Liu Da still decided to file a case for investigation, I gave Wu Haoyu vomit and blood samples, and hurried to the small supermarket in Liqiang. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

Liqiang's small supermarket is located in the north of the city, which is another migrant worker area, the location of Liqiang's supermarket is good, in a T-shaped intersection, the flow of people coming and going is not small, it seems that the business is still good, but this kind of place, the streets are full of small shops, and the competition is still very fierce.

Ling Fei and I were the first to arrive at the scene, and Xiao Wang from the police station guided us to park the car in a remote corner, and we followed Xiao Wang to the small supermarket with the survey box.

The small supermarket is not large, only about 20 square meters, and the entrance is the cash register, followed by rows of tight shelves, on which the goods are dazzling, daily necessities, food, stationery...... In fact, it is a grocery store, and now it is all a supermarket.

There is a small staircase on the right side of the supermarket, above which is the place where the strong sleeps, and below is the kitchen and bathroom.

I entered the door and asked Xiao Wang, "Isn't this strong wife here?" ”

Xiao Wang said: "Liqiang has no wife now, his wife died three years ago, and Hearing Qiang said that his wife originally had a chronic disease, and then there was an outbreak of illness and she died. ”

I paused and asked, "What is his wife's disease?" ”

Xiao Wang said: "I only know so much, I didn't ask about the specific disease, anyway, I think it was all three years ago, so I didn't care too much, if the Su forensic doctor needs it, I have time to ask again." ”

I said, "Okay, let's get a chance to find out." ”

Liqiang's wife died of illness three years ago, and her daughter Xiuxiu was in a coma for unknown reasons last night, is it just a coincidence? I asked myself in my heart.

I took a cursory look at the shelves in the supermarket, especially in the food section, biscuits, instant noodles, milk, shredded mustard......

The food category is very complete, I paid attention to the various brands, and walked to the kitchen, the kitchen door was too small to be smaller, I put on gloves, pushed open the wooden door, walked in to see, it was just some ordinary utensils, there were oil stains everywhere, it looked dirty.

I didn't see the leftovers, so I looked at the trash can, fortunately, there were some residues in the trash can, and I had to extract them back for Wu Haoyu to inspect later.

Ling Fei also followed me to look at all corners, I hadn't yet constructed an investigation plan for this scene in my mind, on the one hand, because the cause of Xiuxiu's coma had not been determined, and I felt that if a large-scale investigation and extraction was carried out all of a sudden, the inspection work might not be able to keep up, on the other hand, I had just arrived at the scene, and I felt that this grocery store was chaotic, and I didn't know where to start.

In fact, I have seen a lot of this kind of case before, and the focus is to find valuable items for inspection as the first priority, but Xiuxiu and Liqiang ate at the same time yesterday, so these things in the kitchen, if they are extracted and inspected for half a day, there is nothing in the end, and it is a waste of time not to say, which may delay the process.

I asked Ling Fei: "Look, what is the key point to grasp at this suspected poisoning scene?" ”

Ling Fei said: "This is the first time I have investigated this kind of scene, and there is no theory in the book, I really don't know, there are no corpses at this scene, why is it also under the management of the forensic doctor?" ”

Also, there is no introduction to this aspect in the forensic book, this is the specific details of the work, should belong to the category of experience, not to scientific theories, specific problems are to slowly accumulate experience in specific work, when I first went to work, to any scene, whether there is a corpse or not, are at a loss, I don't know which step to start the investigation of the scene, even if I am now independent investigation, I will often go to a scene, doubting whether every step of my work is valuable.

But when it comes, you have to make a choice, don't you? Many things are like this, the choice may succeed, but it is also possible to fail, every step of the site investigation is a choice, it is a step-by-step choice that finally narrows down the scope and finds the breakthrough point.

I said: "As long as there is something related to human injury or death, it is all under the control of our forensic doctor, although Xiuxiu is only in a coma, but at present, as you said, the cause is unknown, and it is very likely to be poisoning, and if it is poisoned, it may be poisoning, so isn't that our forensic business?" ”

Ling Fei said: "Also, I think it should be to find the source of the poison at the scene." ”

I said: "That's right, the source of the poison is the key to this scene, only by finding the source of the poison, can the matter be analyzed, however, Wu Haoyu's side is still testing, whether it is poisoning has not been determined, all our current investigations are only based on assumptions, regardless of Wu Haoyu's side, the work is actually the same." ”

It took two hours, I roughly browsed the corners of the supermarket, only the small room on the top of the stairs was not seen, the items on the first floor do not seem to have too many surprises at present, the food packaging on the shelves is complete, and it is being sold, if there is a problem, then the coma may not be Xiuxiu alone, those food scraps in the trash can in the kitchen, it is estimated that it is also the leftover that Liqiang and Xiuxiu ate together, and it is not easy to say now, so I can only extract it back and test it.

How about a small room? I thought, I climbed up the stairs to the small room, in fact, it was not the second floor, it was just a small attic, I walked in, it was not very small, there was a seven or eight square meters, there were beds, wardrobes or something, and a small table, on the small table was placed the textbooks of primary school students, it is estimated that Xiuxiu usually writes and does homework on this small table.

Suddenly, a milk carton on the small table caught my attention, I picked it up and looked at the brand and production date, remembered that there was also the same kind of packaging on the shelves on the first floor, and put it back on the table.

Ling Fei also picked it up and looked at it, and said, "If Xiuxiu was poisoned, this milk is a good poisoning item." ”

I said, "yes, I'll take it back and test it then, I think this scene looks simple, but in fact there are hidden crises everywhere." ”

Ling Fei said, "Teacher Su, aren't you scaring me?" Is it so scary? ”

The mobile phone rang, and as soon as I saw that it was Wu Haoyu's phone, I said, "Look, the first crisis has appeared." ”

Wu Haoyu said: "Su San, the same poison was detected in Xiuxiu's vomit and blood samples, and the main ingredient was a rat poison called rat music sold on the market. ”

I was shocked, I was really told by the doctor, it was really poisoned!