The Underworld Detective

To confirm this view, I examined it carefully, and it turns out that there are two sets of fingerprints on the deceased, especially a pair of heavier fingerprints on the shoulders. Looking at the direction of the force, it looks like one of the murderers held the victim down from the top while the rape was being committed.

Rape killings without the purpose of reprisals are often carried out with a strong degree of privacy and, in general, the perpetrator does not share the criminal process with others, but the case is unusually carried out jointly by two persons.

Is it true that someone is deliberately imitating the case back then, but it can't be decided now, maybe it's just revenge!

Sun Bingxin walked in and said: "Brother Song Yang, I have tested it, the blood contains trace amounts of chloropropane hydrochloride. ”

I was somewhat surprised: “Why so soon this time? ”

Sun Bingxin laughed: “The last body also detected this tranquilizer. The samples were still stored in the lab. I checked them out. I was lucky as a lottery ticket, and they were tested out of nowhere. ”

When she reminded me that the same drug had been found in the previous body, it was highly likely that the two cases had been committed by the same person.

Now I want to make sure that this time the killer takes the drug either by injection or by taking it, and if the latter is the case, more drug ingredients can be found in the stomach.

I ordered, "Check the stomach container now! ”

Sun Bingxin picked up the scalpel. Before I took the knife, I rubbed the scar on the victim's abdomen with my finger. I asked Sun Bingxin if this was from the Caesarean section. She said it should be.

I roughly checked, and from the melanin secretion around the scar, it was five or six years old, indicating that the deceased had a 5- or 6-year-old child, and I suggested that Sun Bingxin could have a knife.

We found some food residue in the stomach of the deceased. It's not very meaningful. It just further proves the time of death. Sun Bingxin took some gastric juice to test it.

I burned some yellow paper for the deceased and asked Officer Fatty: “How was the last investigation? ”

"The deceased, named Xiaofeng, worked in a music bar, worked part-time as a secret whore, and occasionally had sex deals with frequent visitors," replied Fatty. We visited the restaurants around the scene, found a river restaurant called Xiaofeng, and there was a man walking with him, wearing a mask and sunglasses, not knowing his face, about a meter and a half tall, medium size, preliminary identification that this was the suspect, and we were scrutinizing the surrounding videos. ”

I hid that this case was related to the case 20 years ago. I was ready to initiate a cooperative investigation. Huang Xiaotao gave me a look and said to Fat Officer: “I did not formally introduce myself before, my name is Huang, his name is Song, we belong to the Nanjiang Special Investigations Unit, an independent criminal institution under the Ministry of Public Security! The purpose of this visit was to investigate the serial killings in Ryokawa that year. The two cases currently occurring appear to be somewhat related to that case. If you don't mind, I hope that both of us can cooperate fully and that you will be rewarded afterwards. ”

Officer Fatty laughed embarrassingly: “If I didn't, I would have seen how small you were. If I could solve this case, it would still be a tranquility in Ryokawa City, and I could afford the badge on my head! Anything you need, just say it, and I'll give you my full support. ”

Huang Xiaotao looked at me and said: "Song Yang, come and direct! ”

I nodded: "Comrade police officer, gather all your men together and assign some tasks. ”

“Okay, I'll call you right away. ”

Fat officer stepped out first and Sun Bingxin stepped in. She said that more chloropropane hydrochloride had been tested in her stomach. It seems that the killer had many of these tranquilizers, which could be used as a direction of investigation.

Huang Xiaotao wondered: "This small county has been quiet for 20 years. This kind of imitation crime has been happening since we first came. Is it really because of us? ”

I said, "I don't think so. When the first case happened, we just arrived. I think the Knife God knew something beforehand, so he reminded us of this! ”

Sun Bing said angrily: “He knows why not to stop it! Two girls, just like that. Too bad. ”

Huang Xiaotao sneered: “He is just a pervert who pretends to be a righteous incarnation. He is not a warrior. Why should he stop it? ”

What they said reminded me why the Knife God didn't stop them. Did he think the two dead deserved to die?

I suddenly thought of something and immediately asked, "Did you identify the second victim? ”

Huang Xiaotao said: “Ask Officer Fat later! ”

It is only 6: 30 in the morning, the officers are not here yet. Huang Xiaotao proposes to go out for breakfast. I want Sun Bingxin to compare the DNA of the two victims. Sun Bingxin asks: “Do you suspect that they are related to blood? ”

I said, "It's just a guess. Thank you very much. I'll buy you dinner later. ”

Sun Bingxin smiled. “You're welcome. ”

The pace of life in the small county was indeed slow, and the police arrived only at 9 o'clock. We had a case seminar, and the two sides exchanged information, and I asked them to help find out a few leads: the detailed identities of the two victims; surveillance videos, witnesses that might have existed at the time of the incident; the presence of abandoned murder weapons around the scene; the source of chloropropazine hydrochloride used by the murderer; and all those involved in the serial killings 20 years ago.

After the meeting, Wang Ai Dynasty investigated the identity of the deceased. I intend to meet the wounded policeman - Niehalong!

Just about to leave, Fat Officer came after him and held an empty medicine bottle in his bag, saying it was evidence found in the last murder.

I was stunned to see that the bottle said 'tetanus immunoglobulin', a common tetanus vaccine on the market, and I asked Fatty where did the police find it? He said it was found in a handbag that the deceased left in the room.

Huang Xiaotao said: "The bottle is empty. Is the potion injected into the body of the deceased? ”

The first victim, Xiaofeng, was pushed to death from height. Her whole body was blurred. I'm not sure she had a needle eye, but I'm sure she didn't have tetanus. Because if you get stuck with rusty metal, the wound will be noticeable and I would never miss it.

Sun Bingxin suggested, “Test it. I've kept several copies of the blood samples from the last victim. ”

So we came to the lab, and the DNA sequencer was still working, and Sun Bingxin took a labeled blood sample from the fridge. Targeted testing was quick, less than 15 minutes later, and the result came out, Sun Bing said, “There is no tetanus vaccine in the blood of the deceased! ”

Huang Xiaotao asked: “Sure? ”

Sun Bingxin replied: “I tested the three groups and they were all negative, absolutely nothing. ”

I played with the little bottle in my hand, and I couldn't figure out what it meant to appear in the victim's bag, and I said, “Is it some kind of message that the killer wants to convey, like that gecko? ”

Huang Xiaotao helped his forehead: “These two have nothing in common. Forget it. If every trace of spider is meaningful, the case is too good to crack...”

I laughed, “You're right! ”