Mo Haiyou handled all the things and returned to the forensic studio, although the scattered work can be replaced by forensic assistants, but the main inspection work has to be done by Mo Haiyou himself.

Mo Haiyou walked to a freezer with an uninspected label, and was about to open it, when he suddenly caught a glimpse of the label on the freezer next to him, and the word Wei Precious was written on the label, and a line of labels was added below.

He immediately called a forensic assistant and asked, "What happened to Wei's precious body?" ”

"Forensic Doctor Mo, after you left, we followed the procedure to biopsy all parts of Wei Gui's body and outside the body for re-testing, but something very strange happened."

"What is it?"

"Neither the internal organs nor the blood contain drugs, but trace amounts of new drug residues have been detected on the surface of the skin. The specific location is in the thigh, where we find an extremely small pinhole. ”

"So, sleeping pills and drugs are injected together?" Mo Haiyou asked.

"It doesn't look like it, because sleeping pills are left in Guard's blood, and drugs are only detected a little bit around the pinhole. In view of this strange situation, we did not classify Wei's precious body as an examined corpse, but placed it in the freezer on the side of the unexamined corpse after the text on the label indicated it. ”

"Okay, I see, please move Wei's precious body to the morgue, and I'll examine it carefully."

"Yes."

After the assistant answered, he immediately opened the freezer, took out Wei's precious body, moved it to the morgue again, and pushed the tool cart used by Mo Haiyou to the side of the corpse.

Mo Haiyou tightened the rubber gloves on his hand as he walked towards the morgue, thinking about why this phenomenon occurred.

If sleeping pills and drugs were injected at the same time, it would not have been possible for sleeping pills to enter the bloodstream, while drugs did not. So, what if there are more ingredients in sleeping pills and only a little bit of drugs? That's not realistic, after the syringe is injected, no matter how much this thing is, it will penetrate into the bloodstream.

As long as there is a little bit of composition, with the current inspection technology, it can be analyzed.

Unless there are only sleeping pills in the syringe, and the drug is contaminated on the outside of the syringe. When the killer injected it, the drug was only applied to the surface of Wei's skin, and did not penetrate into the capillaries.

Thinking of this, Mo Haiyou asked: "Is the skin around Wei Guigui's thighs only contaminated with drugs on the surface?" ”

"No, there are also residues in the fat layer and capillaries under the skin, but the amount is extremely rare, because Wei Guigui's whole body is almost full of knife wounds, so we can't extract a complete piece of skin, we can only cut a lot of fragments around the pinhole for testing, and the result is that only the skin and tissue fragments closest to the pinhole can detect drugs, and the other parts are none."

"Got it."

Mo Haiyou lowered his head and opened the skin and flesh on Wei Guigui's thighs to observe carefully, the skin of perennial drug injection will appear gray-yellow, and accompanied by phlebitis and epidermal necrosis. None of these phenomena on Wei Gui's skin means that he is the first time to be injected.

Using tweezers to carefully pick out the capillaries in the subcutaneous tissue, Mo Haiyou observed under the microscope that although the blood clotted after death, these broken capillaries looked very normal and had no lesions.

First of all, the murderer did not intend to kill Wei Precious right away, so it was normal to have sleeping pills in the corpse, because he had to keep the living Wei Precious quiet before he could proceed with the next move.

According to Cheng Chu's confession, as well as the reasoning of Luo Yifan and Yun Yeyao, when the murderer killed Wei Guigui, he was still in a coma. If only sleeping pills were injected, the severe pain could still wake Wei Gui up.

However, judging from the condition of the wounds and subcutaneous tissues on the body, when these knife wounds were formed, Wei Guigui did not resist. Because the front of each wound is very neat, although it is criss-crossed, almost no part of the incision is destroyed.

This can only show that during the entire killing process, Wei Guigui has been in a coma and does not feel pain at all. This phenomenon is only possible in the case of a deep coma, so the syringe must contain a drug component.

In general, psychotropic drugs such as sleeping pills can be used to treat drug addiction, that is, to dilute the reaction of drug addiction by paralyzing the nerves, so that the person who is recovering from drug addiction can sleep or fall into a temporary coma.

However, if hallucinogens are mixed with sleeping pills, they will be completely paralyzed while hallucinating, and they will not even feel any pain, but they must be mastered in a certain amount.

The mixed use of drugs is likely to cause death if it is not appropriate, and the murderer does not want Wei Guigui to die immediately, but wants to slowly torture him to death, of course, he will not add too many doses of drugs.

"I need more detailed data to get these things back to the laboratory right away." Mo Haiyou stood up straight and said to his assistant.

At this time, the assistant was handing him the previous test report, which only tested for drugs and sleeping pills, and this time, Mo Haiyou asked for a laboratory to test all the ingredients contained in the subcutaneous tissue.

