Rebirth 2014: I, the King of Criminal Investigation

Chapter 442 I'll slap you, then I'll rub it for you.
On the rooftop?
Before the people inside could react, Yu Dazhang had already walked out of the house and arrived at the elevator.

This is a low-rise building, eleven stories high, with three units per floor, which is one of the most popular types of elevator apartments in Songhai in recent years.

Compared to those high-rise buildings that are often more than thirty stories high, such houses are more cost-effective.

After everyone arrived at the rooftop, Yu Dazhang looked around and saw the high-level water tank not far away.

This is considered standard equipment in high-rise residential buildings, mainly used for rapid water supply in the early stages of a fire.

It is also an alternative solution for domestic water supply.

It can replenish the water source in a timely manner when the water pressure is insufficient or the water supply is interrupted.

"In that water tank."

Yu Dazhang pointed to the water tank, which was over two meters tall, and said confidently:
"The clothes the murderer wore and the murder weapon he used are all in there."

Even Lü Zhongxin couldn't stand it anymore.

We all came up together, how could you tell at a glance that the murder weapon was in the water tank?
Are you trying to tell fortunes here?

Or can your eyes see through things?

Can't you even be logical?

Even he now thinks Yu Dazhang is just messing around.

“We inspected that water tank before.”

A member of the task force said:
"We also had police dogs sniff it out. If there is blood in the water tank, the police dogs will definitely be able to smell it."

If it were that simple, you would have solved the case long ago... Yu Dazhang only dared to think this to himself.

One should be more tactful in dealing with people.

"How did you conduct the initial inspection?" Yu Dazhang asked.

"Well..." the task force member hesitated, looking a little guilty, and stammered in response:
"I checked the bottom of the water tank with a flashlight, especially the water outlet, and didn't find any foreign objects."

Actually, his line of thinking wasn't wrong.

If there are foreign objects in the water tank, a certain amount of suction will be generated at the water outlet when the residents in the building use the water.

Due to this suction, foreign objects will be attracted to the water outlet, causing blockage.

Moreover, metal objects cannot float in water; they will definitely sink to the bottom.

Therefore, when inspecting the water tank, you only need to focus on the bottom.

With the assistance of police dogs, it can be basically confirmed that there are no foreign objects in the water tank.

But this time it's different.

The vast majority of people present were experienced veteran criminal investigators.

They immediately realized there was something wrong with what they were hearing.

"You only checked the bottom of the water tank?" the task force leader asked the officer.

Didn't you check around the water tank?

“No,” the officer shook his head and explained.

"The water level in the tank was too high at the time, so I couldn't reach inside to check. I only checked the bottom."

After saying that, he felt it was inappropriate and immediately added:
"Actually, there's no need to check everything. Even if the bloodstains on the murder weapon have been cleaned up, metal is denser than water, so it will definitely sink in water."

"He's really stubborn..." Yu Dazhang looked at the police officer with some helplessness.

It's clearly a matter of carelessness in the work, yet they're trying to cover it up with this kind of excuse.

"What if the murder weapon was placed in a styrofoam box?"

Yu Dazhang's assumption stunned the police officer.

The others also looked at Yu Dazhang with incredulous eyes.

That's a brilliant move!
If that's the case, the murder weapon will remain floating on the water.

Before anyone could react, Yu Dazhang proposed another hypothesis:
"Put the bloodstained clothes in a styrofoam box, then seal it with plastic wrap. Wouldn't that prevent them from sinking to the bottom and also block out the smell?"

Upon hearing this, the members of the task force looked at Yu Dazhang with a strange expression.

You and the murderer are accomplices, aren't you?

Is this information that can be inferred?
Or rather, what did you base your conclusion on?

If you're just imagining things out of thin air, your imagination is truly terrifying.

But...

This method can indeed help you get away with it.

"wrong!"

The officer suddenly retorted, "If it were really as you say, that styrofoam box was floating on the water, then I would have been able to see it during my inspection, unless the styrofoam box was stuck to the side of the water tank."

I really don't want to hurt you... Yu Dazhang sighed, and then proposed another hypothesis:
"If we put a magnet in the styrofoam box, will it stay stuck to the side of the water tank?"

"You!" The officer wanted to continue arguing, but when the words reached his lips, he found he had nothing to say.

If you raise any questions, the fat man will immediately provide an explanation.

Just like he can see what's inside the water tank.

"Does anyone else have any questions?"

Seeing that the police officer had stopped speaking, Yu Dazhang turned his attention to the others:

"If you have any questions, ask them now. If there are no problems, then open the box and check."

He went upstairs intending to open the water tank and retrieve the murder weapon.

But in order to make the performance more realistic, he had to spend some time dealing with the task force.

Since they want logic, then explain it to them, lest these people spread the story in the future.

"I'll go."

The speaker was the head of the task force, who had decided to personally inspect the site this time.

Since the fat man was speaking so convincingly, he decided to check if there were any styrofoam boxes inside the water tank.

five minutes later.

Under the watchful eyes of everyone, the head of the task force took out a foam box tightly wrapped in cling film from the water tank.

After carrying it out, he then, in front of everyone, stuck the foam box onto the metal sheet outside the water tank.

The white foam box somehow stuck to the water tank.

This suggests that it must contain a strongly magnetic metal such as a magnet.

Foam boxes, plastic wrap, magnets...

Yu Dazhang was right about everything!

Everyone present was speechless.

Faced with absolute strength, any questioning is nothing but self-humiliation!

The police officer who had argued with Yu Dazhang earlier was now flushed, his head bowed so low he didn't dare look at Yu Dazhang even once.

I'm ashamed... Yu Dazhang is the most guilty person here.

"Your line of thinking is correct."

He walked over to the officer and patted him on the shoulder:

“If it were me, I would have done the same thing when I checked the water tank, so you don’t need to blame yourself.”

"The reason I was able to think of these things later is based on the results of your investigation."

While he may seem to be comforting people, he is actually emphasizing that he is just an ordinary person.

However, everyone looked at him as if he were a monster.

It's as if they're saying: Don't bother explaining, we don't believe you.

"Let's open the box," Yu Dazhang said to the head of the task force.

At some point, he had become the leader of everyone present.

In other words, people have unknowingly become accustomed to following his arrangements.

As the styrofoam box was opened, a blood-stained garment appeared before everyone's eyes, with a small hammer placed in the very center of the garment.

"Okay, don't move for now."

Yu Dazhang reminded him:

"Wait for the technical staff to come and collect your fingerprints."

As he spoke, he quickly walked to the edge of the building.

Just then, Qian Cheng came up from below.

He had a big smile on his face, clearly in a good mood. He nimbly jumped down from the basket and then eagerly said to Da Zhang:
"The footprints have been collected, and they are very complete."

"You've come at the perfect time." Yu Dazhang pulled him to the water tank and pointed to the styrofoam boxes on the ground, saying:

"Let's see if we can extract fingerprints from these physical evidence."

Qian Cheng glanced at the clothes and small hammer in the styrofoam box, then looked up at Yu Dazhang:
"You found this too? Do you have X-ray vision?!"

(End of this chapter)