Chapter 242: Re-Investigating the Scene

Sun Xiaolu conveyed a more important piece of information.

"In early July, Lao Duan told me that he wanted to buy me a 20-gram gold bracelet and a 20-gram necklace."

"He also said he would take me to Coconut City for a trip."

"Pooh!"

"The money he earns every month is only a few thousand yuan, and it goes to his parents. There is not much left over to pay for his son's child support."

"Where can he buy me a bracelet worth tens of thousands of dollars?"

"I rely on him to buy bracelets... Haha, it's not as good as my mother's for a month..."

"Anyway, I didn't take it seriously. However, if there is anything unusual about Lao Duan, this is quite strange."

In early July, Duan Zhongxin actually promised Sun Xiaolu to buy her gold jewelry.

I also want to travel to Coconut City.

Duan Zhongxin works as a truck driver, but his income is not high.

Excluding the cost of maintaining the car and the management fees paid to the company, the monthly income is only a few thousand yuan.

When it's good, it's seven or eight thousand, and when it's low, it's four or five thousand.

In addition to paying for his elderly and sick parents, the money is also used to pay living expenses for himself and his ex-wife's children.

At the end of the day, I can have two to three thousand left a month, which is pretty good.

The money was basically used to buy clothes or other expenses for Sun Xiaolu.

It is basically impossible to save money.

Therefore, Duan Zhongxin wants to buy gold jewelry for Sun Xiaolu and take her to the coconut market.

Sun Xiaolu would naturally feel strange.

Because all of this requires money.

However, a month later, Duan Zhongxin died.

So, does the cause of his death have anything to do with what Sun Xiaolu said?

This is certainly a possibility.

There are two biggest reasons for killing people.

One is for profit, the other is for feelings.

Speaking of relationships, looking at it now, the possibility is unlikely.

As far as Sun Xiaolu's matter is concerned, it is possible that Duan Zhongxin killed others, and others killed him for Sun Xiaolu...

hehe.

As for money, Duan Zhongxin's career does not provide much other income.

So what was the reason that made Duan Zhongxin make a promise to Sun Xiaolu.

office.

Chen Yan was thinking alone.

All the current personnel seem to be possible murderers.

However, it seems that everyone has reasons or evidence for not being the murderer.

Duan Zhongxin, how did he die?

The investigation of interpersonal relationships has basically reached a very deep level.

The relevant people are already within Chen Yan's sight.

However, these people have no obvious loopholes.

Therefore, Chen Yan must change his thinking on solving the case.

Since the suspect cannot be found through interpersonal relationships, we have to find a solution through death itself.

That's how to crack the locked room murder case.

However, Chen Yan had already inspected the floor, roof, walls and wooden doors of the red brick house.

impossible.

The murderer couldn't have done anything in these places.

The entire red brick house was empty except for a dilapidated bookcase...

etc!

bookcase!

Inside the red brick house, Chen Yan really observed every detail.

Linoleum on the roof, red bricks on the walls, broken bricks on the ground, hinges on the wooden doors, etc.

But except this bookcase.

Of course, the wooden bookcase itself is nothing.

Chen Yan has researched it and found that the bookcase is made of simple solid wood and is relatively simple.

To put it bluntly, it is just a few wooden boards embedded in the wall. The structure is not complicated. At first glance, it does not seem to have a complicated structure.

However, it was precisely because of this simple structure that Chen Yan overlooked an important piece of information.

Chen Yan did not check the bricks behind the bookcase one by one.

Is there any problem here?

Thinking of this, Chen Yan picked up the phone: "Captain Hu, let's go to the scene to take a look tomorrow morning!"

It's already night now, and the light is not good. Tomorrow, during the day, we can see more clearly.

…

It's nine o'clock the next morning.

Abandoned warehouse, red brick building.

Turning on the emergency lights inside, Chen Yan went directly to the bookcase.

