"Du Jiang, didn't you find any valuable fingerprints on these things?" Chen Yanxi did not go to the box to find clues, but continued to look at the switch controller of the electric blanket.

"Eldest sister, it was the scene of the fire, it burned so badly, how many fingerprints were burned, so far I haven't found it." Du Jiang said regretfully.

Chen Yanxi didn't answer, but continued to look at the switch in a daze, and after a while, she suddenly said, "Du Jiang, have you cleaned the surface of this switch, or is it so clean?" ”

"Of course it's like this, it's good that I can find these from the wreckage, where is there time to wipe you clean, you ....." Du Jiang seemed to remember something, and quickly stopped his mouth.

"Then if the murderer planned the fire and knew that the house would be burned clean, then is it possible that he did not wear gloves when committing the crime, and suppose that as I said, the electric blanket was the ignition point, the fire burned, swished, burned off the power supply of the electric blanket, the circuit was on fire, and the wires at both ends of the switch were burned, and this beginning lost its support and fell to the ground, will the fingerprints left by the murderer on it not be destroyed."

After hearing her assumption, Du Jiang hurriedly stopped what he was doing, took the switch in Chen Yanxi's hand, carefully searched it with a multi-band light source, and observed it four or five times in front and back, and finally he shook his head regretfully: "Sorry boss, Yanxi, no." ”

Chen Yanxi looked at the switch and sighed: "But I think this is a very important clue, you can see that this switch is turned on, which means that someone deliberately turned on the electric blanket before the crime, if he didn't wear gloves at that time, he would definitely leave traces on it." ”

She was a little emotional, maybe as a forensic doctor she didn't have the right to interfere too much in the case, but she had the right to provide clues, and she was convinced that it would be a valuable clue.

Mu Haoran patted her on the shoulder: "You are too nervous, relax, let's start looking for clues from other aspects, don't be too entangled, Du Jiang has tried his best, you have to believe in science." ”

Science, this word reminded Chen Yanxi, she took Du Jiang's hand and said: "Du Jiang, make a 502 smoke, maybe there will be clues." ”

"It's too difficult, if his hand is directly pressed on the grooved push-pull switch, under the action of friction, there may not be traces." Du Jiang knows very well how difficult it is to do 502 fumigation on the surface of this switch, and the probability of success is almost zero.

"If he holds the surface of the object and pushes the beginning, then there is a possibility that there will be traces of fingers or palms on the back." Chen Yeon-hee offered a rebuttal.

"Yanxi, I have a lot of cases at hand, and there are too many appraisals that have not been done, I really don't have time to do 502 for you, if the probability is high, it's okay, this topic is basically an impossible task!" Du Jiang was obviously a little embarrassed because he had too many things at hand.

"Mu Haoran, do you believe me?" Chen Yanxi turned around and asked Mu Haoran.

"I believe in every one of my comrades." Mu Haoran said firmly.

"Du Jiang, I'll do this experiment." Chen Yanxi stretched out his palm and asked Du Jiang for the key to the laboratory.

"Okay, then you've worked hard, even the interns went out on duty today, or I'll send you someone to help you." Du Jiang took out the laboratory's chip card from his pocket and handed it to Chen Yanxi.

Chen Yanxi took the key and said to Mu Haoran, "Are you interested in taking a look?" Experiments can take hours, and the process is even more tedious than dissection. ”

"It's okay, but I have to take this group of treasures over to relieve a little pressure on the little comrades, Du Jiang, have the numbers of these physical evidence been recorded, I'll take them first."

"It's all copied, you can take it and find it, just sign it for me." Du Jiang handed over the register to Mu Haoran for him to register.

Then he and Chen Yanxi put on protective clothing, shoe covers and protective gear and walked into the laboratory. Chen Yanxi hung the switch on the special smoked display cabinet, and she looked at the evidence box full of fragments of items: "Are there any fragments that have not been burned clean on the surface, let's do it together, one sheep is also driven, and two sheep are also released." ”

Mu Haoran put on his gloves and put the contents on the workbench one by one, looked at them carefully and said, "No, the rest is the fragments after the explosion and burning, and there can be no fingerprints, so I can count on it now." ”

"Do you need to learn this principle?" Chen Yanxi asked.

"Of course, I found that our group is all generalists in the business, and even the in-house Xu Ruoyuan, who I didn't notice the most, is a master, and I won't learn how to lead everyone to work!"

Before he got in touch with everyone, Mu Haoran felt that he had enough brains, after all, he had learned a command major in the past few years in the military academy, and he was a scout, and then he mixed with the special forces for several years, so he should know everything about the investigation and counter-investigation of criminals.

He also has some understanding of the criminal environment in the high-tech environment of the new era, but now it seems that he understands it only a drop in the face.

