The sky was clear, there was not a single cloud in the sky, and the sun baked the ground hot; A southerly wind blew, and a wave of heat rolled up from the ground, and the fire burned so that people felt suffocated.

Qin Gang quietly lit a cigarette under a tree in the courtyard of the bureau, the sun shined on the ground through the dense layers of leaves of the big tree, and he didn't go to Shao Guoqing, nor did he want to go upstairs into the office, he felt that he needed to pick it up again.

There is not the slightest trace at the scene of the crime, and there are only five samples of biological traces that can really be extracted from the various items collected in the grove, which have nothing to do with Lao Qiu and the three of them, and they cannot match any information in the library.

Therefore, there is no suspect who can really be locked, at most it is suspicious, and it is a direction that is inferred.

A conversation with Guan Xiaoqi made him feel that if it spread, maybe more people would be on this chain of reasoning, even if the direction is correct, filtering and screening will bring a lot of work and all kinds of uncertain mistakes, he wants to narrow this range, and can really lock down the suspect, this should be a top priority.

When Li Yi appeared, Qin Gang had already stepped on several cigarette butts, and in his surprised eyes, the two of them turned around and walked into the office building together.

"Is the smoke good to smoke, do you want to taste it or do you want to be a part of your life." Li Yi said.

"Wait for you, by the way, think about the problem."

"You're pacing around here, a bit like a criminal preparing to turn himself in."

"With a righteous face, no matter how you look at it, you are a person with a halo on your head."

"The one with the halo on his head is the Buddha."

Qin Gang smiled and said, "I'm not so high-light, let's wait until I retire and then practice." Qin Gang opened the mirror on his phone and looked at it, "We need a brainstorm, and a person appears in our field of vision again." ”

When the two of them passed by the door of Team Liu's office, Li Yi glanced at it and smiled at Qin Gang, "Not here." ”

Preparing the whiteboard with pen and paper, Qin Gang began to write his thoughts.

1: The evidence collection of the case from a positive perspective cannot lock the suspect or the murderer, and can only be reasoned from the reverse angle.

Second: the reverse setting is based on the three points and one line of the sports school, the forest and the community, and the current goal of the sports school is to monitor.

Three: ABC appeared in the sequence of the scene, the victim did not have a complex social background, there was no dispute with his neighbors, the crime was ruled out, and the murder was preliminarily inferred.

Four: The victim's death should have been an accident, and A was unable to handle the scene, so C appeared and B was a passer-by at the scene.

Five: C is the key to the breakthrough, and the trajectory of his entry and departure is the clue we track.

Six: From the processing and reasoning of the scene, it is concluded that he needs to use the tortuous path of physical education to enter and exit, because it is convenient to hide his whereabouts.

Seven: To use this path requires a premise, that is, to be familiar with the monitoring distribution of the sports school and know the specifications and parameters of the camera, so that you can design a perfect route to avoid monitoring, which can be foolproof.

Eight: Lao Qiu, Shao Guoqing, and Bian Wei appeared here, and two of them had contact with the victim in the past, and were familiar with the internal environment of the sports school, and may also be familiar with the surrounding environment, and of course, there was also the confusing element of blending wine.

Nine: Shao Guoqing may have handled the data of the sports school monitoring project plan, and he may know the specifications and parameters of the camera, which is his vision of the case again.

Ten: The sports school monitoring project is known to have gone through two packages, and it is uncertain whether there are three packages, and there should be no three packages from the analysis of the subject amount.

"At present, the evidence we have in our hands is not enough to support us to detain and summon anyone, let alone conduct a public collection of evidence on anyone, so my idea is to narrow the scope, focus on a target to go deeper, and improve efficiency, the scene can't be unsealed because our case has not been solved, the landlord should have called you to urge, I am not worried about his urging, but the assistance and cooperation we need in the process of handling the case should be necessary and reasonable."

Qin Gang looked at Li Yi and waited for his answer.

Li Yi picked up the unfinished blended wine on the table, opened the lid and sniffed, "I also think that there is a need to lock one or two targets, otherwise it will always be in a state of overseas shopping, and having a direction is actually equal to no direction." Li Yi held his chin and continued with a deep groan, "Also, we may be able to try to conceal some criminal investigation methods in private without suspecting the target, otherwise we will always be passive, I feel that I am always going in circles, and when I walked half a circle, I seemed to find a lot of things, but when I walked down, I found that I had turned back to the original point, and I talked to Bian Wei again today, and it was still as plain as water, and I couldn't smell anything." ”

"Surveillance has been seen?"

"Well, after Bian Wei 7 went upstairs with two buckets of instant noodles in the afternoon, he never went out again. However, the wine was indeed blended by him, and he was very happy to confirm that it was him, but he forgot to tell Shao Guoqing that the three of them were drinking together, and blending wine was an irregular behavior, and it seemed that there was no suspicion. By the way, Bian Wei is a licensed professional bartender. Li Yi said.

"Sure enough, it's a sweeping monk, I don't know what secret skills he has hidden."

"You're not going to even ask the principals and leaders of the school."

"Of course not, they are not suitable for doing this kind of thing at that age, and besides, the sports school really gives our Liu team face, so cooperative, we don't have any actual things in hand, we can't be so reckless, I have verified the activity information of the security guard, no problem." The sports school really didn't have any clues to dig up, but after groping along the monitoring project, I still found a person. ”

"You mean Shao Guoqing." Li Yi said.

"Well, we have to have a breakthrough point, think about it, this is very important, and it is the only clue that can be extended at present." Qin Gang poked the whiteboard with a pen.

After a short silence, it was Qin Gang who spoke first.

