The little catcher in the police station

"Correct!"

"Oh."

Bai Xiu faintly felt that she knew what Jiang Hao was going to do, so she didn't ask any more, but went directly to the technical department to ask for what she needed.

After a while, Bai Xiu took back a USB flash drive, on which she copied Du Fang's call records in the past three months.

"This Du Fang is also very good at making calls. He made nearly 22 calls in three months, and an average of [-] calls a day. Fortunately, what you want is data. If you print it out, how much paper will be wasted."

After complaining, Bai Xiu said, "You mean, the murderer is hiding in these phone numbers?"

"I have made progress. It seems that I have spent so many days with me." Jiang Hao glanced at Bai Xiu approvingly, and continued:

"What Team Wang said just now is not bad, the murderer is very likely to be a decoration, property or maintenance worker, and these low-level jobs in society fit the portrait of the murderer you profiled earlier.

According to the previous clues, although the murderer and the victim are not very familiar, they should know each other. Judging from his ability to grasp the victim's movements every time, he should have followed and observed the victim for a period of time , so I guess, there should be a telephone connection between them! "

"I see!"

After listening to Jiang Hao's analysis, Bai Xiu suddenly realized, and her thinking became clear instantly.

However, when she thought of so many calls, she felt a little apprehensive in her heart: "With so many numbers, when will we have to get in touch?"

"Do you know why you are only asked to copy the data?"

"Oh, I see, you want to do data analysis?"

Seeing Jiang Hao nodded, Bai Xiu became even more excited: "You know how to analyze data? It's too good. I asked my senior brother to help me with the data analysis required for the thesis I wrote before. "

Hearing what she said, Jiang Hao was at a loss:

Why are you telling me this?

Do you want to ask me to help you write the data analysis of the paper?

Think beautiful!

In order to study the genes of corpse worms, he taught himself various formulas for data analysis during this time.

Compared with this, analyze the phone number, it is really handy.

Jiang Hao didn't say anything, took the USB flash drive in Bai Xiu's hand, found a computer in the office, and started importing data.

As the saying goes: If a worker wants to do a good job, he must first sharpen his tools.

Jiang Hao is going to analyze the data of this address book first.

Eliminate irrelevant contact numbers and find out useful information.

Classify according to the number of calls, call time, and call duration, find out the suspicious numbers, and then Bai Xiu will reverse the identity information of the phone owner based on these numbers.

Eliminate irrelevant numbers such as gender and age.

In the end, after Jiang Hao's dizzying operations and thousands of communication records, there were only 21 phone numbers left.

"Team Leader Jiang, you know too much!"

At this time, Bai Xiu really admired Jiang Hao. After spending only a few days together, she found that she couldn't see through Jiang Hao's psychology.

Contact every day, but every day has a sense of freshness.

"If you don't learn more, how can you catch bad guys? You know, criminals sometimes study harder than us. If we don't think about making progress, won't the social order be chaotic?"

When Bai Xiu heard it, it was indeed such a reasoning!

"Then I'll contact them and screen their occupations!"

Thousands of communication records make people feel at a loss, but with 21 phone numbers, it is very simple to connect them again. Knowing that they ask about their occupations, they can screen out a group of people.

Seeing that Bai Xiu picked up the phone and was about to make a call, Jiang Hao stopped him immediately:

"Wait a minute, don't startle the snakes. If you startle them, it won't be good if you destroy the evidence of the crime."

"Ah? What should I do then?"

"On-the-spot visits, we can find out the addresses of these people based on their household registration information, compare the radius of the murderer's crime, and screen out a group of people!"

"Yes, yes, this method is good!"

Bai Xiu nodded quickly, thinking that what she did just now was indeed a little reckless, and it almost caused a mistake.

On the other hand, Jiang Hao's method of saving the country with curves is really rich in actual combat experience!

After seeing Jiang Hao's various methods and ideas to solve the case, Bai Xiu knew that he had learned a lot, and now it was time to prove whether his method was effective or not.

Therefore, Bai Xiu was very motivated, and without Jiang Hao's instructions, she personally found out the household registration information of these 21 people.

Jiang Hao didn't say that he was watching, and let her do it alone. After all, 21 people said that it was not too much, but they said that it was not too much.

It would be a waste of time for her to come alone.

Time is precious now, and saving a little is a little bit.

Afterwards, Jiang Hao took out the map drawn that day, and marked all the home addresses of these 21 people on the map.

Then find out who's address is within the radius of the crime.

It doesn't mean that the police's deduction is necessarily correct, nor does it mean that the murderer must be within this radius, it just means that they screen based on their own judgment, so that it is convenient to start the investigation first.

Chapter 788 Huh?No, Team Leader Jiang!

It doesn't mean that the police's deduction is necessarily correct, nor does it mean that the murderer must be within this radius, it just means that they screen based on their own judgment, so that it is convenient to start the investigation first.

If it is finally found out that there are no suspects in the radius of the crime, it doesn't matter.

Then start from outside the circle, and check from near to far!

This is the most scientific and one of the fastest methods of investigation.

really,

After Jiang Hao made such a move, the range of 21 people suddenly shrank by 90.00%.