After Chen Yanxi was ready, he turned on the button of the fumigation cabinet, the equipment began to operate, and the fumigation experiment officially began.

"502 glue fumigation method is a chemical manifestation method, 502 glue is based on a-cyanoacrylate ethyl ester as the main body, containing a small amount of hydroquinone and sulfur dioxide and other animerizing agents, commonly known as 'super glue.' ”

"The cyano and ester groups it contains are very electron-absorbing, and it is easy to polymerize anions under the initiation of water or weak alkali, and finally form a solid polymer to make the handprint visible, so if it encounters the handprint part of sweat on the surface of the object, the a-cyanoethyl acrylate monomer will polymerize to form a white solid polymer, thus showing the handprint. It is suitable for revealing potential handprints on non-porous objects, metal, glass, plastic, enamel, etc. ”

Chen Yanxi talked a lot, and when she turned around, she saw Mu Haoran biting the cap of the ballpoint pen and writing hard there, she smiled and said: "You really remember, as soon as you hear that there is this method, you don't do experiments, why do you remember in such detail?" ”

"I'm afraid that I will be left behind by you, and I can't do it if I don't study!" What he said was true, and based on his observations in the past two days, he found that this serious crime team did not seem to be as simple as it appeared to be, and everyone here seemed to have an unusual experience.

"Chen Yanxi, let me ask you a question."

"Well, you say."

"I found that the configuration of this serious crime team seems to be different from that of other teams, I see that other teams have things to do surveys and major autopsies and have to come to our group to borrow people, for a squadron unit, our configuration is not too high-standard."

"You just found out! Two days ago, when my dad held a meeting with you, he may have said that the city bureau will dispatch units to do pilots, so that the second and third line of technical investigation and forensic medicine can participate in the detection of the case, instead of giving you the test results in the traditional sense, and you will go to find clues, the superior means that we can integrate the concepts of the three parties and find the truth of the incident in the first time, and our serious crime team has always been the top unit of the municipal bureau, and the top priority for the distribution of talents in major colleges and universities is to fall to us, it should be said that there is no shortage of talents here, What is lacking is the cohesion of unity, and what the superiors want is for us to communicate and integrate the clues of the case in the first time, so as to improve the efficiency and accuracy of case handling. ”

"Then according to this statement, our serious crime team has an innate advantage, compared to other brother units, at least we will not make a lot of trouble, as you said, we are not short of talents!" Mu Haoran is very pleased that he can work in such an excellent team.

"Not necessarily, you can also see, we are not short of talents, but we are in a shortage of people, even trainee police officers have been borrowed, in my father's words, talent is counted as one, all to my bowl, as long as it comes, I will not refuse." Chen Yanxi learned Chen Yongfu's tone to look good, and she really deserves to be his daughter.

Chen Yanxi and Mu Haoran were carrying out the work at hand while looking at the results in the smoked display cabinet, they were really tired, so the two of them chatted for a while to relieve the boring time.

Halfway through, Mu Haoran went back to the office to check the situation, and then returned and continued to look for clues in the evidence box.

"You know now what that kid is doing when he called us back, he doesn't have time, and someone is urging him to get results, he is asking us to find clues by ourselves, he just didn't provide us with inspection materials." After rummaging in the garbage heap for more than an hour, Chen Yanxi's eyes were about to be dazzled with a magnifying glass, but she still found nothing.

"Chen Yanxi, what do you think this is? Is it a fragment of glass? "Suddenly, Mu Haoran found a little bit of hard prickly hands in the pile of debris, he thought it was the glass after the explosion, but when he clamped it with tweezers, he found that this 'glass was a little dazzling.'

Chen Yanxi leaned over to take a look, and obediently: "What kind of glass is this, this is a diamond, brother." Chen Yanxi's eyes widened, she didn't expect that there was still a blind diamond in this pile of worthless construction waste, and after wiping it clean, it was not difficult to find that the price of this diamond would not be too low.

"Is there a woman at this scene?" Mu Haoyuan guessed.

"So far, it seems to be, and she seems to have hit something and knocked the ring diamond off her hand."

"It's a big deal now, so many comparisons haven't come out yet, and there is another diamond here, and the suspects have risen from one to two, if you can't close the case within five days according to your father's standard, I'm afraid your father will have to deduct my bonus for this month." Mu Haoran's tone was a little self-deprecating.

"It's okay, my bonus will be made up to you, continue to work hard, the Anti-Japanese War has been fought for eight years, where are we going, there are many clues, and the case can be closed quickly after forming a chain of evidence, don't complain, come on! I'm optimistic about you! noproblem

！ ”

......

At six o'clock in the evening, the fumigation cabinet began to stop running, and the fumigation results came out, Chen Yanxi shook Han Rui's shoulder excitedly and said, "It's successful, do you see it, there is a handprint." ”