Netherworld Investigator Chapter 197: Crime Simulation

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I didn't leave the scene. Instead, I called Huang Xiaotao and asked her to bring my tools.

When I heard that I was attacked, everyone rushed over. Huang Xiaotao asked as soon as she came up, "Have you hurt?"

I shook my head: "No injury, do you remember the mysterious man who saved our life last time? He just saved my life."

Huang Xiaotao glanced at the cut steel pipe, and said, "You are a strong mysterious bodyguard, why didn't you catch the murderer?"

Who knows what this person is thinking!

I asked Huang Xiaotao to turn on the ultraviolet rays and use the autopsy umbrella to check the footprints. There were three footprints at the scene, a mysterious person, a pair of size 40 sneakers and a pair of size 35 leather shoes. I asked Xiao Zhou to take a plaster sample.

Huang Xiaotao asked: "Are these two people who attacked you related to the murderer?"

I said: "It's a big deal, they might want to kill me..."

This is just my guess. If you really want to kill me, this method is a bit inefficient. Why not use a dagger?

I found some solidified cement remained on the steel pipe, but there were no fingerprints. Apparently the murderer was wearing gloves. At this time, Wang Yuanchao came back from the other end of the alley with the same steel pipe in his hand: "There is a construction site next to it, and the murder weapon was taken from the construction site."

Not deliberately? Why is that?

Huang Xiaotao asked: "By the way, Song Yang, why are you buying sanitary napkins?"

I patted my head: "Oops, Sun Bingxin is still sitting on the toilet!"

Huang Xiaotao said speechlessly: "Why didn't you say it earlier, I have it in my bag, next time don't go out late at night alone."

I nodded: "Got it!"

After the investigation, we returned to the hotel. In addition to the identity of the murderer, the bigger puzzle in my heart is who the mysterious person is? When I was crossing the road, a car came. I deliberately slowed down and walked behind, and suddenly took a step forward when I waited for the car to come in front of me.

There was a harsh brake sound, and the driver yelled: "Boy, you are looking for death!"

Huang Xiaotao heard the movement running back, and blamed: "What are you doing, you are not careful when crossing the road?"

I said: "I want to try if the mysterious person will come to save me."

Huang Xiaotao smiled bitterly: "Your thinking is really inferior to ordinary people. How can you try it like this, if it is not worth it if you crash and die? If you really want to investigate, we will use criminal investigation methods to investigate."

The next day, Huang Xiaotao asked Sun Bingxin to rest in the hotel for a day, and we went to visit the auto repair shop together. There are only a few auto repair shops in the small county. I found out before noon. There was an auto repairer named Cao Dazhuang who disappeared last year. I asked the boss: "Have you reported the crime?"

The boss turned over the phone and found the last text message sent by Cao Dazhuang, which read: "Boss, I'm sorry to leave without saying goodbye. My cousin in the city asked me to help, and I don't need the salary!"

This is the habit of the murderer. I believe that the deceased should be Cao Dazhuang, but there must be DNA evidence. We asked the boss Cao Dazhuang’s address, and the boss replied: "He lives in a rented house, he might have changed tenants a long time ago."

Nevertheless, we asked for the address and found the landlord who rented the house. The landlord said that at that time Cao Dazhuang left without saying goodbye. It was his friend who came to help pack things and move, and also paid the water and electricity bills owed.

I asked: "What's that friend's name?"

The landlord shook his head: "I don't know, it happened more than half a year ago."

I asked: "Just say what you can think of."

The landlord carefully recalled: "It seems like a tailor! I saw this person in his shop once and said hello."

I asked the address of the tailor shop. I didn't expect that this friend of Cao Dazhuang was Zhang Qiang. I exchanged sights with Huang Xiaotao. It was a coincidence. I faintly felt that the two cases were related.

Farewell to the landlord, Huang Xiaotao asked me if I want to go to the tailor shop again, and I said, "No need!"

Huang Xiaotao smiled and said: "If you want to catch it, you have learned it very well."

The more the police suspect who is, the less likely they are to behave in the dark. It can be seen that Huang Xiaotao, like me, has already doubted Zhang Qiang!

I have been involved in solving cases so many times, and I have gradually developed a habit. If I suspect a certain person, I will put him in the silhouette of the murderer and compare it. Now the silhouette of the murderer is still a black shadow, but putting Zhang Qiang in, there seems to be nothing too contradictory.

Huang Xiaotao asked me what I want to do next? I said I wanted to sort out my thoughts, and she said, let's have a meal.

I bought a map of the whole county from a newsstand on the roadside, and then went to a Chinese fast food restaurant with Huang Xiaotao. I spread the map on the table and marked the permanent locations of the four victims. Huang Xiaotao brought a plate of food over and said: "Detective Song, do you want to perform divination again?"

I shook my head: "No, I'm just thinking about what the victims have in common."

Huang Xiaotao said: "They are all young and beautiful women."

I corrected: "You are talking about the common ground, I am talking about the common ground! In other words, are there any intersections between these four women with different occupations?"

Huang Xiaotao said: "Women like clothes. Maybe they were spotted by the murderer when they went to order clothes. If you look at it this way, the couple's suspicion is even greater."

I pondered: "Is that so?"

Huang Xiaotao said: "I will send someone to investigate where they had been before they died and verify it."

I nodded: "Okay, let's do a crime simulation this afternoon!"

Huang Xiaotao was surprised: "Huh?"

I explained: "Ordinary crime simulation, not a murderous trick!"

We returned to the bureau and briefly held a case study. Huang Xiaotao asked people to investigate the whereabouts of the four deceased one month before their death and the interpersonal relationship of Cao Dazhuang. After the seminar, the two of us found an empty meeting room to simulate the scene of the first murder case. The file said that the deceased was disfigured by hot oil during his lifetime, and the fatal injury was a blow to the back of the head. I felt this when I restored it. It is a contradiction.

Huang Xiaotao said: "I feel like you said before, the murderers are two people!"

I shook my head for a while: "I am not referring to this. If we are murderers, how can we complete this murder seamlessly?"

Huang Xiaotao said: "First of all, you must not leave fingerprints. Wearing gloves is a must; secondly, the tools used should not be too biased, such as electric drills and chemicals, which are too easy to be traced by the police; and the place where the body is thrown is as far as possible. Be concealed, and the later you discover, the better it is for the murderer."

I asked: "If you were a tailor and the deceased was wearing clothes made in your shop, would you take it off?"

Huang Xiaotao replied immediately: "Of course!"

I continued to ask: "If you want to disfigure, what do you think is the most appropriate?"

Huang Xiaotao replied: "Alkaline water and edible alkali can be bought everywhere. It is convenient to store and clean up. It is really troublesome to burn a pot of hot oil, and it is easy to leave traces at home."

I nodded: "You’re right. The first murder case looked a bit inefficient, and the technique seemed quite amateurish! But surprisingly, all subsequent cases were based on this routine, as if the murderer deliberately wanted Showing one’s own style, is it really to follow the folklore that the police would never believe? Or... the first murder was just unintentional, and all the rest were imitating it!"

Speaking of this, my thinking gradually became clear: "I guess this is a serial homicide that is gradually taking shape!"