The forensic doctor first released the autopsy photos of the three cases, and a large part of the elements of the merger were found from their side.

"The marks left by the restraint wounds are highly consistent and should have been caused by the use of the same tools, especially the murder weapon of the deceased, presumably a rope such as a braided rope, and the wounds of the three deceased were almost identical, although it is not certain that it is the same rope, but it is very likely to be the same rope. ”

"Judging from the depth of the wounds and the marks left on the knots, the three cases should have been committed by the same murderer; plus the previous two cases found no sperm in the bodies of the deceased*, the degree of overlap is very high; in addition, the residue of sleeping pills was detected in the bodies of the three deceased, and they should have been taken to the scene of the crime by the murderer after falling asleep before death. To sum up, the forensic doctor believes that the cases can be joined. ”

The trace examination was then supplemented with relevant proof.

"The victims of all three cases were found in the suburban woods, lying on their backs, their hands naturally on the sides of their thighs, and traces of struggle were found on the ground, but the deceased was treated peacefully. ”

"In the Wei Zishan case four years ago, the body was dumped in the woods by the Jinshui River, because it had rained before the crime, and a clear and comparable footprint was collected at that time, and it was speculated that the murderer was around 175 in height. In the Liu Sisi case in the early hours of this morning, according to the deceased's torn skirt, it is speculated that the murderer's height is between 173 and 176, and the two cases can verify each other. ”

In addition, according to the remoteness of the place where the body was dumped, it is speculated that the murderer had a means of transportation, and if you take into account the Ye Xiaojia case in Meishi City, you can basically rule out short-distance vehicles such as motorcycles, and it is likely to be a car. ”

Wang Tao said that he was a little far away, and Ying Mingyu signaled him to stop here.

"Let's talk about the three deceased first, and see if there are any commonalities. ”

Bao Zhan stood up in response and reported with a notebook: "The deceased Liu Sisi, who is now 20 years old, is studying English at the Normal University of this city. According to relatives and friends, she is a very wide-ranging, very intelligent and erudite girl, with a gentle personality, not lively or introverted, and not many friends but not many. ”

"Ye Xiaojia two years ago, when he died, was twenty-five, and did not participate in work, but took the postgraduate examination at home, and after graduation, he did not take the exam for three years. According to the local police interview, she is a relatively lazy housegirl, because she is going to study at home because of the relationship between the graduate school entrance examination, and there are not many friends who come and go daily. ”

Ying Mingyu himself added the circumstances of the deceased in the previous two cases: "As for Wei Zishan four years ago, she was only 18 years old when she was killed, and she was admitted to the university in this city and did not have time to report it...... She was the youngest of the three deceased, and according to the survey, she was a lively and cheerful girl, and she was very popular among her classmates and had many friends. ”

It sounds like the three deceased don't have much in common. The medical examiner and the scar examiner were surprised.

"I've been taking the graduate school entrance examination for three years and I'm still taking the exam, that Ye Xiaojia is just trying to escape from reality because she can't find a job, right?" Liu Minmin said irrelevantly.

"It's not surprising that my classmates have been taking the exam at home for five years, but they still got in. Beautiful whispered.

Ying Mingyu glanced at the two of them, knocked on the table and suspended the free discussion.

"The three deceased have one thing in common, they are all girls who have not yet entered society, they are very simple and easy to deceive, and they are easy to be lured out. ”

Hearing him say this, Fan Hua replied casually: "That's right, so the murderer may be a person with outstanding appearance like Captain Ying." ”

"Not necessarily, it's very popular to meet netizens now, maybe the murderer just posted a handsome photo like Captain Ying and caught the deceased. Wang Tao responded positively.

Ying Mingyu sighed, it seems that Fan Hua is in a good mood after having a fiancée, and his temperament has assimilated with his bad friend.

"Serial killers usually choose their targets according to their own preferences, but the three deceased people do not find any similarities in appearance, the only thing they have in common is that they all have long hair. It's the same when it comes to dressing, no clothes, accessories or makeup, not even nail polish and underwear. ”

"So, from your side, there is no point that can be merged?"

Ying Mingyu said back to the commonality just now: "At present, there is only this one I speculated, and then we will learn more about their interests and hobbies, circle of friends, and find out the overlapping parts." ”

When investigating as an independent case, you can only start from a single line, and it is inevitable that some things will be missed, and if you look for similarities, you may be able to find something.

"In addition to this, we will continue to look for similar cases in old cases, including those that have already been solved. We will also contact local police, including other provinces, to provide relevant cases for screening. ”

"Now that the merger has been confirmed, let's talk about how to investigate from the clues we have so far. Luo Yin snatched Ying Mingyu's next words.

After all, it was the province that recruited them to lead the investigation, and it always made Captain Ying work hard.

Ying Mingyu didn't interject again, and quietly watched his next performance.

