Chapter 972: Restraint

"A cold case of a homicide? Which case?"

When Tao Lu heard the type, he immediately became interested. Even though he knew that solving cold cases of homicides costs money, and inviting Jiang Yuan and the others to do it costs even more money, he was willing to spend this money, and was happy to do so.

For any police station, solving a cold case of a homicide is like a mission. Solving one is like adding a piece to the puzzle of the mission.

Jiang Yuan hesitated for a moment, not immediately stating the case, but first setting a preventive measure: "I'm not very sure yet. It's just that when I was looking at the fingerprints, I had a bit of an impression. Although it matched later, because it was also an incomplete fingerprint and not a decisive fingerprint, whether the case should be officially opened remains in doubt."

Jiang Yuan said, then explained: "I might need about a day or so to confirm it. Additionally, I might need to find the relevant people for the case and interrogate the people involved. So I'm saying it in advance."

Jiang Yuan said this in one breath, and as a result, not only Tao Lu but also Song Song Tiancheng's expression began to become exceptionally solemn.

This is Jiang Yuan coming; he didn't say so much when he decided whether to do the Danda Group case. Looking at Danda Group again, the stock price has risen by 20% now...

"Which case?" While Tao Lu asked, he had already begun to build a protective wall in his heart.

"The Jianmen Academy homicide case." After Jiang Yuan finished the psychological construction for the two leaders, he honestly stated the name of the case.

Criminal investigators like to hide secrets in their hearts, but the secrets cannot be too big, or they will die easily.

Tao Lu and Song Song Tiancheng looked at each other, their eyes touching and returning, each withdrawing, neither willing to reveal their inner thoughts.

"You... are you sure about this?" Tao Lu felt that his brain was messy today. Earlier, Jiang Yuan said Zhang Tang Weili, and he couldn't remember who it was; now Jiang Yuan said Jianmen Academy homicide case, and he remembered who it was too well, so his language organization ability was paralyzed again.

The Jianmen Academy homicide case was a homicide case from the end of the 90s. Jianmen Academy is the address, nothing strange; the core lies in the noble status of the victim.

Jiang Yuan thought for a while and said: "Fingerprints, I am 90% sure that it matched. I can study it carefully later. However..."

"Fingerprints matched, it doesn't mean the case can be solved!" Tao Lu poked this window paper with one sentence.

Jiang Yuan nodded: "Indeed."

Tao Lu's brows furrowed tighter than just now.

Song Song Tiancheng's expression was also not good.

How to solve a cold case of more than 20 years?

Actually, speaking of which, the solving of cold cases has a fixed mode, or rather, has fixed prerequisites.

First of all, there must be new discoveries. The most common new discoveries are of three types: one is the new technological revolution, such as the development of DNA technology, which solved many cold rape cases and greatly reduced the incidence of rape cases.

The second type is accidental gains, the most common being those that drag out the mud with the radish, various criminals donating their companions in order to perform meritorious service, etc., all belong to this category. The fingerprints Jiang Yuan discovered this time also belong to this category.

The third type is the investigation of family members or related persons. The online-spread Nanjing Medical University rape and murder case was found by former classmates comparing them in many ways. Additionally, the promotion of the Zhu Ling case at Tsinghua University also relied on the efforts of the victim's university classmates.

But among these three prerequisites, the one with the greatest risk is accidental gains.

Because accidental gains are often not decisive evidence; most of the time, the police get clues, and they need to find ways to find evidence.

Especially for these cold cases of twenty or thirty years, without evidence, just saying it with someone's mouth, the risk to the suspect is too great, and it will be a huge threat to the whole society.

If you can convict someone just by opening your mouth, who doesn't have an enemy they hate for life, and who can't wait for a dying opportunity.

It is very common for general homicide cold cases to restart if there are clues.

But the risk of the Jianmen Academy homicide case is not generally large.

Tao Lu couldn't help but say: "Jiang Yuan, if this is the case, I don't suggest restarting the special task force. At least, it cannot be restarted directly like this."

Jiang Yuan was not surprised, just looked up at Song Song Tiancheng.

Song Song Tiancheng's expression remained unchanged, as if he hadn't heard it.

Tao Lu emphasized: "I know you have confidence, but this is not just a matter of solving the case. I'll tell a story and you'll understand. You might not think of it, but in the Jianmen Academy homicide case, there was never a key suspect from beginning to end. The criminal investigation team didn't catch a single suspected suspect."

Jiang Yuan couldn't help but sit up straight.

Honestly, it is possible for such a case to remain unsolved, but it is very abnormal to not have a single key suspect.

Especially when there has been no breakthrough in the case for a long time, the situation that is more likely to appear in such a case is to catch a large group of people back, concentrate on interrogation or something, to obtain clues.

Jiang Yuan has used similar plans many times, obtaining clues by arresting some related criminals and then through the connections between criminals, and every time he uses this plan, he uses it very largely.

"Did the Jianmen Academy homicide case not do a screening?" Jiang Yuan was quite surprised.

"There was a small-scale screening, but no large-scale screening was done. There were not enough clues back then." Tao Lu said solemnly: "The homicide cases back then were generally relatively many. The victim's... family members suggested not to disturb the people, and not to make a big search of the city because of this."

Jiang Yuan: "The key is still what the police think, right? If the police have the need for a large screening, can't they do it?"

"That is naturally possible." Tao Lu said softly: "There was indeed no basis for a large screening back then, but for a case of this level, obtaining clues through screening is not a bad strategy. But back then, this strategy was rejected."

"What about the opinion of the special task force back then?"

"I don't know the specific situation, but given the conditions back then, the large screening should not have been very helpful, but no matter what, the special task force did not exhaust all methods!"

Song Song Tiancheng saw that they had talked to this point, and added: "I agree with Tao Zhi's point of view. Back then, the victim's family members were very restrained. Of course, the police also investigated as much as possible, and invested a lot of resources, but we need to maintain the emotions of the victim's family members. We cannot rashly restart the special task force. That would be a second injury to the victim's family members, and it is also not conducive to our work."

"I understand." Jiang Yuan really understands. It is understandable that such a case is said to be solved without doing anything. It is not solved, and it is not exhausting all means, which can only be said that the victim's family members are really very restrained.

In this case, if the police easily open the special task force, if it cannot be solved, or if the solving is protracted, it will definitely be an unforgettable experience for the victim's family members.

Considering the identity of the victim, if you hurt him, the probability of him laughing it off is not high.

"Then do a round of preliminary investigation first?" Jiang Yuan himself was also prepared to start on a small scale, and now it is just a procedural problem.

Tao Lu immediately nodded and said: "You can start from the interrogation. You found which suspect's fingerprint, and pull him out separately. You can use anyone on my side."

"Just add it to my cold case task force." Jiang Yuan said unceremoniously: "There must be a name. The people I brought are not familiar with Beijing, and it is always convenient to have local criminal police."

Tao Lu looked at Jiang Yuan deeply and said: "It's no problem to add it to you, but you can't take people away."

"No, who doesn't want to stay in the Zheng-Guang Bureau and go to the countryside."

"Naturally, they are not willing to go to the countryside, but Ningtai is different." Tao Lu said and didn't struggle anymore, saying: "You can add whoever you like, I will interrogate the Danda case slowly, and we will each be responsible for one piece!" ===== CHAPTER 973 =====