Team Liu made two cups of tea and called Li Yi and Qin Gang into the office.

"Today's movement is not small, it seems that you have found a way to the west to learn scriptures, talk about it."

Team Liu pointed to the sofa, "Look, I just wiped it, I wiped it myself." ”

"Let's stand and talk." Li Yi motioned for Qin Gang to stand up.

Qin Gang took a sip of tea and quickly put down the cup, "This tea is so hot." ”

Team Liu smiled slightly, "The tea is not hot, you can't drink the fragrance, the hot potato is delicious, if you don't want to sit, you can stand in a military posture, I like it too." ”

"Actually, what we're doing today is starting from scratch." Li Yi said.

Team Liu looked at the calendar on the table, "It's been a few days since I took over the case, what I told you is to report to me in two days, let me know the progress, I don't call you this sofa, you won't take the initiative to come in and sit." Okay, let's not talk about the zero in front of us, let's talk about today. ”

Li Yi straightened out his thoughts, "Our initial inference is that it is a love murder case, but where the situation comes from, this is also one of the directions to be found in today's large-scale search." There have been three or more people on the scene, and we analyze it as three people. ”

"Three people? Wait a minute. Team Liu put down the teacup in his hand, "The three of them committed the crime together, just to deal with a little girl?" ”

"You have to listen to me patiently, the process of this case we analyzed is a little complicated."

Li Yi simply stood up and pulled up a rolling wheelchair next to him, sat on it and slid to the side of Team Liu's desk, "The sofa is too far away, I told you that I was tired." ”

Turning his head, Qin Gang pulled the whiteboard over, and got up and wrote on the whiteboard: murderer, passerby A, accomplice.

"Passerby A is Qi Guobin, who you have tried, he made a cameo appearance on the spot, and I will give you a look from the beginning."

"Come on."

"The evidence collected at the scene of the crime did not find anything, which is our pain point, and the future criminals will be brought to justice, and proving their guilt will still be our pain point. We went to visit and ask Ye Mengyin's colleagues and friends who had been in contact with her according to the usual pattern, and analyzed that she should have a boyfriend according to the correspondence between the information and the information on the mobile phone at the end. ”

Li Yi asked Qin Gang to draw a cloud on the whiteboard and write in the cloud: Phantom Lovers.

"Do you know how to paint fog?" Li Yi asked Qin Gang.

"I'm not an art student."

"Well, this lover, has been in the clouds. From the death of No. 7 Ye Mengyin to today, there has not been a bubble. Ye Mengyin's social relations in Sui City are simple, and there are only a few people who come and go, and we have already sorted it out twice, and there is no follow-up. This living person, whether he is tall or short, fat or thin, old or young, male or female, whether he is carrying a big bag or an IT ......, knows nothing. I couldn't check it anymore, and I began to doubt my IQ. ”

Li Yi's words also hit Qin Gang, during this period of visiting, investigating, and asking, it seemed that he had found some clues, but in the end, he found that he only made a step action at the origin.

"We once wanted to find the operator to retrieve Ye Mengyin's chat information through the handling of the company, but I later did an understanding consultation, and the background was only kept for seven days, but when we received the case, it was seven days, and this idea was broken."

"You take a sip of tea, I never doubt your IQ." Team Liu pointed to the cup.

"In the past two days, Qin Gang and I have been thinking about how to break this situation, since it is a murder, cleaning up the scene, and escaping, then this person has to enter the scene of the crime first, so the route and method of entering and leaving the scene have entered our field of vision."

After speaking, Li Yi sat down and took a sip of tea.

"The results of the evidence collection may not be very good, and I don't think it's useful to bring back a lot." Li Yi said.

"Accumulate little by little, as long as the direction is right, you can always clear the fog and analyze it." Team Liu said.

Li Yi coughed twice and analyzed about several aspects.

One: There are three people before and after.

Two: The first person arrived at the scene and killed Ye Mengyin for some reason, but he couldn't handle the scene, so he left immediately, and then contacted another person to come over and deal with the scene, or it could be another accomplice who notified him at the scene.

There are three details here, the first is that according to the second passer-by A who arrived at the scene, he did not have the key to Ye Mengyin's room, and the door of the room was not closed when he arrived at the scene, indicating that the former should have been more panicked when he left, and it also proved that the former did not have the ability to clean up the scene.

The second point is that according to the angle of the knife stabbing into Ye Mengyin's body, the height of the perpetrator is similar to Ye Mengyin's or slightly shorter than Ye Mengyin.

The third point is more treacherous, Ye Mengyin was wearing a skirt when she died, but there was no tear on the surface of the skirt near the wound, and the whole skirt was intact. According to the second passer-by who arrived at the scene, when he left in a panic, Ye Mengyin was wearing a long skirt, not a dress, because he was so flustered that he couldn't remember what style of long skirt. But the dress Ye Mengyin was wearing was a birthday gift bought by passerby A for Ye Mengyin, and this memory must not be wrong. That shows that the murderer changed Ye Mengyin's clothes, what is the purpose, maybe it is a ritual, but there is no way to know at present.

