Rebirth 2014: I, the King of Criminal Investigation

Chapter 180: As long as you do something, there will be traces left
Yu Dazhang knew this information without him saying it.

There is a detailed record of this time in the case files.

The video conference at that time was also preserved as audio-visual evidence.

The exact time was the twelfth minute into the video conference.

Liu Zhengyang first showed symptoms of loss of consciousness, then gradually slipped from the chair and fell to the ground.

The whole process takes less than a minute.

"Did he take medicine before the meeting that day?" Yu Dazhang continued to ask.

This problem was missed by the police officers who handled the case before.

Since the forensic diagnosis was that of natural death, the police officers involved in the case at the time ruled out the possibility of drug poisoning.

This is the mistake of preconceived ideas.

"I have eaten it." The butler answered straightforwardly:
"I remember it very clearly. I brought hot water to Mr. Wang and watched him take the medicine."

"Do you remember what happened a few minutes before the meeting?" Yu Dazhang asked.

The butler seemed to have not expected him to ask such detailed questions. He thought for a while before answering:

"I can't remember exactly, probably about ten minutes."

The timing is very clever... Yu Dazhang calculated it in his mind.

I got sick ten minutes before the meeting and twelve minutes after the meeting.

In other words, Liu Zhengyang had the heart attack more than 20 minutes after taking the medicine.

"You said that you saw Liu Zhengyang take the medicine?" Yu Dazhang repeated what the butler had asked.

"Yes." The butler answered affirmatively.

Yu Dazhang's brain was working rapidly. After thinking about all possible unexpected situations, he asked:
"Was the amount of medication he took different than usual?"

"Nothing is different, it's the same as usual." The butler answered confidently:
"I personally fetch medicine and water every day. I remember exactly how many pills of each medicine to take, so I will never make a mistake."

The reason why Yu Dazhang kept asking questions about the medicine was because this was the only way he could think of to murder Liu Zhengyang.

The only way to cause Liu Zhengyang's heart attack and death without anyone noticing was to tamper with the medicine he was taking.

The only ones who can do this must be the people around you.

Outsiders can't even enter their home.

But the current situation is: the medicine is correct, and the amount taken is also correct.

The case file clearly records that after the incident, the police officers in charge of the case took the two medicines that Liu Zhengyang usually took back for testing.

The final result showed: there was no problem with the medicine.

This was also one of the reasons why the police officers at the time ruled out drug poisoning.

These were the two medicines Liu Zhengyang took before he fell ill.

"That's it for now. I'll contact you if I have any questions."

Yu Dazhang's mind is a bit confused now:
"If you think of anything new, you can contact me. My phone is on 24 hours a day."

He urgently needs to be alone to sort out the information he just received.

After ending the call, Yu Dazhang quickly fell into deep thought.

The direction of the investigation is correct. The other party must have taken action before the video conference started.

And there must have been some sort of treatment of the drug.

The drug was tested and found to be fine, the amount taken was correct, and I didn't take the wrong drug...

So how did the other party cause Liu Zhengyang to have a heart attack?

Yu Dazhang thought about all the possibilities, but still couldn't figure out how the other party did it.

When he was in the police academy, he was quite unconvinced when his teacher said that criminals had high IQs, believing that no criminal could escape legal sanctions based on his IQ.

Now he believes it.

There are people who can really do things perfectly.

No.

It’s because I didn’t check carefully enough... Yu Dazhang secretly encouraged himself.

There must be something I didn't expect.

Since the other party is very meticulous, then you must pay attention to every detail. No details can be missed!
"As long as you do something, there will definitely be traces left."

Yu Dazhang was recalling the conversation he had just had with the housekeeper, but he was muttering to himself:

"Your IQ can make traces disappear, but some traces should never disappear."

"for example……"

I understand... Yu Dazhang's eyes lit up, and he immediately went to the gate of the detachment and called out Ma Jian and the others.

"Go to the evidence room. There are two bottles of medicine sealed in Liu Zhengyang's sudden death case. Go get them. The evidence numbers are recorded in the case file. Come to the technical department to find me after you get them."

"it is good."

After the two men agreed, one went to the evidence room and the other went to check the case files.

Yu Dazhang took out his phone and called Qian Cheng:
"Brother Qian, are you in the technical department?"

"Yes." When Qian Cheng heard that it was Yu Dazhang, he raised his voice unconsciously:

"Is there another case?"

"You still understand me." Yu Dazhang said with a smile:

"I'm going to need your help again this time. I'm going to go to the technical department to check my fingerprints later."

For matters like physical evidence inspection and fingerprint matching, the technical department will not give you an immediate response.

It usually takes one to two business days to get the results.

During this period, the corresponding procedures must be followed and a written report must be prepared.

But it’s different if you have acquaintances in the department.

If you skip those procedures and do not require a written test report, the results can be obtained immediately.

Especially for fingerprint detection, it can be completed in just a few minutes.

"Why are you so polite to me?"

Qian Cheng and Yu Dazhang have a close relationship, so they talk more casually:

"Come on, I'll wait for you."

I, Yu Dazhang, also have connections... When he thought about the people he knew in the technical department, he felt more confident.

There is a great emphasis on interpersonal relationships within the system.

If a person has good interpersonal relationships and wide social connections, not to mention other things, his work efficiency will be greatly improved.

You know, the time it takes to go through procedures in some departments within the system can drive people crazy.

Come to the technical department.

As soon as Qian Cheng saw Yu Dazhang, he immediately asked:

"What case?"

It is worth mentioning that he also won the third-class individual merit at this commendation meeting.

In the case of the Grade 3A hospital, Qian Cheng was arranged by Yu Dazhang into the arrest team, so when the credit was reported, he was also among them.

As long as the technical department can persevere, it is not difficult to gain collective credit.

But if you want to gain personal credit, it is extremely difficult.

Why?

There is no chance.

Investigating the scene and assisting in solving the case are all tasks performed by the department, and there is basically no opportunity for individuals to show their abilities.

Even Qian Cheng didn't expect that he would be able to go on stage to receive the honor this time.

Everything happened too suddenly, and he somehow became the most popular kid in the technical department.

"It's a backlog case in our branch." Yu Dazhang replied.

There was nothing to hide between him and Qian Cheng, and there was nothing to keep secret in this case at the moment.

"You are becoming more and more courageous now."

When Qian Cheng heard that it was an unsolved case, he couldn't help but show a worried look on his face:
"You dare to touch the backlog of cases. I think you are really arrogant."

(End of this chapter)