"We have a direction, and I don't doubt the correctness of that direction, but we don't point to specific goals in this direction. In fact, only Lao Qiu and the three of them are in the bright place so far, there are many coincidences in this, No. 7 Ye Mengyin died, it just so happened that Lao Qiu No. 7 made an appointment with the wine party, and coincidentally Bian Wei was sick and couldn't go, in fact, he may have gone anywhere, this needs to be confirmed in the end. Next, it happened that the wine was blended, and Lao Qiu drank them, why did they want to blend? Of course, it is not illegal to blend. Shao Guoqing and Bian Wei both graduated from sports schools, and they often go to the past, and their familiarity with the internal environment of sports schools is no less than that of students in school, which is in line with one of our reasoning. Shao Guoqing is very likely to understand the monitoring layout and camera specifications, in other words, what he understands is actually able to understand that Bian Wei can also understand, of course, there must be a motive to become a precondition. Another point is that both of them are more or less related to Ye Mengyin, and the two of them are disciples of the same big yard, which is a step further than the general concept of friends. Especially Bian Wei, who has worked as an auxiliary police officer and has a certain degree of understanding of police affairs, this is also in line with another link in our reasoning, if this is a multiple-choice question, I want to choose Bian Wei first, then Shao Guoqing, and finally Lao Qiu. ”

Qin Gang's words Li Yi agreed, he also thought so, the location of Lushan Yijing is remote, if you kill people in the past, either there is great hatred or Ye Mengyin knows some amazing secrets, this can basically be ruled out.

The murderer entered the scene and was likely to kill because of an unexpected dispute, and then left in a hurry and contacted others to deal with the scene, from this point of analysis, he did not know the appointment between Qi Guobin and Ye Mengyin, and the vehicles that entered from the outside and the people inside the community were also investigated, there was no clear direction, and they could only be analyzed on the possible trajectory of this accomplice, and at this time, Lao Qiu and the three of them appeared.

Is it a coincidence?

The sports school is not the scene of the crime, and it cannot be used to collect evidence based on the presence of alcohol in the sports school, perhaps it should be confirmed that one of the three of them or someone close to them has or has a relationship with Ye Mengyin.

Because during the period of Ye Mengyin's death, she has been lying quietly at the scene and no one knows, and the lamb in the mobile phone memo has never appeared, which is unreasonable.

But the three of them all had alibi evidence at the time of the crime, so it could only be a third party C, so what kind of relationship is A and C, father and son, brother, and friend are basically excluded, what else will it be?

"What kind of relationship do you think there will be between A and C that will produce such a combination of killing and dealing with the scene?" Li Yi asked.

"Assuming that we infer that C is Bian Wei, it is most likely that he will deal with the aftermath for Shao Guoqing, and the relationship between the two of them is indeed not ordinary. And Shao Guoqing's account of the contacts and contacts between him and Ye Mengyin should be concealed, and we can privately transfer the phone records, but if we want to check Shao Guoqing's mobile phone, we may need more evidence, and we can also investigate the loopholes in his answer about No. 7 during the time period of the crime, then the AC relationship can be established. ”

"It's not like we're making inferences from what is suspected."

"Therefore, our investigation and evidence collection methods should be concealed, but in this case, Team Liu will not approve it."

"Then if it is confirmed that Shao Guoqing was not at the scene at the time of the crime, then the three of them can only play the role of C, who has such an unusual relationship with one of the three of them?"

Lao Qiu is just a teacher, and his social relationship is the simplest, and he lives in a corner of the sports school, and there is no chance to make waves in life.

Shao Guoqing has been in business for many years, and he must have a lot of social relations, but he is also a boss who is not big or small, and the role of being C is not quite in line with his social status, and it seems that he can't get any benefits in this role that are more beneficial than his company.

And Bian Wei, in his professional experience, is a three-class teacher, a white snow, and a ...... People of different ages, occupations, genders, and classes may have dealt with him, and it should be said that he has the most experience in life.

The most important thing is that he gave Li Yi the impression of a wide range of knowledge and a calm and calm conversation, feeling that he should be a talent in any line he does, and such a person is also very suitable to play the role of C, but it is also a waste, what kind of motive or unshirkable favor does he have to do this kind of thing that will inevitably be punished?

"In fact, our preliminary reasoning about the murder is an accident, which is correct, the original purpose of the murderer to go to the scene of the crime was not to kill Ye Mengyin, but there was an accident, and another character appeared, and the relationship between the two people determined the motive and purpose of C's appearance."

Li Yi had a little headache when he thought about it, he said this because he wanted Qin Gang to also substitute his ideas and brainstorm.

"I had a bold idea."

Qin Gang poured a small sip of wine from the wine bottle and looked around, there were no other colleagues in the office, but not only him and Li Yi, Team Liu didn't know when to come in and stand behind them.

"Drink it when you're done." Team Liu said.

"A and C may have been a couple, this is a love triangle relationship, the man, more scum, want to be left and right between the two girls, but the two girls are unbearable, the situation is like fire and water, and as a result, A is at the scene, killing people with passion, and looking for a scumbag to find a solution in a panic. Scumbag, both of them are deception anyway, and now it doesn't hurt to have one less, so you can add it in the future, and go to clean up the scene. And knowing that A killed someone, he can clean up the scene, and he can also collect physical evidence that we haven't found, such as the murder weapon or other traces, so that he has A's handle in his hand, and he can continue to deceive A emotionally, and can coerce or use A when necessary. Even if the matter is revealed in the future, he is not a murderer, and there is no big crime. ”

After speaking, he raised his head and drank the wine in the glass.

"Good brain." Li Yi and Team Liu praised together.