Three: The second person to arrive at the scene was Passerby A, who had already been released, and from the evidence to the investigation, he was not the murderer.

He just had an appointment with Ye Mengyin, and then arrived at the scene, after witnessing that Ye Mengyin had died, of course, Ye Mengyin may not have really died at that time, but out of fear and fear, he did not choose to call the police, and when he fled, he was worried that the police would learn that he and Ye Mengyin had agreed to meet through the investigation of the mobile phone, and there would be a suspicion of the murderer, so they took Ye Mengyin's mobile phone and then discarded it.

One detail here is that when he left, he must have locked the door, because of nervousness, the sound of closing the door was still loud.

Four: And the last person to arrive at the scene is an accomplice.

His purpose was to clean up all traces of the site, and the site was indeed cleaned up quite cleanly.

He had plenty of time and clearly knew that Ye Mengyin lived alone, while Li Yi and Qin Gang tried to do a simulated cleanup at the scene, which took about four hours.

Although the room is not large, this is different from ordinary household hygiene and cleaning, doors and windows, floors, bedroom wardrobes, beds, bedside tables, dressers and even bathroom floor drains have been cleaned, leaving no trace of extraction.

So there is reason to believe that the accomplice took more time, and similarly, when he left, he took Ye Mengyin's wallet and the toiletries in the bathroom, which proves that he has a strong sense of anti-reconnaissance, and ordinary people will not have such meticulous thinking.

There is a detail here that he has unobstructed access to the room, that is, with a key to open the door to enter. It is speculated that the time when he arrived at the scene was at least after 14:30, and according to this time, then the time of his departure must have been in the evening.

"Today's large-scale evidence collection is mainly to determine a route for the accomplices to and from the scene, and this route will leave more or less traces. Since we can't get more useful clues from Ye Mengyin's side, we might as well reverse it, and we deduce the process from the results, this is our way of thinking. Li Yi said.

"You analyzed that this accomplice entered the forest through the sports school, and then passed through the forest into the community, and after completing the scene cleaning, he returned the same way, right?"

Team Liu looked at Li Yi, "Do you want to add water, Qin Gang refills tea for him, I'll listen." ”

Li Yi took a sip of tea and continued to analyze Team Liu.

One: Regarding this accomplice, his goal and task of going to the scene is very clear, so it is inferred that he will definitely be fully prepared, should bring some tools, or need to take some items from the scene, so he will definitely need a bag or bag that holds these tools and items, either a backpack or a satchel.

From the point of view of the need to climb walls, backpacks are more suitable.

Two: Since what he has to do is to go to the crime scene to clean up the evidence, then he should have a set of designed routes from departure to return, and the means of transportation he needs to go back and forth. And how to avoid some camera surveillance on this line will also have detailed considerations, only in this way can it be as unobtrusive as possible.

Three: Lushan Yijing geographical location is very partial, the bus only to the sports school terminal, there is a forest between the two, there will be no one during the day and no one at night, this is the best shelter. The sports school is more lively, but from the sports school to the Lushan Yijing side of the desolate, although the ring road is less people and fewer cars, at night a person from the Lushan Yijing Avenue out, the degree of recognition should be relatively high, and to pass through the north gate of the sports school, there is a camera.

So the best way is to take a car to the sports school or near the sports school, and the neighborhood opposite the west gate of the sports school can be an option. In the sports school, you can avoid the gate and find a no-man's land to climb over the wall to enter, wear from the campus to the other side of the wall and then turn out, walk from the forest to the foothills and Yijing to climb over the wall to enter the community, and the same operation is done when leaving, which is the best choice.

Li Yi paused and wrote on the whiteboard: Action track.

"Last night, Qin Gang and I walked roughly once according to this routine, the forest of the Lushan Yijing and the sports school, the straight-line distance is about one kilometer, and it took us about twenty minutes last night to get out of the stinky sweat. The main reason is that the grass is too dense, the soles of the feet are pitted and invisible, and it is easy to trip and fall, Qin Gang ate a mouthful of grass, the grass is dense in the dark, and it is difficult to find things if you accidentally fall down. In the same way, we deduce that this accomplice will encounter the same situation as us, and this is the purpose of our search today, hoping that he will really fall and leave something behind. Also, walking through the forest to the side of the sports school wall must be sweating profusely, always have to take a break to wipe the sweat, or enter the sports school will always bump into students from time to time, unkempt and sweaty, in the evening time is still eye-catching. Of course, we took on the case in a few days, and if we dropped something, the accomplice had enough time to look for it, but there was also a risk of showing traces. We are considered 'Haidilao' today, and there is no guarantee of harvest. There is another point in this, I can think of using this method to enter the scene covertly and then leave, this person must be familiar with the sports school environment, and it is not ruled out that he may have lived in the sports school. You have to have a certain amount of courage, a person wears that wild forest in the middle of the night is frightening for ordinary people, and there will be traces inadvertently left in a panic, and there is more than one place, but from the items we have just finished, it doesn't feel like it was left relatively recently. ”

After Li Yi finished speaking in one breath, he sat down and took a big sip of tea.