He remembered Yun Yeyao and Xie Yunmeng's analysis of the corpse, and they believed that the murderer might have smeared a mixture of rosemary and nicotine on the skin of the corpse, causing the toxicity to seep into the skin and the victim died of chronic poisoning. And these two things also keep the corpse from decomposing.

In Mo Haiyou's view, this answer is not reliable, rosemary and nicotine do have a certain antioxidant effect, which will be of some use in preventing the corpse from decomposing, but it will never be obvious.

Both of these are things with strong smells, and sometimes they are stained on the body or clothes, and they will not go away for a long time. Especially nicotine, many men who smoke have a smell of tar all year round.

If the murderer wants to rely on the absorption of the skin to poison the victim, then he must apply a thick layer of nicotine to the victim, and there is simply not so much nicotine extracted from ordinary cigarettes.

In addition, the metabolism of the elderly is already much slower than that of young people, and even if enough nicotine is smeared, it is impossible to poison people in a short time. The murderer didn't have that at all, he just had to apply nicotine to the corpse's mouth, and let the poison slowly flow into the stomach with the saliva, which was much more convenient.

So how to explain the smell of rosemary and tar from the corpse?

First of all, rosemary, the old woman did detect residues on her skin, but not much, that kind of thing can be found everywhere, although Wang Haicheng's yard is not planted, and his mother is a difficult person. But that doesn't negate the possibility that she brought it back from somewhere else, such as a neighbor or acquaintance.

Then there was the smell of tar, Yun Yeyao and Xie Yunmeng didn't look at the old woman's hand carefully, the hand she shook was already swollen because of the long exercise, the fingers were in a strange state, and the hand under the body was not much better, congested and deformed.

Mo Haiyou carefully examined the old woman's fingers, and the cause of the deformation was not simply excessive exercise, or suppression, but because of rheumatoid arthritis, a disease that would deform the joints, and the fingers would be crooked and swollen, which was very painful.

In addition, she works all year round, and there is a lot of plaster in her fingernails, so it is normal to be ignored by actors and criminal police.

In fact, the old woman herself had a penchant for smoking, and the skin and teeth at the tips of her fingers were yellow and black, and there was a faint smell of tar, and this alone did not mean that nicotine was the cause of her death.

Neither died of a sudden illness, nor did he die of nicotinic poisoning, so how did Wang Haicheng's mother die? The reason for this could only be found from the inside of the corpse, and Mo Haiyou asked the forensic assistant to prepare the dissecting tools, and he was going to examine the old woman's internal organs and slice them for analysis.

Here Xiao Xie came to the vicinity of Wang Haicheng's house, and according to Mo Haiyou's instructions, he and the police began to look for something in the dirt of the yard, looking for things in the yard on both sides, looking at their careful appearance, the things they were looking for were estimated to be very small, maybe the scraps of plants.

While searching, Xiao Xie was still thinking about another thing in his mind, which was related to his disappearance at the beach for no reason yesterday evening. While asking the trio to investigate, Xiao Xie also wanted to clear his mind.

Before Mo Haiyou arrived at the scene of the villa homicide, the first person to find the body was the housekeeping aunt, and then him. When he was checking, Yan Muheng came over, this guy didn't take a second look at the scene, and then he kept following Mo Hai right and around.

From their conversation, Xiao Xie knew that Yan Muheng had secretly entered the scene alone, before Mo Haiyou arrived, so when did he enter? Xiao Xie thought it could only be before the housekeeping aunt found the body.

This matter is quite strange, no one reported the case, how did Yan Muheng know that there was a corpse here? Perhaps he did not know at all, but for what purpose, entered the scene of the murder. But this is not the focus of Xiao Xie's troubles at the moment, he does not doubt whether Yan Muheng is guilty or not, but he is suspecting another person, judging from the various signs at the scene, the possibility of another person committing murder is very high.

And from a certain point of view, this person also has quite sufficient motivation, so Xiao Xie has always been worried. Going to the beach and asking the trio for help was also out of strong concern.

How do I find him?' This guy is really going to make a mess! Xiao Xie thought and looked around, but no police officer looked at him.

Retracting his gaze, Xiao Xie continued to think, and the housekeeping aunt's face appeared in his mind, "I also want to ask that aunt, I will get some clues, and when the work here is completed, I will find a reason to go alone." ’

The thought urged action, and Xiao Xie sped up his movements, using his hands to remove the loose dirt from the yard floor.

——

Dirty, smelly place, middle-aged woman sitting alone, waiting for someone, a demon who has returned from hell.

"Knock knock

Although she had been mentally prepared, the sudden knock on the door still startled her.

Somewhat frightened, he stood up and walked to the door, which creaked as soon as his fingertips touched the doorknob, and alarmed the eyes of the guards in the darkness.

"Don't get excited, be quiet." The middle-aged woman said to the back as if she had countless companions.

