The two walked side by side, Lu Chuan's brows were furrowed tightly, and from time to time he looked back at the Qingsong Physical Examination Center, which was getting farther and farther away, which had been hidden in the cold wind.

After walking out for about a few dozen meters, Lu Chuan stopped.

"Master, something is wrong, this woman...... I still don't feel right. ”

This time, Liu Guodong looked at Lu Chuan with some seriousness.

As a criminal policeman, intuition has never been the criterion for handling cases, let alone the basis for conviction.

However, the intuition of the criminal police is different from that of ordinary people, and they who have been dealing with various criminals all year round seem to have a kind of vigilance accumulated by experience in crime.

Although Lu Chuan has not been in the police for a long time, he has been engaged in on-site investigation and trace inspection work for a long time, and has little experience in the front line, but he has been in contact with many cases.

In the past six months, the murder detection rate of the criminal investigation detachment has been 100 percent, and Lu Chuan has made great contributions.

It makes sense to have this kind of intuition, or experience.

Not to mention......

Liu Guodong, Lu Chuan and Zhang Hui had already made an appointment, and as soon as the investigation of the two people here was over, they would call Zhang Hui.

But the two of them came out of the Qingsong Physical Examination Center for more than ten minutes, and they didn't take the initiative to call Zhang Hui.

Lu Chuan felt that there was something wrong with this woman, and Liu Guodong muttered a little in his heart.

However, the two of them had just questioned Wang Manli more thoroughly.

Wang Manli did not show any abnormalities in the process of her own conversation

The contact with Goldman Sachs is evidenced by WeChat chat records, and the fingerprints on the electric car are also proved by surveillance video.

perfectly cleared Wang Manli's suspicion in the Goldman Sachs disappearance case.

It's like...... The answer has been prepared in advance for the arrival of Liu Guodong and Lu Chuan.

"Xiao Lu, can you tell me why?"

Lu Chuan's brows furrowed even deeper: "I took leave to attend my cousin's engagement banquet last night, and I saw this woman in the parking garage of Haizhou International Hotel. ”

"Have you seen her?"

Liu Guodong was slightly surprised: "She didn't recognize you just now?" ”

"It's just that there was a meeting in the elevator, and she shouldn't remember." Lu Chuan shook his head: "At that time, I felt that this woman was a little familiar, and I always felt that I had seen it somewhere." ”

"Today...... The feeling is even stronger. ”

"Check it out?"

Lu Chuan nodded: "Well, check it out, yesterday this Wang Manli drove a silver-gray BMW sedan." ”

"A nurse at a medical examination center, so rich?"

"Also, she went to the seventh floor of Haizhou International Hotel yesterday, which was the housekeeping department."

"The time for my engagement banquet was more than two hours, and when I drove back to the underground garage, I noticed that Wang Manli's car had already driven away."

The meaning in Lu Chuan's words is very clear.

Since Wang Manli is working in Haizhou, it is unlikely that she will stay in a hotel at night.

Even if you stay in a hotel, you won't stay for two hours.

So, what did she do at Haizhou International Hotel yesterday?

Liu Guodong nodded: "I asked my friends over there to help check the assets of this Wang Manli, as well as the bank statement." ”

Checking the details of the economy is much more professional and convenient than the criminal investigation.

Of course, it's not that the criminal investigation side can't investigate, but there are more procedures to follow.

For example, you can open an official letter to the bank to inquire about the specific information of the depositor.

However, because of the particularity of the nature of the work, the economic investigation side has super authority.

The economic situation of the average person is transparent to them.

As for whether there is anyone to help, that's even more trivial.

Lu Chuan's fingerprint identification for them last time helped them a lot.

400,000 instruments have been bought, and this little thing is naturally not a problem.

Since the two of them have decided to check on this Wang Manli, there is no need for the cold wind to blow.

called Zhang Hui, who was still busy over there, and Lu Chuan directly paid for a taxi back to the criminal investigation detachment.

Yang Sen and Lao Bai haven't come back yet, and Liu Guodong has contacted a friend from the economic investigation.

But Lu Chuan has nothing to do now.

