latch. 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 also wear gloves when you broke off the stitches?"

Break the pins?

"You... found my fingerprint... on the pin I inserted into the socket... that thing is so small... how is that possible?"

"Haha, Wang Yue, nothing is impossible. If you don't want others to know it, you have to do it yourself!"

"Tell me, why did you kill Zhang Baoquan?"

"Also, after Zhang Baoquan died early yesterday morning, who took his body to the pig farm and crushed it?"

Faced with Chen Yan's question, Wang Yue seemed not to hear it, and just muttered to himself: "How is it possible...how is it possible..."

Wang Yue seemed to be trapped in a kind of self-doubt.

After a while, Wang Yue seemed to recover from his self-doubt. He smoothed his messy hair and looked at Chen Yan again.

"Officer Chen, I did not kill my husband."

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

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

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

Wang Yue confessed everything she had done.

"I have wanted to kill Zhang Baoquan for more than a day or two. I have wanted to do it a long time ago."

"When he married me, he didn't treat me as a family member at all. We had a pre-nuptial agreement."

"He gives me living expenses regularly, but if he dies, I won't get a cent of his property."

"I told him about this two months ago, but he still didn't agree to void the property agreement we had before our marriage."

"His property will be given to his daughter from now on. I have no choice but to think of other ways."

"A month ago, I bought Zhang Baoquan a personal accidental death insurance behind his back."

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

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

"Originally I planned to fix the brake system next week. As you know, I used to work in a BMW 4S store. Although I am not proficient in these things, I know how to do it."

"In order to prevent the matter from being exposed and you finding me, I also bought an accidental death insurance for myself."

"But Zhang Baoquan's car accident yesterday really had nothing to do with me."

"He was dead before I could tamper with the braking system."

"I didn't lie about one thing. I was at home the night the crime happened and I didn't go anywhere."

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

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

This time, Wang Yue didn't lie.

Compared with yesterday when she was interrogating Wang Yue, she had a natural expression on her face today and no small movements on her hands. She spoke very smoothly without thinking or thinking.

However, if what Wang Yue said is true, then how did Zhang Baoquan get into a car accident early yesterday morning?

Who was the person who smashed his body into pieces?