According to the current laboratory tests, the dose of drugs that have penetrated into Wei Gui's body is very small, so it is necessary to check whether Wei Guigui's original body contains anti-drug drugs.

If the proportion of anti-drug drugs is much larger than the proportion of drugs entering the body, then it is likely that they directly neutralize or cancel out the main components of the drug, so that the blood is completely undetectable.

Mo Haiyou asked his assistant to carry Fan Xin'er's headless body to the coroner's body, Fan Xin'er is different from her husband, the surface has shown an obvious vascular network state, and the corpse green phenomenon is also relatively serious, and the surface of the corpse is swollen.

She was the first deceased in the Luoque House, she had died on the evening of May 2, and by the time the police broke through the Luoque House and brought out the body, Fan Xin'er's death time had exceeded three days, coupled with the humid climate, the temperature on the mountain has been maintained at about 25 °C, and various factors have been superimposed, resulting in Fan Xin'er's decay rate relatively fast.

The first thing to check is whether Fan Xin'er's corpse has the same pinholes as Wei Guigui's body. At that time, Fan Xin'er and Wei Guigui were trapped together, and it is very likely that the murderer injected them with sleeping pills together.

Moreover, before Wei Guigui escaped from the secret passage, Fan Xin'er had already been moved to the red room, even if she was frightened, she might wake up during the transportation, so the murderer must have taken certain measures to prevent her from waking up.

Fan Xin'er's corpse was much more decomposed than Wei Guigui's, Mo Haiyou and several assistants worked together, and they carefully examined every part of the corpse's surface, not even an inch of skin, and finally found a wound above the collarbone that was suspected to be a pinhole.

This is exactly the place where the neckline is exposed, and the pinhole is left in this place in line with the logic of ordinary people's hands-on behavior.

According to Cheng Chu's confession, it is now certain that Wei Guigui and Fan Xin'er were indeed injected with sleeping pills at the same time, and they used the same needle. After the needle was used, it was inadvertently lost by Cheng Chu.

And the small pieces of glass that Luo Yifan picked up in the secret passage were left on the syringe, which shows that at that time, when Cheng Chu was finished injecting and carrying Fan Xin'er's body, the syringe accidentally slipped off his body and shattered in the secret passage.

Judging from Luo Yifan's description, he smelled the smell of drugs in the fragments, indicating that the drugs were indeed mixed with sleeping pills.

Then, if the drug ingredient is detected in Fan Xin'er's blood, it means that Wei Guigui must have taken some anti-drug drugs orally, which caused the drug to be disintegrated and 'disappeared' in the blood.

Generally, oral drugs, mainly used for resistance and treatment in the body, are difficult to penetrate into the skin surface from the inside out, so there are still trace amounts of drug ingredients left near the pinhole where Wei Precious was injected.

However, these still have to wait for the inspection report to come out before they can be fully proven.

The problem now is that, according to a survey of Wei Gui's usual life, he does not get sick very often, and there is very little record of buying drugs in pharmacies and hospitals, as is his wife.

Therefore, it is only possible that Wei Gui swallowed a large amount of anti-toxic drugs on his own after the fact, and many of these drugs have the effect of paralyzing the nerves. One speculation is that Wei Guigui may not have been able to stand the pain and took the medicine himself.

But there are two loopholes in this speculation: first, it is impossible for Wei Guigui to guess what the outcome will be in advance, how can he prepare similar drugs? Second, anti-drug drugs are completely different from anesthetic drugs, that is, he has a hunch in advance, and the preparation should also be ordinary anesthetic drugs that can be purchased in the hospital, such as diazepam and so on.

The above two points can completely negate the possibility that Wei Guigui took medicine after his injury. The second speculation is that someone gave Wei precious certain drugs after the incident to ease his pain. But this person only had anti-poison drugs at hand, so he secretly gave him a dose when he controlled the dose so that Wei Guigui would not die.

Mo Haiyou narrowed his eyes and thought, who could this person be? Who has the opportunity and purpose to do such a thing?

Hong Huijian's accomplice must not be possible, so Jiang Xinglong? No, it can't be, Jiang Xinglong was worried that his crime of helping to hide drug traffickers would be discovered by the police, and it was impossible for him to rescue Wei Guigui. And judging from Jiang Xinglong's scope of action, he had no chance to contact Wei Guigui after the disappearance.

So......

Mo Haiyou suddenly stopped the action in his hand, Wei Guigui did bring an unexpected 'surprise', but this may not have anything to do with the crime, it was just a trap for one person, and Mo Haiyou was sure that the person who made the trap didn't want the police to know about his actions.

——

In the middle of the night on May 9, in a ward of the municipal hospital, Mo Haiyou sat in front of a person who had just recovered from a sudden accident, he looked at Mo Haiyou, and finally agreed to tell his last action in the Luoque House.

His actions can be said to have completely destroyed Hong Huijian's murderous plan between May 3 and May 4, and put Hong Huijian at the end of his rope.