In the circle, there is only one place left!

Will it?

The murderer is him?

Bai Xiu enjoys the process of solving the case very much. The process of drawing conclusions after reasonable speculation based on clues one by one is really fascinating.

She enjoyed this process very much at this time, and even couldn't wait to reveal the final truth.

And this is why she wants to come to the front line to solve the case.

"Go, let's go!"

As soon as the USB flash drive was pulled out, Bai Xiu burst into high spirits.

Jiang Hao went to get his car and was ready to set off.

This time he was able to use this tricky method, thanks to the presence of Bai Xiu.

Through her psychological profiling, she provided very complete parameters for her own data analysis. From this point of view, psychological profiling does have its own unique features.

After data screening, the last remaining person is named Liu Yaqiang, 45 years old this year. Looking at the photo on the household registration, he has thick eyebrows and big eyes, good facial features, and looks a little handsome.

From the looks of it, he doesn't look like a murderer.

At this moment, Jiang Hao and the others were on their way to his house.

"Group leader Jiang, I don't know why, but my sixth sense strongly tells me that the murderer is him!"

In the car, Bai Xiu was a little excited. After all, this was the first case she participated in solving.

The first feeling is always so good!

The Hongqi HS5 slowly drove into the alley, and Bai Xiu found that the alley ahead was too narrow, so she asked Jiang Hao, "We can't get through the front, shall we get off here?"

"Okay, get out of the car!"

After locking the car, Jiang Hao led Bai Xiu through an alley.

This area is the old city, and here is a village in the city.

Liu Yaqiang's home is at the end of this alley.

When he came to the door of his house, the door was locked and there was no one in the house.

About 50 meters away from the door of his house, there is an old man who is sitting on the Taishi chair, smoking dry tobacco and basking in the sun.

"Go, ask."

The purpose of their trip is to get to know Liu Yaqiang.

So, Jiang Hao took the lead and walked over there, next to the uncle who was smoking a cigarette leisurely and contentedly: "Come on, uncle, smoke one of mine!"

Jiang Hao himself doesn't smoke, but he always has a good pack of cigarettes on his body, just to use it to win relationships at critical times.

This pack of cigarettes, as long as it is a smoker, definitely knows the goods.

But he didn't expect that at the uncle's place, he stopped.

"Don't smoke, your cigarettes are not as strong as mine!"

After speaking, he squinted his eyes and took another sip.

The look of enjoyment is the same as that of the drug addicts Jiang Hao used to run.

Your uncle, always your uncle.

Jiang Hao put away his cigarette after being shut down, and said again: "Master, I'm asking you for someone, do you know Liu Yaqiang?"

"Yes, you also came to him for decoration?"

Hearing Jiang Hao mention this name, the uncle opened his eyes and looked at them suspiciously.

Bai Xiu just wanted to deny it, but he heard Jiang Hao say: "Yes, yes, we asked him to renovate. Isn't this a new house just bought, and we are going to make it simple!"

The uncle nodded, then glanced at Bai Xiu behind Jiang Hao, and said, "You are lucky, young man, this girl looks good."

One word from the uncle made Bai Xiu feel ashamed, but she also knew that she was on a mission at this time, so she didn't have to take it seriously when she was joking.

"Thank you, sir, for your compliment. Aren't we planning to ask him for renovations? We asked him to come over today, but I didn't expect him to be away. By the way, how is his craftsmanship? What about his reputation?"

Jiang Hao started chatting with the uncle as if he had bought a new house and was about to find someone to renovate it.

Take the opportunity to obtain some information about Liu Yaqiang.

"Yaqiang is a hard-working boy, so you can take care of his business, not to mention other things, this handicraft alone is really good."

do not!

Why don't you say anything else?

He brought Bai Xiu here because he wanted to hear other things.

Now the uncle actually said nothing else, so how can it be done!

So Jiang Hao could only take the initiative to insert the words again:

"Oh? Why is his life so miserable? As long as he has a good skill, his life should be prosperous."

Gradually, the topic was brought by Jiang Hao from crafts to life.

Maybe it's a common problem among older people. When the uncle saw that Jiang Hao also had a heart for gossip, he immediately seemed to have opened up a chatterbox.

He first looked around and saw that there was no one around, so he moved closer to Jiang Hao and said in a low voice, "Don't spread the word about it, after all, it's someone's private matter, let alone me!"

Jiang Hao and Bai Xiu quickly assured that they and others would never spread the word, and then the uncle whispered: "He is not good at that, he has never had children, and even his wife ran away with others a few years ago, shhh, don't you Say I told you!"

"This?"

Jiang Hao pretended to be shocked, but in fact he exchanged a glance with Bai Xiu. This information was highly consistent with the characteristics mentioned in Bai Xiu's previous psychological profile.

It seems that the murderer is likely to be this Liu Yaqiang.

Now, it is necessary to find the evidence of his crime.

"Just keep it in your heart, but don't say I said it."

After the uncle finished telling the secret, he was relieved!

It doesn't look like it's going to be kept secret at all, but rather enjoys the joy of spreading secrets.

Jiang Hao is sure that this secret should be known to everyone in the village.