Solving the case: The opening scene solved a major shooting case, and the boss Ji Jie

Song An and Tian Rui piled the ropes directly on the desk.

Gu Ming looked puzzled,"Song An, what on earth are you talking about?"

Song An took out a few photos from his arms and explained:

"This is the photo I asked Tian Rui to take this morning. Look at this knot. It is not a knot that ordinary people can tie. Even the old fishermen who live near the river bank don’t have the ability to do it."

Song An's photo was passed around among Gu Ming, Guan Hongfeng, Zhou Xun and others.

Section Chief Li Jinglan took a look at the photo and said,"Indeed!

The knots on the hands and feet of the deceased were particularly difficult to untie.

It took Qin Ming from our forensic department nearly an hour to untie them with great effort.

" Tian Rui added,"Teacher Song and I went to Yanshan University and consulted a professor of folklore.

According to Professor Fang's explanation, this way of tying knots originated from a primitive tribe in South America.

It is said that when the local natives finish hunting, as long as they tie this kind of knot, the prey will have no chance to break free.

" After hearing this, everyone looked at each other.

No one would have thought that a small knot would have so many articles

"Then if you say so..."

Gu Ming looked at the pile of knots,"Could the murderer be a foreigner?"

A rare laugh broke out in the conference room. The meeting, which had been suppressed for an hour, became much more lively because of the appearance of Song An.

Song An shook his head,"Director Gu, Captain Guan, please look at these knots on the desk! There are a total of seven different knots in it. Tian Rui and I, based on the guidance of Professor Fang, have reconstructed the knots that the murderer tied seven times to commit crimes! Everyone, please take a look, are there any differences between these seven knots at the crime scene?"

Gu Ming looked for a few minutes without finding any clues, and called the people from the technical department and the forensic department to come and take a look.

The knots were labeled with the time when the murderer tied the knots.

Wang Xiaoguang, the head of the technical department, took a quick look and immediately understood!

"Director Gu, the murderer has committed seven crimes, and his knot-tying skills are getting better and better! These knots must be getting more and more difficult to untie!"

After Wang Xiaoguang finished speaking, Song An immediately applauded him!

Xiaoguang is an old detective after all

, and his eyes are indeed sharp. Tian Rui smiled and said,"Teacher Song and I tied the knots, and went to find several female police colleagues in logistics to test them. As a result, they spent half an hour and only untied two knots! The remaining knots could not be untied no matter what!"

Guan Hongfeng smiled,"Needless to say, the two knots they untied are the ones you restored. The knots left at the scene when the murderer committed the first two crimes!"

Song An nodded heavily.

Guan Hongfeng smiled at Song An with satisfaction,"It's great that we can find such an important clue in just one morning!"

Da Zeng was a little frustrated, touching his hair and said,"I provided the photos of these knots to Xiao Song. Why didn't I think of this level?"

""Wait a minute!"

Second Captain Zhou Hao raised his hand,"Aren't we analyzing the murderer's motive now? Why did he get into trouble with this pile of ropes? Knowing that the murderer is very good at tying knots, and is getting better and better, will it help us solve the case?"

Not only Zhou Hao, but also Zhou Xun, Tai Wei and other veteran detectives were confused.

In the entire conference room, only Guan Hongfeng and Lao Wang could really understand what Song An meant.

Song An said directly,"The murderer killed people in order to exercise his ability to kill."

???

Several captains had question marks in their minds.

What kind of statement is this? Who has ever heard of such a motive for a crime?

"I have two reasons. The first is the knot. The murderer's ability to tie knots is improving. In other words, the murderer's criminal ability is upgrading! The second reason is the age of the victim. Please take a look at the slides."

Song An came to the projector and started playing the victim's information.

"The first victim, Miao Feifei, was a female student who had just graduated from a technical secondary school, only 17 years old.

The second victim, nurse Wang Ailan, was 20 years old.

The third victim was 25 years old, the fourth victim was 27 years old, the fifth victim was 30 years old, and the sixth victim was 32 years old!

As for the female corpse found today, I analyzed the degree of wear on the victim's teeth and found that she was at least 35 years old!"

After hearing Song An's explanation, Zhou Hao was still confused.

"Officer Song, I admit that you have strong observation skills, but I still don’t understand. Just because the victims are getting older, do you dare to say that he is training his ability to kill?"

"At present, we have very few clues. According to the current situation, the six deceased had no intersection before their death, so we can rule out love killing or revenge killing."

Song An looked at everyone and continued to explain,"Think about it, there are many ways to kill people. Why did he knock people unconscious first, then tie their hands and feet, put them in black plastic bags, and finally throw the bodies into the river? Calculate how long it would take for the murderer to complete these actions, and many actions are unnecessary! Please note that the knots he tied are getting more and more complicated!"

Guan Hongfeng nodded,"This analysis is very correct. A real killer needs to end the crime as quickly as possible, not to make unnecessary things. But in our case of throwing corpses, the murderer seems to have a lot of extra actions and unnecessary work, which is really strange."

Wang Guijin interjected,"At present, according to the situation we have, Xiao Song's inference is very reasonable. The murderer is not afraid of tediousness or being discovered, just to exercise his ability to kill and make the final preparations for his real revenge in the future!"

Awesome!

He is worthy of being the old detective of Yanshan Police Station!

Song An silently applauded Lao Wang in his heart. Everything he wanted to say was expressed by Lao Wang!