"There are cigarette butts here." Tang Jingjing squatted down and pulled a bag of instant noodles with her hand. Underneath the instant noodle bag, there is a cigarette butt. I put on my gloves and carefully picked up the cigarette butt, surprised to find that the saliva on it was still wet.

I was taken aback: "Lin Lao, I feel that the suspect has come here again within an hour, and it seems that he has come to enjoy that pleasure again." ”

Lin Lao immediately nodded: "Go and ask if anyone has been here within an hour." ”

I hurried out to ask, only to learn that no one had come within an hour, not even from morning to now.

I immediately handed over the cigarette butts to them and immediately took them to the hospital for testing, and also tested whether the instant noodles taken from the little boy's stomach were any drugs that could make people dumb.

The policeman nodded immediately, took the cigarette butt and left in a hurry.

In the previous autopsy of the deceased, there were no traces of the deceased's mouth being enlarged, that is, it was not an external force, but it may have been something that caused temporary dumbness.

Lin Lao analyzed: "The only people who can enter the scene are our police officers and their families. So immediately compare the DNA of all the police officers and the boy's family to see whose DNA compares to the saliva on the cigarette butt. ”

I immediately called the head of the police station and asked him to start his current work immediately.

The director immediately told us that a laboratory team had been dispatched from above, and they came in a big truck to cooperate with our work. I said it would be better, because it would save a lot of complicated work.

Tang Jingjing said: "Old Lin, I think there may be another source for this cigarette butt. ”

Lin Lao looked at Tang Jingjing: "What do you say?" ”

"Could it be that someone deliberately threw it in through the wall?"

Lin Lao frowned: "The possibility should be very small, unless the other party is a fool." Why did he deliberately throw cigarette butts in from the outside? Are you trying to provoke us? ”

Tang Jingjing nodded: "I just said that there is such a possibility." ”

I walked back to the place where the body was hung and checked the wall opposite. The wall is very clean, and it can be seen that the murderer is very meticulous and has cleaned the opposite wall, and this place is much cleaner than the other walls.

However, even if the other party cleans it cleanly, it can still be extracted by technical means, unless the other party has treated it with a very special method.

It is recorded in the "True Book of the Collection of Grievances" that when there is no trace, it is smoked with charcoal fire, and the strong light shines on it, and the fire arrives, and the traces appear spontaneously.

In other words, grill the place where there may be traces with charcoal, and then shine it with strong sunlight, and the marks will appear. However, now there is a special trace theory, only need a strong light photo or ultraviolet lamp, and the footprints can be clearly photographed on the photo.

I asked the police to prepare a strong light camera, and the police station didn't have professional equipment, so I went to the photo shop to look for it, and I had to find it anyway.

Soon, the police came with a woman. Woman holding exposure wall and camera, looking professional.

However, the space inside was too small to fit the exposure wall, so I had to put it on the window, and the photo was quickly taken, and the woman took it back to rinse. In order to avoid any further accidents in the middle, I simply asked a policeman to go with me.

We searched around the site again, but we couldn't find anything else, so we cordoned off the site.

Just as she was about to leave, Tang Jingjing suddenly said that she smelled a faint smell of blood.

I wondered if it was impossible, the little boy was suffocated to death, and there was no place to see blood, and asked Tang Jingjing if he smelled it wrong.

However, Tang Jingjing said very firmly that it was impossible to ask a wrong question, there must be blood.

I had to search the scene again, but I didn't find anything. Li Hong ran out of the kitchen and said that there was a slaughtered chicken in the kitchen, and Tang Jingjing was disappointed and said that it might be chicken blood!

We went directly to the police station, where a medical vehicle was collecting blood from the officers at the scene. Naturally, there is no way to transport the DNA testing equipment, so it can only collect blood on the spot, and then send it to the hospital for laboratory testing through an ambulance.

It didn't take long for the proprietress of the photo studio to send us a few photos with messy footprints, although not clear, but the outline was still visible.

I suddenly remembered something, and I asked the director, "Look at the footprints, it seems that the deceased was still wearing shoes when he died." When you found the body, did you find any shoes? ”

The director shook his head and said, "No, the scene you see is the original scene." ”

"Strange, where did the little man's shoes go? The murderer took away the child's shoes? Why did he do it? ”

I looked at Lin Lao.

Lin Lao groaned: "From a psychological point of view, I think the other party may have a foot fetish. ”

I nodded thoughtfully.

"Judging by the traces, this should be a pair of sneakers." I said, "And you see, this mark, it seems to be Adidas's, it should be a few hundred dollars, could it be that the murderer was greedy for money and took the shoes away?" ”

Lin Lao said thoughtfully: "There is such a possibility. So, now the director, we have another task, go to the village to see which child wears Adidas shoes, record it, and it's best not to let them know the purpose of our investigation. so as not to startle the snake. ”

The director immediately nodded: "Okay, I'll send people to act separately now." By the way, I think it is necessary to check Lai San'er's residence and deserted house, who knows if it will be Lai San'er who hid his shoes? ”

Lin Lao said: "Let's go find the deserted house, you are mainly responsible for the children nearby." ”

The director nodded and led the people away. Lin Lao also took us to the deserted house again.

Lin Lao told me that he didn't have much hope. Because even if the murderer killed the little boy, it was impossible to dress his own child, isn't this clearly exposed? And in this deserted house, it should be impossible to find those shoes. The reason why we had to find it ourselves was because we were afraid that the director would destroy the place.

Judging from his decades of experience in handling cases, this place is likely to be heavily involved in homicide cases.

We inspected the site and found nothing. Anyway, we came here just for show, and we didn't really have much hope.

After we went back, the director happened to come back too, and looking at his dejected appearance, we knew that there must be nothing to gain.

The director said that he had not found it, and could only hope that his men would find something.

His men came back one after another, and it seemed that they didn't notice it. The last one to come back was Xiao Li, Xiao Li was still leading a child, and he was holding a pair of sneakers in his hand.

The director was shocked and hurriedly asked Xiao Li what was going on?

Xiao Li said triumphantly: "At first, I asked this kid, and this kid said that he didn't have such shoes. But when I saw that he was not reluctant to speak, I knew that he must be lying, so I pretended to leave. Unexpectedly, as soon as I left, this kid took something from home and walked out, I thought it must be shoes, so I went up to check it, and found that it was indeed Adidas' shoes. ”

The director said well done.

After that, the director handed me the shoes.

The shoes were new and had just been wiped, and it seemed that his owner loved them.

Before we could speak, the little boy immediately said stubbornly, "I didn't steal these shoes." ”

"Know you didn't steal it." Xiao Li sneered: "Did you snatch it?" ”

I immediately scolded Xiao Li and told him not to speak.

Lin Lao walked up and touched the other party's head with a smile: "Little guy, I know you didn't steal it, I just want to know some information." You tell us the truth, and I'll take you to KFC later. ”

The little boy was twelve or thirteen years old, and it was the time for gluttony. As soon as I heard that there was KFC to eat, I immediately said, "Okay, I'll say whatever you ask." ”

Lin Lao said: "How did you get these shoes?" ”