When Tao Lu heard the type, he immediately became interested. Even though he knew that the backlog of murder cases would cost money, and asking Jiang Yuan and the others to do it would cost a lot of money, he was willing to spend the money, and he was happy to do so.
.
For any police station, solving the backlog of murder cases is like a mission. Solving each case adds another piece to the puzzle of the mission.
Jiang Yuan hesitated for a moment and did not talk about the case immediately. Instead, he took a vaccination first and said: "I'm not sure yet. I just had an impression when I checked the fingerprints. Although I won the match later, it was also a incomplete fingerprint.
, and it is not a decisive fingerprint, so it is still doubtful whether the case has been officially opened."
Jiang Yuan said, and then explained: "I may need a day or so to confirm. In addition, I may need to find relevant people in the case and interrogate the people involved. So let me tell you in advance."
Jiang Yuan said this in one breath, and not only Tao Lu, but also Song Tiancheng's expressions began to become particularly solemn.
This is Jiang Yuan. He didn’t even say so many words when deciding whether to take Duanda Group’s case. Looking at Duanda Group again, the stock price has now increased by 20%...
"Which case?" As Tao Lu asked, he had already begun to build a protective wall in his heart.
"Jianmenyuan Murder Case." After Jiang Yuan completed the psychological training for the two leaders, he honestly said the name of the case.
Interpols like to keep secrets in their hearts, but the secrets should not be too big, as they can lead to death.
Tao Lu and Song Tiancheng looked at each other, and immediately turned their gaze away. They each withdrew their eyes, unwilling to reveal their inner thoughts.
"Are you... sure about this?" Tao Lu felt that his mind was confused today. Earlier, Jiang Yuan was talking about Zhang Weili, but he couldn't remember who it was. Now Jiang Yuan was talking about the Jianmenyuan murder case, and he couldn't remember who it was.
I was so obsessed with remembering who it was that my language organization ability was paralyzed again.
The Jianmenyuan murder case was a homicide in the late 1990s. Jianmenyuan was the address, which was nothing unusual. The core was the identity of the nobleman who was the victim of the murder.
Jiang Yuan thought for a while and said: "I'm 90% sure that the fingerprint is correct. I can go back and study it more carefully. But..."
"If the fingerprint comparison is successful, the case may not be solved!" Tao Lu opened the window paper with just one sentence.
Jiang Yuan nodded: "Indeed."
Tao Lu frowned even more tightly than before.
Song Tiancheng's expression was not good-looking either.
How to solve a case that has been backlogged for more than 20 years?
In fact, after all, there is a fixed pattern, or in other words, fixed preconditions for the detection of old cases.
First of all, the first point is to make new discoveries. There are three most common new discoveries. One is the new technological revolution. For example, the development of DNA technology has solved many old rape cases and greatly reduced the number of rape cases.
incidence rate.
The second type is accidental income. The most common ones are those who pull out radishes and bring out the mud. Companions donated by various criminals for meritorious deeds, etc., all fall into this category. The fingerprints found by Jiang Yuan this time also fall into this category.
The third type is the investigation of family members or related persons. The rape and murder case of Nanjing Medical University reported on the Internet was found by former classmates through multiple comparisons. In addition, the advancement of the Tsinghua Zhu Ling case also relied on the victim’s university.
The efforts of the students.
But among the three prerequisites, the riskiest is accidental income.
Because what is occasionally obtained is often not conclusive evidence. Most of the time, what the police obtain are clues and they need to find ways to find evidence.
Especially this kind of case that has been backlogged for 20 or 30 years ago. There is no evidence and just someone's mouth. The risk to the suspect is too great and it will be a huge threat to the entire society.
If you could convict someone with just one open mouth, no one would have an enemy they hated all their life, and no one would be waiting for a chance to die.
It is very common for the general murder case backlog to be restarted when there are clues.
But the risk of homicide in Jianmenyuan is not that great.
Tao Lu couldn't help but said: "Jiang Yuan, if this is the case, I don't recommend restarting the project, at least, it can't be restarted directly."
Jiang Yuan was not surprised, he just raised his head and glanced at Song Tiancheng.
Song Tiancheng's expression did not change, as if he had not heard anything.
Tao Lu emphasized: "I know you are confident, but this is not just about solving the case. I will tell you a story and you will understand. You may not have thought that there was no key suspect in the Jianmenyuan murder case from beginning to end.
The criminal investigation team did not arrest any suspected suspects."
Jiang Yuan couldn't help but sit up straighter.
To be honest, it is possible that such a case could not be solved, but it is very abnormal that there is not even a key suspect.
Especially when there is no breakthrough in the case for a long time, it is more likely to happen that a large number of people are arrested and interrogated intensively or something else is done to obtain clues.
Jiang Yuan has often used similar plans. He arrested some relevant criminals and obtained clues through contacts between prisoners. Moreover, whenever he used this plan, he used it extensively.
"Weren't there any investigations into the Jianmenyuan murder case?" Jiang Yuan was quite surprised.
"There was a small-scale investigation, but not a large-scale investigation, and there were not enough clues at that time." Tao Lu said solemnly: "There were generally a lot of homicides back then. The victims'... family members,
We asked not to disturb the people, but we cannot start a massacre of the whole city because of this."
Jiang Yuan: "The key lies in what the police think. If the police need a large-scale investigation, can't they still do it?"
"Of course it can be done." Tao Lu said softly: "At that time, there was indeed no basis for a large-scale investigation, but for a case of this level, it was a strategy to obtain clues through investigation. But at that time, this strategy was dismissed
Denied."
"What were the opinions of the task force at that time?"
"I don't know the specific situation, but considering the conditions at the time, a large-scale investigation should not be of much help. But in any case, the task force has not exhausted all methods after all!"
Seeing that they were talking to this point, Song Tiancheng said again: "I agree with Tao Zhi's point of view. At that time, the victim's family was very restrained. Of course, the police also investigated as much as possible and invested a lot of resources.
However, we need to protect the emotions of the victim’s family, and we cannot rashly restart the project, as that will be a second harm to the victim’s family and is not conducive to our work.”
"I understand." Jiang Yuan really understood. It is understandable that this kind of case has been solved and nothing has been done. If it has not been solved and all means have not been exhausted, it can only be said that the victim's family really
Very restrained.
Under such circumstances, the police easily open the case. If the case cannot be solved or the case takes a long time, it will definitely be an unforgettable experience for the victim's family.
Considering the identity of the victim, if you hurt him, the probability that he will laugh it off is not high.
"Then let's do a round of preliminary investigation first?" Jiang Yuan himself was also preparing for a small-scale launch, and now it was just a procedural issue.
Tao Lu nodded immediately and said: "You can start with the interrogation first. Which suspect's fingerprints you have found, first bring him out alone. You can use the people on my side as you like."
"Just add them to my backlog of cases." Jiang Yuan said politely: "There must be a name. The people I take care of are not familiar with this part of the capital. It is always convenient for the local criminal police to take them.
.”
Tao Lu looked at Jiang Yuan deeply and said, "It's fine if I add it to you, but you can't take the person away."
"No, there's no one who doesn't stay at the Bureau and goes to the countryside."
"Of course I don't want to go to the countryside, but Ningtai is different." Tao Lu said, he was no longer entangled, and said: "You can recruit whoever you like. I will try Duanda's case slowly, and we will each be responsible for it."
