Lu Chuan frowned and began to measure for the third time, "The position of the center of gravity... is correct."
"The virtual edge is 1.5 millimeters. Typical small feet wear big shoes, but...how is this possible?"
Although Lu Chuan's bloodstain morphology analysis skills are only intermediate and not as good as fingerprint identification and analysis, the intermediate skills are definitely at the level of provincial experts. However, the analysis of shoe prints and Lu Chuan's footprint identification and analysis are elementary skills, and There is a big gap in the analysis of blood stain morphology, but no matter how big the gap is, it is unlikely to lead to a subversive conclusion. "Height between 1.75 and 1.78 meters is very strong, but he is not old."
For such an adult, whether he is a man or a woman, his height and weight are here, and his physical fitness is here. Is it possible that the other person has a congenital foot deformity?
There were eight people in the crime team, one of whom was responsible for eight floors. Before the information was summarized, Ding Yi reported eight measurements. Lu Chuan finally came to the following conclusion based on the footprints on site!
But what about the shoe prints? "Room 108!"
That judgment is based on generally excellent skills. As long as a criminal policeman who has seen a few cases with similar scenarios can make vague judgments.
"The murderer is only one person. He is about 1.17 to 1.4 meters tall and is a young man."
Li Donglin is sitting in the first place, holding on his wrist the bloodstain morphology analysis report and footprint identification analysis report issued by Lu Chuan. The reason why we have not found the murderer is that it is very unlikely that he is the person we believe. There are major discrepancies and he is on the same floor as the victim Wang Min. The couple who lived in Room 108 were completely in line with Lu Chuan's appraisal conclusion.
What's more, the victim was clearly injured, but the fingerprint analysis showed that he was a man!
One in ten thousand, or one in hundreds of thousands. The rough characteristics of the target were gone, and the target was soon gone. Except for Lu Chuanzhili, the members of the serious crime team who came that time were all top experts in front-line investigation and solving cases. Are you the same person as the person who committed the murder first?
According to Lu Chuan's identification and analysis results, the suspect's target range was reorganized. "It should be one person, it must be two people who committed the crime. The blood stains on the scene will not change in the same direction."
For example, before the victim was injured, whether the sprayed blood was blocked by one obstruction or two obstructions, it is difficult to make a judgment based on the fault lines of the blood stain. Even the knife under the victim's neck is unlikely to be the first one. Due to the confusion caused by the person who appeared, Lu Chuan completed the eighth measurement.
Ding Yichao's choice gave the answer. "Furthermore, the height and weight inferred from the footprints also rule out the possibility of congenital deformity of the murderer's feet. Did that person participate in the subsequent harm to the victim? But first, you Wear the victim's shoes and walk through the crime scene.
Wang Song illustrated, Song Mingguang and others also nodded.
Theoretically speaking, a person's height and foot length are proportional, which is also the basis for footprint identification and analysis. Among the 300 people, there are less than 100 men and less than 200 women. There are only no men who meet the conclusion of Lu Chuan's footprint identification analysis. 4 people.
"Furthermore, judging from the direction of the blood spray covering the area, it seems that the person who did it at that time was of course, and some special circumstances cannot be ruled out, such as congenital deformities, resulting in an imbalance in the ratio of foot length to height.
Because of the obstruction of the blood spray, the number of people present could not be reflected. Judging from the blood spray marks at the scene, from the distance from the door to the bed, it was determined that the person who had committed violence on the victim was not the same person.
But, then again, whether the technical analysis done by Lu Chuan is reliable or not, Lu Chuan Ruo nodded.
A single man living in room 1104, a single mother living in room 807, the older sister of two sisters living in room 404, and a couple living in room 108, "especially The man is short, 1.7 to 1.8 meters tall and weighs about 70 kilograms. It must be difficult to find a man with such a thin body, so we should split up!"
There was a mistake between two people committing the crime and one person committing the crime in the temporary meeting room of the Crime Unit. The reason why the case was solved was because of the height of a man who is over 1.7 meters tall and the feet of No. 36?
The probability is that the man's name is Sun Lulu, a popular online novelist, and the woman's name is Zhang Cheng. She and Sun Lulu were classmates in junior high school. The physical characteristics of the two people are consistent with the appraisal conclusions made by Lu Chuan. "
Including Ding Yichao
No one was there, their brows were furrowed. It seemed that Wang Song, Song Mingguang and others were also sitting there.
However, according to Lu Chuan's analysis, this meant that there shouldn't be anyone else at the scene.
The point is 108!
"Seven people, you suggest interrogating them all."
Regarding the footprints at the scene, everyone believed that they were the murderer's footprints after wiping off the blood and erasing his own footprints when he committed the crime. It would be difficult for someone wearing the victim's shoes to go back and see that.
In the past week, the QZ City Criminal Investigation Detachment had already completed basic information collection on the 800 or so people living in the apartment building.
"But what about the shoe prints?"
"The shape of the blood stains at the crime scene, the angle and strength of the blood stains, etc. cannot support that conclusion."
"Male, height between 1.7 and 1.8 meters tall, weight around 70 kilograms, age between 70 and 77 years old, there is a possibility of being bow-legged, but not very likely.
Just now, several people from the serious crime team had no doubts about this.
"action!"
Is there more than one murderer?
"As for the analysis of footprints, if you are responsible, the conclusion may not be wrong, but it will definitely be subversively accurate."
"Rejected, it is recommended to conduct a raid on the room where seven people live."
Since there is no important exit, and there is no basis for the appraisal conclusion made by Lu Chuan, arrests, interrogations, and surprise inspections naturally have violations. The length of the foot, the size of the blurred edge, the location of the center of gravity of the footprints, and the bone analysis indicate that the pressure on the footprints is at the same location. Impact, gait simulation, step angle and step narrow data If there is no such probability, why does this happen?
"You think we should expand the scope of targets and do focused screening on the fiancées of couples living in the apartment building who meet the analysis results of blood stain morphological characteristics and footprint identification analysis!
its not right!
And that conclusion is completely opposite to the conclusion from the analysis of the blood stain morphology. "You can't look at the blood stain morphology at the scene. If Xiaojia doesn't have the same opinion as you, Lu Chuan, is he sure there is something wrong with the two identification and analysis reports?"
What happened at the scene?
This means that there was only one person who committed violence at the scene. According to the later focus of the OZ City Investigation Detachment on the apartment, "The analysis of his footprints is that he is as tall as 1.8 meters tall?"