In the building of the criminal investigation detachment, it is rare to be a little deserted, and many internal staff have been dragged to the scene, and there are only two or three big cats and kittens left in the building.

Lu Chuan, who had nothing to do, began to scan his fingerprints.

During this time, because all the energy on the current investigation side was devoted to the case of Song Kun's murder, some normal work was delayed.

A lot of work has been piled up, and there are more than a dozen cases that require fingerprint identification and analysis alone.

Taking advantage of this gap, Lu Chuan happened to clean up some of the work at hand.

In the past week, there have been a total of 12 cases of fingerprint identification and analysis.

There were four robberies, three thefts, and some previous backlogs, and recently new discoveries, as well as fingerprints to compare.

Lu Chuan, who has mastered the skills of intermediate fingerprint identification and analysis, can be described as handy most of the time when dealing with these relatively simple cases recently.

Although the quality of the fingerprints collected by the police station and the criminal police brigade below is average, they can basically be successfully matched after Lu Chuan's pretreatment.

The rare fingerprints that do not match are also because there is a high probability that there is no fingerprint of the target person in the fingerprint database.

It is difficult for a good woman to cook without rice, this is something that the gods can't do when they come.

At present, there is no particularly fixed, systematic and unified procedure for fingerprint identification and analysis.

In the early days, ministries and commissions and major provincial departments set up corresponding fingerprint identification institutions in order to give full play to the role of fingerprint identification in solving cases.

And standardize and unify the classification of ten fingerprints, which is the basis of all fingerprint identification and analysis.

However, in the investigation of specific cases, the disadvantages of too simple and rough classification of ten fingerprints gradually emerged.

On this basis, various localities have developed technology, integrated classification, and formed some unique fingerprint analysis methods.

Up to now, fingerprint identification analysis can be roughly divided into two categories: single-finger fingerprint analysis and multi-finger fingerprint analysis.

Among them, single-finger fingerprint analysis is the most widely used.

Among all the single-finger fingerprint analysis, the Qingdao single-finger fingerprint analysis method and the CQ single-finger fingerprint analysis method are the most famous.

It is also a template analysis method for teaching skills in college.

Both methods have their own advantages and disadvantages.

Among them, the Qingdao-style single fingerprint analysis method divides the two basic types of fingerprint buckets into 28 categories and 68 subcategories.

The analysis is carried out with the help of a specially prescribed "analysis gauge".

The so-called "analytical gauge" is engraved with a circle with a diameter of five millimeters, which is called an analytical circle, and the angle between two straight lines intersecting at 80 degrees is called a gauge angle line.

The fingerprint is delineated with the "analysis gauge", the feature points are labeled, and then the data is calculated and analyzed.

In the Chongqing-style single-finger fingerprint analysis method, fingerprints are divided into 3 categories: bow, kei, and bucket, and 24 sub-categories, and the analysis is reflected by pictograms.

For example, in the analysis of bucket patterns, this kind of fingerprint is composed of rings, snails, curved lines and other lines, and is divided into 11 categories according to the structure and form of the central lines.

A central ring with a diameter of no more than 4 mm is called a circular ring, which is denoted by the symbol "0".

A central ring with a diameter of more than 4 mm is called a long ring and is represented by the symbol "(1)".

The center has one or more spiral lines that rotate in a clockwise direction, and the diameter of the two ends does not exceed 4 mm, which is called a circular spiral, which is represented by the symbol "9".

Lu Chuan's intermediate fingerprint identification and analysis skills are the culmination of these two single-finger fingerprint analysis methods.

Therefore, for the fingerprint identification requests reported by the grassroots police station and the criminal police brigade, most of them are not a problem in Luchuan.

Except for a few cases, the clarity of the fingerprint itself is too rubbish, and it looks like a mess of paste, Lu Chuan has to spend a lot of time and great energy to get it, and the other fingerprint comparisons can be done in ten minutes as fast as possible, and about half an hour as slow.

Towards the end of the evening, when Yang Sen and Lao Bai came back, Lu Chuan was already comparing the last set of fingerprints.

And Liu Guodong rushed back from the economic investigation, and the investigation of Wang Manli also had results.