"Now we have to find out the common ground between the three deceased as soon as possible, and hobbies are the best direction, especially what Section Chief Wang said just now, the online dating circle is likely to be a breakthrough, and everyone should pay more attention. ”

After Luo Yin finished speaking, he saw that Ying Mingyu did not object, and turned around the person next to him: "Soldier, what do you think about you?"

"I agree with what Section Chief Wang said just now that the murderer had a means of transportation, and there are contradictions in combination with the forensic doctor's speculation on the murder weapon. Starting from the scene of the crime, the deceased's home address and the time of the crime will be used to determine the means of transportation, and then the forensic doctor will work with the forensic doctor to find the murder weapon that can be matched, and maybe the key to solve the contradiction will be found. ”

Li Lianbing looked at Du Xiuxiu beside him when he spoke, and the girl nodded lightly in agreement.

"We will work with Forensic Doctor Fan to find out the matching type of murder weapon as soon as possible and provide you with the direction of criminal investigation. ”

Du Xiuxiu finished speaking and looked back at the teacher.

"Chen Chen, can you do the first psychological profile now?" Teacher Ji gave him a problem.

Chen Chen thought for a moment and opened his mouth: "There is not much information, I can only make simple speculations, give everyone a reference, and don't limit my thinking." ”

"The murderer should be around twenty-five years old, less than thirty years old. Well-educated, with a stable and high-income job, may have been born in a scholarly family, and have a good demeanor. Has a slight cleanliness fetish and is very respectful of women. A few years ago, after the murderer became sexually mature, he suffered a setback in the relationship between men and women, triggering psychological damage that led to the murderous behavior. ”

Fang Jinshi interjected at this time: "No sperm does not mean that it cannot be humane, if the murderer just has a relationship with the woman, he should not find the problem." I think the murderer is most likely childless after marriage, went to the relevant examination, and then had some irreconcilable conflicts with his wife, which led to psychopathology. ”

Chen Chen glanced at Ying Mingyu for some reason, although she was already pregnant, someone must have experienced some hardships at that time.

"I agree with Sister Fang, has there been any adjustment in the age of the murderer?" Ying Mingyu felt that the direction of the investigation in Meishi City at that time was right.

Chen Chen thought for a moment: "Twenty-five to thirty years old, it can't be bigger." ”

"What is the reason?" Ying Mingyu really couldn't think of it, if the murderer was married, he would still be found to be sick, considering the increase in the average age of male marriage now, and the first case found so far was four years ago, the murderer should be over thirty years old.

"Frequency of crimes. Chen Chen replied directly, "Men over the age of 30 have a completely stable temperament, and once they start committing crimes, generally speaking, the interval between crimes will not be longer than six months, but at most one year." This time, the murderer committed the murder during the summer vacation in July and August, even if you count the cases that have not been found, I feel that there is a lot of uncertainty, and the murderer has great doubts about whether he should continue to hold a lot of doubts, not quite like a mature and stable man. ”

"We'll help you with the material as soon as possible, so that you can make a more complete profile. After Ying Mingyu finished speaking, he continued, "Nail, arrange for people to check for eligible patients with sperm in all hospitals in the city, including private clinics that can see andrology, starting from those diagnosed four or five years ago, and moving forward." ”

"Do you want to inform Meishi City to also check the information of patients from four or five years ago?" Ding Yuan asked more.

"Not for now. Ying Mingyu, Chen Chen, Luo Yin and Fang Jinshi said similar things at the same time.

"Quartet, you guys. Wang Tao joked with a smile.

"The first case found so far and the latest one are all in the provincial capital, considering Chen Chen's psychological profile of the murderer, even if other related cases are found later, the probability that Meishi City is the city where the murderer is located is very small. Luo Yin's kind-hearted brother explained to everyone.

"We also want everyone to help use their imagination and speculate on the type of murder weapon. Fan Hua took the initiative to seek attention, "I really can't think of what kind of thing this width of braided rope is, it's not right to say it's an ornament, and there is no match when it comes to daily necessities." ”

"Could it be the kind of bracelet that folds up, the kind that can go around many times?"

Everyone quickly brainstormed.

"It's also possible that it's a decorative belt with clothes, so it's unique?"

"Or is it a woven bag of a tote bag, the kind that can be carried so it is longer?"

"Maybe it's a strangely shaped head rope, the kind that is tied in a circle?"

Fan Hua recorded everyone's opinions one after another, no matter how unreliable it sounded, it was possible to open your mind and find out the truth.

"Captain Ying, do you have any opinions?"

Ying Mingyu ran through some things in his mind, but he denied himself, and when he heard someone call him by name, he coughed and replied in a low voice: "I'll ask about it when I have time." ”

Someone often paints all kinds of things, and this kind of existence that needs to be imagined out of thin air may be able to restore it with her paintings.

Liu Minmin looked at the person sitting next to her who said this in confusion, not quite understanding what he meant, but the others had no doubts, and seemed to take it for granted.

"Then let's speed up and solve the case as soon as possible. Teacher Ji ended the first meeting.