The investigation of the facts of the case is not a simple matter in the first place.

Not to mention the serial murder case this time, not to mention the cruelty of the murderer's methods, what is more important is that Ding Fan suspects that the murderer has psychological problems.

This kind of personal obstacle is generally related to the experience suffered in childhood, or because of the blow suffered in adulthood, and there is no place to vent for a long time, which finally causes this psychological distortion.

Such people, generally speaking, are the kind of people who look very ordinary and can't be found in the pile.

Among the people around him, he belongs to a person who has no sense of existence, even if he is a person who has been dealing with him all the year round, it is very likely that he will not know his name in the end, and he will not pay special attention to this kind of person.

It is a harmless person and animal, similar to an invisible person, but no one would have thought that this person has actually been hidden among everyone all along, observing everything around him with cold eyes, always staring at his target with cold eyes, and already thinking about how to torture and kill the prey and enjoy that pleasure.

In order to show their existence, to stir everyone's nerves, to take it all as a pleasure, and thus to be complacent.

Such a person is too difficult to find, let alone these people who have been with him all year round, even if the police screen him one by one, they may not be able to pick him out of the crowd.

So in the course of the meeting, Ding Fan also tried to use the kind of psychological portrait mentioned in the book to try to draw the appearance of this person.

But in the end, Ding Fan still failed, and he had to admit that in the field of psychology, he had not yet reached that height, and he could not complete the portrait 100%, and the possibility of mistakes was still very high.

After this meeting, Ding Fan just re-divided the subsequent investigation work in detail.

Captain Niu is mainly responsible for the investigation of the nursing home, reorganizing the roster of the nursing home, seeing if there is still something hidden on it, and arresting Zhan Zhigan, the director of the nursing home who has escaped.

On the other hand, in addition to the news from the hospital, Yu Xiaobo is also responsible for drawing a simple map of the crime scene.

Ding Fan had taught him to draw a roadmap of the murderer's actions before, and the locations of several corpses had to be marked.

As for Liu Jian, there are relatively more things that need to be compared, and the information of all the doctors and nurses and all the staff in the nursing home must be checked.

This work can be said to be very cumbersome, on the one hand, it is necessary to apply for transfer information with the local household registration department, and on the other hand, it is necessary to check, which is a lot of work.

In fact, everyone has a lot of work, but the time will be relatively small, and Ding Fan only gave them two days.

Because the longer the time drags on, the more likely the murderer will be to do it again.

With these clues in Ding Fan's hands, he can only roughly guess the obvious characteristics of the murderer's height and physical appearance for the time being.

More things can only be seen in the later investigation.

In the three cases, the murderer did not leave any fingerprints and hair at the scene, except for Gao Yalin's time, which was a bit of a crime tool, the next two times, almost nothing was used, except for sleeping pills, which were considered to be things he used, but now I don't know if it can be matched.

Just when Ding Fan was worried about this matter, news had already come from the nursing home that the number of sleeping pills had not decreased at all, and it was exactly the same as the amount they usually used, and there was no less.

It seems that the line of sleeping pills is completely wasted, and I thought I could make some articles from it.

Now it seems that this matter is still a bit simple, and this murderer is not a fool.

There are a number of sleeping pills in the nursing home, and he can't say that he steals a box from here, even if he steals one, he won't be able to do it.

Just when Ding Fan was sitting in the conference room and scratching his head worriedly, Mi Mi finally came out of the toilet.

However, Mi Xiaomi's face at this time was a little ugly, and she vomited all night, at this time she was already sallow and yellow, and her originally ruddy little face seemed to have become a little shriveled up after this night, and her eyes were sunken.

"Are you alright? Why don't I have someone take you to the hospital?"

Looking at her like this, Ding Fan also had to think about her situation, and thought before that it was normal to be a little nauseous when she saw a corpse, and she was a little surprised.

It's good to vomit for a while, and the nausea will pass, but looking at her now, it's obvious that her state is a little not good, and if she doesn't get it right, there may be an accident.

"No, I can't vomit now, how is the investigation going? Where have they gone?"

Ding Fan glanced at the entire conference room, except for the smoke and dust that had not dispersed in the room, he was alone, and took out a small bottle of wind oil essence from his pocket and threw it to her.

"I was busy, the fat man went to the household registration department to investigate the data, Xiaobo went to the field to explore the site, and the cattle team took people to the nursing home, and I was left here. ”

Ding Fan replied to Mi Xiaomi's words, his hand did not stop, and he quickly drew portraits one by one, but every time he finished painting, he felt a little dissatisfied, and then threw the paper ball in his hand aside, and began to analyze the clues in his hand again, and started painting again.

Mi Mi sat opposite, glanced at the small bottle in her hand, and suddenly remembered something, reached out and took out a small medicine bottle from her pocket, and hurriedly said: "I forgot, I found this thing at the scene yesterday." ”

Ding Fan subconsciously glanced at the evidence bag in her hand, and her pupils instantly contracted.