When the door opened, there were waiting faces outside, and the girl in the middle moved the guardrail at the door a little bit to let him in.

Walking to the center of the courtyard, the surroundings immediately began to be noisy again, and the middle-aged woman had to scold again: "Be quiet! Stop arguing! Her voice seemed to have a magical power, suppressing the annoying noises.

"What's the use of you? Leave that alone, and come with me into the house to talk. The visitor was very calm, and walked first to a small room on the side, where there was a table at the door, on which there seemed to be a donation box or something, which could not be distinguished in the dark.

The two of them whispered in the house like this, accompanied by the sounds of the courtyard outside, and they couldn't guess what they were going to do.

Soon, the sky in the second half of the night was reddish, and the sky was about to dawn, and the person who came came out of the middle-aged woman's place and left in a hurry, leaving no trace at all.

No one watched him leave, and the middle-aged woman was still sitting in the room pondering.

——

Lu Jinyan, a housekeeping aunt who was recuperating at home, couldn't rest assured that the case was not her good thing, but that the owner of the villa still owed her wages for several months, and she wanted to know who to ask for after this salary?

After thinking about it, Lu Jinyan still decided to ask the criminal police, so she picked up her mobile phone and prepared to call Xiao Xie's number, at this time, Lu Jinyan realized that she hadn't written down Xiao Xie's phone at all, and only the phone left by the police investigators at home.

Let her call the police station directly to ask about the salary, that is never dare, Lu Jinyan put down the mobile phone in a dejected manner, for a poor housekeeping aunt, the salary in those months was not a small amount.

'Alas! It's annoying, if only it hadn't happened. ’

picked up the drawing paper on the bedside table, Lu Jinyan only glanced at it, and threw it under the stool, that thing was useless to her.

Moving her body to get off the bed, Lu Jinyan moved her hands and feet, and walked outside the door, the relatives outside were almost gone, she needed to do some housework by herself, after all, she was not seriously injured, and she didn't need so many people to take care of her.

'Call them one by one later, tell them not to come, it's annoying!' Lu Jinyan thought and disappeared outside the door.

The time at the moment is just after 12 p.m. on the first day of the homicide.

——

So far, here in Mo Haiyou, there are already a lot of flaws in front of him, not only the results of the autopsy, although some people are not murderers, they are still hiding some things, what is the reason for concealment? Mr. Medical Examiner has to figure it out.

So he used all the resources at his disposal, he couldn't go to the prisoner to ask as often as Fu Yan, too much participation in the interrogation would make Fu Yan dissatisfied, because he was a forensic doctor, and in this case, there was only one role.

Mo Haiyou followed what he had to do step by step, and had no intention of leaving the police autopsy, but half of his heart had already reached the periphery, and at this moment, more clues were being revealed step by step.

Wang Haicheng's mother's internal organ slices have just been taken for testing, and Mo Haiyou has finally made some substantial breakthroughs in the cause of his death. As mentioned earlier, she did not die of disease, nor did she die of nicotinic poisoning. From the internal organs, Mo Haiyou found a serious internal bleeding phenomenon, which was very widespread, including the liver, kidneys, and stomach and intestines, as well as the rupture of blood vessels in many places.

These could not be seen from the surface of the body, and the old woman's expression was painful, and a large part of the reason was internal bleeding.

Mo Haiyou opened the abdominal cavity of the corpse, and the blood in it did not turn black, which corroborated the judgment that it was not poisoning and death. But it also reflects an even more unacceptable judgment, that is, the old man was hit by external gravity before he died.

The so-called external gravity blow is not only limited to being beaten, if it is beaten by someone, resulting in internal bleeding and death, there will definitely be bruises on the body surface, but the old woman's body surface has no other injuries or bruises except for the wounds caused by the fishing line.

It is not a human beating, but it can only be that the body is crushed by gravity beyond the range of internal organs, causing internal organs and blood vessels to rupture and bleed. From this point of view, suicide is also possible, but the premise of suicide is that the old man can act independently, and from the previous judgment of the fishing line, the old man has been tied up twice, so suicide is not established.

So where does gravity come from? At present, the only one who has time and possibility to do it is Wang Haicheng, but Mo Haiyou is not ready to ask Wang Haicheng about it again, but he has made some unexpected judgments.

——

"Xiao Xie, can I trouble you to go to the stray dog shelter?" Mo Haiyou said on the phone.

At this time, Xiao Xie was worried about those plant fragments, and asked rhetorically: "Forensic Doctor Mo, you can't find those plant scraps here at all, I have already rummaged through the yards on both sides." ”

"Those are all plants that contain alkaloids, because Shen Muyan died of alkaloid poisoning, so I asked you to look for these things, are you sure there are no similar pieces in the yard? I've found some scrap next to Shen Muyan's corpse, but it's not the same plant in his mouth. ”