Conference Room No. 1 of the Criminal Investigation Detachment. Liu Guodong is reporting on the current investigation and inspection.

"First, regarding the identification of the first deceased, there is still no result in the comparison of fingerprints and DNA information."

"Yesterday afternoon, we extracted trace physical evidence from the first corpse, and this morning the things have been sent to the technical appraisal center of the provincial department, and the results will be available tomorrow."

"Did the physical evidence survey around the scene find anything?" Surveying the perimeter of the scene is a fixed process that must be carried out in every homicide.

In the course of committing the crime, the murderer is likely to leave behind his own dander, hair or other physical evidence.

Liu Guodong shook his head: "We collected a total of 126 pieces of physical evidence around the scene yesterday, and all fingerprints and DNA samples have been collected. ”

"Lu Chuan is comparing the collected fingerprints, and there are no major discoveries yet."

"After the crime this morning, we did another meticulous survey of the one kilometer around the scene, and this time collected 36 pieces of physical evidence."

"Most of this physical evidence should have been added from yesterday afternoon to now, and we will strive to complete it today." The current survey is not sweeping, and there will always be a little omission in the large-scale survey.

"And the footprints we found on the perimeter of the fence, which are the result of footprint analysis."

"Oh? Already done? Qin Yong was a little surprised and took the footprint analysis report handed over by Liu Guodong.

Liu Guodong nodded: "After Xiao Lu came back, he analyzed the footprints as soon as possible. ”

"The suspect, an adult male, is 1.84 meters tall, weighs about 100 kilograms, and is between thirty-five and forty years old." Compared with yesterday, Lu Chuan and others analyzed that the suspect's height was more than 1.8 meters in height based on the height of the fence, and this time the conclusion was more refined through the analysis of shoe prints.

"The outer edge of the suspect's footprints is more worn than the inner edge, but the amplitude is not large, indicating that the suspect has a weak outer figure-eight leg shape." In fact, the vast majority of human body shapes have some flaws.

For example, a slight outer figure, inner figure or knee inversion is also a common looped leg. The formation of these leg shapes has the effect of genes and the influence of acquired development.

For example, calcium deficiency, irregular walking, etc., will cause minor deformities of the lower limb bones. The judgment of each person's leg shape can be concluded from the analysis of the wear and tear of shoes worn for a long time.

The information here in the current investigation office is still being sorted out, and Liu Guodong's report is temporarily over. Qin Yong's gaze looked at Wang Changjiang, and the other party coughed lightly.

Lao Wang had a good rest yesterday, because the body was frozen and did not soften, so he could not do an autopsy for the time being: "The first corpse has been thawed, and an autopsy will be done later." ”

"As for the second corpse......," Wang Changjiang paused, "an adult female, similar in age to the first corpse, should be between twenty and twenty-five years old." ”

"The cause of death was mechanical asphyxiation, and judging from the size and shape of the neck scar, it should be the same person as the murderer of the first corpse." Liu Guodong nodded, this point was also confirmed by him.

The choke marks on the necks of the two corpses are similar, and it is inferred that the size of the murderer's palm is basically the same.

Moreover, when the other party strangled the victim, he wore gloves. Lu Chuan did not find any fingerprints on his neck.

"The body had no premortem injuries, and no traces of humiliation before or after death were found for the time being." The blood stains on the snow were dripped by the murderer after the body scraped against the wall and damaged the skin during the process of throwing the body.

From the shape, size, and friction marks of the wounds, compared with the residual blood stains on the wall, it can be determined that it was left after death.

The scars left by a person while he is alive are not the same as the scars left after death. Because the body is active, the blood is circulating, and there will be an obvious defensive response to injury before death, which is called the life response in academic terms.

This defensive response refers not only to the active defense of the injured person, but also to the physical activity response of the injured part.

Such as bleeding, clotting, muscle twitching, cell division during healing, and so on. Among Lu Chuan's system rewards, in forensic pathology, there are identification and analysis skill cards for ante-mortem and postmortem injuries.

"Later we will perform an autopsy on the first corpse, and we will be able to report it in the evening, and the second corpse will have to wait for tomorrow's autopsy." …… Survey Office.

Lu Chuan, who has completed the analysis of shoe prints, is comparing the fingerprints found on the physical evidence collected around the crime scene yesterday.

The advanced fingerprint identification and analysis skills allow Lu Chuan to have a very fast speed when dealing with this level of fingerprint comparison.

It only takes about three to five minutes to process a fingerprint, and after returning from the scene and analyzing the footprints, Lu Chuan has already completed half of the work.

Yang Sen and Lao Bai are processing the physical evidence brought back from the scene this morning.

"What does this murderer think, throwing corpses twice in one place?" Lao Bai has been a criminal police officer all his life, and he has never seen any cases.

Twenty years ago, in the Rainy Night series of murders, the murderer specialized in killing people on a rainy night, specifically picking out a young woman in red on a bicycle.

That year, seven people were killed, and the entire Haizhou City panicked. In the end, let alone going out on a rainy day, no woman even dared to wear red clothes.

Seventeen years ago, in the case of corpse mutilation in the southern suburbs, the murderer killed four people at the same time, a family of four was wiped out, and all the corpses were chopped up, put into woven bags and thrown into sewers, garbage cans, and septic tanks.

There were a total of twelve bags, one of which Lao Bai took to investigate, four left feet. Poisoning case 12 years ago, arson and burning of corpses 8 years ago...... Lao Bai's experience fully illustrates what it means to live for a long time.

But this time, the murderer threw his body in the same place continuously, and Lao Bai saw it for the first time. Yang Sen shook his head while scanning his fingerprints: "The murderer did this, there is a high probability that there is a deeper reason." ”

"Either he's psychopathic, or he's obsessive-compulsive, or there's something else that forces him to do it."

"Normal people...... I can't do this. "Didi! The two were chatting when the DNA testing instrument next to them buzzed.

Yang Sen looked back: "The DNA test results of the second corpse came out, and I went to the computer for a run." "The fingerprints of the second corpse have been collected by Lu Chuan at the scene of the corpse.

After returning to the office, I immediately carried out an appraisal analysis, but it was a pity. As with the first body found yesterday, the fingerprint comparison was unsuccessful.

In the fingerprint system of the Haizhou City Criminal Investigation Detachment, there is no target person. The face comparison is in the missing doorway Curry, and there is no corresponding information.

It stands to reason that in this case, there is a high probability that there is no possibility of comparing DNA information for comparison.

Because of the DNA information database of the Haizhou City Criminal Investigation Detachment, 90% of its owners have had their fingerprints collected.

There is no fingerprint comparison, and the probability of successful DNA information comparison is not too great. However, there must be a reason for the existence of the criminal investigation process.

Bite! Yang Sen had just entered the DNA information of the second corpse into the system and started the comparison, and before he turned around, the computer came with a prompt sound of successful comparison!