Last night, Mi Mi ignored Ding Fan's dissuasion and followed the forensic doctor to the scene of the crime as soon as possible, but her feet slipped and fell into the water, and the water on the ground choked her mouth, and later found that it was rainwater below, and Tong Lihua's body had been soaked in the water for several days.

The most terrifying thing is that Tong Lihua's body at that time was less than two meters away from her.

When she saw the corpse floating on the water, she suddenly felt like her stomach was turning upside down, and she hurriedly got up from the ground, vomiting all the way and running outside.

I really can't imagine that when she was so nervous, she could still remember what she found from the scene at that time, and put it in the evidence bag.

Ding Fan stretched out his hand and took the small bottle and saw that it was just an empty small medicine bottle, and there was not a single medicine in it.

"Quick-acting heart pills, Tong Lihua herself has heart disease, and it is not surprising to carry this medicine with her. ”

After saying that, Ding Fan put the medicine bottle back on the table, but after the thing was placed on the table, he suddenly seemed to remember something, frowned and stood up, reacted quickly a few times with the photo on the table, and held a photo in his hand.

"Impossible! How could there be no such thing?"

The photo in Ding Fan's hand seemed to bring more confusion to him, and he turned around and took the trace examination report on the table in his hand and kept looking at it, but the more he looked at it, the deeper his brows wrinkled.

"What the hell are you looking for? Didn't you say it was just a normal little medicine bottle?"

Looking at Ding Fan's strange movements, Mi Mi was confused, and she really didn't understand, what was wrong with him, she looked shocked, and she didn't know what he had found.

Just when she was asking questions and wanted to ask clearly, Ding Fan suddenly raised his head and looked at her with strange eyes

, suddenly asked: "Do you remember what the sip of water tasted when you ate and drank? Is there a spicy taste, the taste should not be very big, but a little light?"

Mi Mi never dreamed that Ding Fan would ask such a question after going crazy for a long time.

Originally, she had tried her best to forget the disgusting smell at that time, so she finally came out of the toilet.

God knows how many times she has brushed her teeth and rinsed her mouth for such a long time, and now she still feels a little like a corpse in her mouth, Ding Fan Isn't this a pot that can't be opened?

"Uh...... Ding Fan, you did it on purpose!"

Deliberately?

Ding Fan looked at Mi Mi with a confused expression, and was still a little aggrieved in his heart, he just asked if the water he drank in his mouth at that time had a spicy taste, what did it become intentional?

"I'm just asking you if there's a weird medicinal smell, similar to a spicy medicinal smell. ”

Ding Fan suddenly remembered that Mi Mi had indeed drunk this sip of water on the ground before, but after all, the water was a corpse that had been soaked for an unknown amount of time.

Speaking of this now, eighty percent of her heart will be disgusting!

So I hurriedly wanted to explain, and even feared that I couldn't explain clearly, so I shook the medicine bottle in my hand twice.

Fast-acting heart pills, many people have smelled that taste even if they haven't eaten it, to be honest, it's still a bit pungent smell, as long as it's a person who has smelled it, basically you can remember it for a lifetime.

So after understanding what Ding Fan meant, Mi Mi gradually calmed down, rolled her eyes and threw it to him, sat on the side and endured the churning feeling in her stomach, and recalled the taste in her mouth at that time.

How painful this process is, even if Ding Fan doesn't experience it, he can see it from Mi Xiaomi's face.

But in the end, Mi Xiaomi's answer turned out to be to shake her head, and told Ding Fan "no" with great certainty.

"That's not right, Tong Lihua has a heart attack, she should always have this medicine on her body, but this medicine bottle is empty, you said that the water in the basement at that time had no taste, which is a bit strange, and no residue of medicine was found at the scene. ”

For this suspicion, Ding Fan asked her to recall her painful experience?

When Mi Mi knew all this, she almost hated Ding Fan to death, and God knows how uncomfortable it was for her to recall everything she had experienced below at that time.

"Does it have to be? Can't it be that Tong Lihua forgot that the medicine on her body has been eaten?"

What kind of suspicion is this?

The elderly are more likely to forget things, which is a reasonable possibility, if the old people forgot about it at that time, wouldn't it work?

"Absolutely impossible, Tong Lihua's life is very rigorous, I have seen her room, the whole room is not only clean, but also the daily necessities in it are very planned, all the medicine bottles are well organized, such a person will not put an empty bottle on his body, he has not found it yet, and there is spare medicine in her room. ”

Speaking of this, Ding Fan's later words obviously don't need to be continued.

Because Mi Mi was stupid and thought of the problem, this bottle of medicine was not originally empty at all, but someone deliberately poured out all the medicine inside, deliberately leaving an empty bottle on her body.

At that time, when Tong Lihua was ill, she should have wanted to take medicine from her body, and she obviously had this time.

But in the end, I found that the medicine on my body had already become an empty bottle, and in the last period before I died, I suffered a lot of illness.

The most important thing is that some time before death, the deceased also experienced a painful mental blow.