"Team Leader Chen," Hu Xueying saw Chen Yan going straight to the bookcase and knew what Chen Yan meant: "I also studied this bookcase at the time."

"But there's nothing wrong with the wall behind the cabinet."

"Although it has not been removed, we have inspected the outside of the wall where the bookcases are embedded."

"It's also red bricks, with no signs of damage or re-laying."

Indeed, a few wooden boards were embedded in the wall, but nothing could be seen.

The red brick wall outside is still a red brick wall.

There is a thick layer of dust on the bookcase.

There are also traces of random groping.

"These traces were left by Duan Zhongxin, Yu Huihui and Tang Muqi when they groped for the exit after waking up for the first time."

Chen Yan nodded.

This is recorded in the dossier.

When the three woke up for the first time, they found themselves locked in a dark, airtight house, and began to look for an exit.

After groping for the wooden door, the three of them tried to open it.

However, after struggling for a long time, the three of them failed to open the wooden door.

At that time, Duan Zhongxin proposed to bolt the wooden door to prevent people from outside from coming in and harming them.

After that, the three of them fainted again.

When he woke up again, it was when Zhang Baoshan reported the crime and the detective opened the wooden door.

However, at this time, Duan Zhongxin was already dead.

However, when Chen Yan gently placed his hands on the edge of a wooden board and exerted a little force, the board actually moved slightly.

Hmm?

So loose?

Chen Yan carefully lifted the wooden board with his hands and shook it slightly, and the whole wooden cabinet moved with it.

"Captain Hu, Zhao Bing, give me a hand."

Seeing this, Hu Xueying and Zhao Bing immediately stepped forward, and together with Chen Yan, the three of them lifted the edge of a wooden cabinet and shook it continuously.

Click.

The entire cabinet fell off the wall and was taken down.

The bookcase was still intact and did not fall apart.

The wall behind also revealed its original appearance.

Like the surrounding area, it was also a red brick wall.

However, because it was blocked by the bookcase all year round, the color of the wall was slightly different from the surrounding area.

The color was much lighter, and the color of the red brick was brighter.

In addition, there were several holes on the wall.

These were the holes for inlaying the bookcase, a total of eight.

One in each corner of the four sides.

There were four in the middle.

Chen Yan stepped forward and looked carefully: "Zhao Bing, that flashlight over here!"

"Okay!"

After a while, the flashlight was handed to Chen Yan.

Staring at the holes, Chen Yan observed carefully.

The more he looked, the richer the expression on Chen Yan's face became.

His brows also furrowed more tightly.

After a while, after observing the holes, Chen Yan turned around to look at the bookcase that the three people had brought down.

The bookcase and the wall were mortised together with wooden sticks.

The mortise and tenon of the eight holes fixed the bookcase to the wall.

However, when Chen Yan and others just lifted the wooden cabinet, they basically didn't spend any effort.

Not to mention three people, as long as one person, not afraid of getting dust on his body, can get the wooden cabinet down.

Chen Yan originally thought that it was caused by the aging of the mortise and tenon that fixed the bookcase.

However, after observing the holes and the back of the bookcase.

Chen Yan found that the reason why the bookcase could be easily taken down was not because of the aging of the mortise and tenon.

First of all, the four holes on the four sides of the bookcase were empty, and the mortise and tenon above were all on the bookcase.

However, the mortise and tenon in the middle hole has broken, and it no longer has the function of fixing the bookcase.

Moreover, the break is relatively new, not the kind of break caused by decay, but it is broken by external force.

However, Chen Yan and others just didn't hear the sound of the mortise and tenon breaking, nor did they feel the force of the mortise and tenon breaking.

So, how did this break come about?

In a flash, all the information gathered in Chen Yan's mind.

Bookcase, break, hole, wooden door, bolt, wire...

Double secret room...

Murder...

Security...

Call for help...

All this...

Fuck!

This is all a trap!

The murderer used everyone to set up a trap!