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Chapter 1063: The Bloody Sword
Chapter 1063: The Bloody Sword
The moment Jiang Yuan stood up and picked up the remote control pen, Wang Chuanxing opened the PPT that he had prepared after staying up late.
Wang Chuanxing's PPT is not as simple as Liu Jinghui's own PPT, which is made up of circles. The fonts in Wang Chuanxing's PPT are changed according to different needs, and even the brightness and color of some pictures and fonts are slightly different, focusing on a proper balance of details and clarity at a glance.
Jiang Yuan pressed the remote control pen, and a photo of the scene immediately appeared on the projection screen behind him.
"The murderer left a lot of blood at the crime scene, but because there were three dead in a small space, the blood was obscured. This is part of the reason why the task force did not use blood analysis in the early investigation." Jiang Yuan first explained a few words for the task force. He is now a nationally renowned expert, and he should try to avoid punishing people with just one sentence.
The police officers from the Criminal Police Brigade wrote down Jiang Yuan's words quickly.
After a pause, Jiang Yuan continued, "Let's take a look at the usable parts. First, you can see that there is a narrow bloodstain here, which means it was caused by a sharp weapon. If you zoom in on the blood drop in the bloodstain, you can see that the tail of the blood drop is very long, which is a typical sign of rapid movement, indicating that the murderer either wielded the weapon very quickly, or the handle of the weapon was long."
While Jiang Yuan was speaking, he pressed the remote control pen again, and several photos were displayed one after another.
After the display, Jiang Yuan continued: "In addition to the photos just released, some bloodstains are actually hidden in the pool of blood. We cannot see the whole picture, but based on the uncovered parts, these leaked bloodstains, and some changes in the pool of blood itself, we can find more traces of weapons being swung."
Jiang Yuan didn't elaborate, but just released more photos.
These will later be verified by the trace examiners of the Changyang City Criminal Police Detachment. When it comes to the inspection and trial stage, the prosecution and the court will also re-read them using their own trace examinations. Finally, if the death penalty is imposed, it will be reviewed again by the High Court and the death penalty review stage.
The police now place more and more emphasis on evidence for this reason. Using evidence to solve cases is a relatively easy task for everyone, while other methods require more complex communication.
Yu Wenshu and others looked at the PPT in front of them blankly. Even Yu Wenshu could only remember what he saw at a glance. He could not remember things like pictures, let alone understand them.
At this time, a moving picture began to appear on the screen.
The little man in the picture is a stick figure, with clumsy movements and odd postures, but his routes and the wielding of his weapons are very precise.
"This is a GIF that Wang Chuanxing made after staying up late. It is used to demonstrate the murderer's killing sequence after entering the house." Jiang Yuan gestured and said, "When the murderer broke open the security window and entered the bedroom to start killing people, his first move was to chop the second victim, Qin Jijian, horizontally."
Jiang Yuan held the remote control pen, raised his arm slightly, and slid it slowly in the air, and then said: "He should be aiming at Qin Jijian's neck, and he has a very good grasp of the distance. The weapon in his hand should have just cut Qin Jijian's neck, making him lose his combat effectiveness instantly. This is a very professional technique. Without several years of practice, it is impossible to do this."
"What weapon was used?" Yu Wenshu didn't understand bloodstain analysis, but he could ask for the answer directly.
"It's a weapon similar to a samurai sword." Jiang Yuan said: "It has a long handle, is sharp, can be swung quickly, and is not very heavy."
"This is similar to our previous judgment." Yu Wenshu nodded.
Jiang Yuan continued, "After killing victim number two, Qin Jijian, the murderer moved sideways to the bedside and slashed victim number three, Gu Daxu, at least twice, but did not kill him immediately. Then the murderer retreated and controlled the distance. When Gu Daxu rushed over, he not only killed him with one slash, but also did not splatter any blood. Judging from the speed of the knife, it was basically not affected, which shows that the situation was completely under the murderer's control."
Jiang Yuan: "In the final stage, the murderer avoided the bloodstains on the ground and caught up with the female victim, Zhao Qian, who was running wildly. Zhao Qian should have begged for mercy at the end, but she was stabbed to death without hesitation. Whether there was hesitation can be seen from the thrusting and pulling of the knife. The murderer must have had a plan in advance, was sure of what to do, and was determined to execute it."
"Professional killer?" someone asked in a low voice from below.
"Even if a professional killer doesn't carry a gun, what's the point of carrying a samurai sword? Aren't they afraid of being caught?" Experienced police officers scoffed at this idea. Nowadays, the most strictly controlled weapons are not guns, but knives. Especially when the police station or patrol special police go out, the first thing they consider when they see someone is whether they are carrying a knife, and few people consider carrying a gun. And samurai swords are obviously controlled items, and they are easy to be noticed wherever they go. For professional killers, it is definitely too conspicuous, and it is not necessarily better than a dagger.
As far as the 303 case is concerned, the most difficult things for the murderer should be climbing walls and bending guardrails. Once he enters the room and starts killing people, the murderer is able to bend the guardrails. A kitchen knife has a similar effect.
Of course, he would have produced better results with a sharp weapon like a samurai sword. Not only did he kill the three men cleanly and neatly, he also nipped the expected little resistance in the bud. Even his clothes and shoes were clean. At least in the crime scene, he concealed himself as much as possible, and the effect was unusually good.
Jiang Yuan concluded, "The murderer is definitely an expert with a knife and has some practical experience. This can be seen from his choices of people. The first person he killed was victim number two, who was also the strongest and youngest of the three victims at the scene. He was a 28-year-old porter and still had a lot of physical labor in his daily job. He was the most likely to pose a threat to the murderer. Next in line was victim number three, a 31-year-old male, and victim number one, a female, Zhao Qian."
"Is he a competitive expert, or a professionally trained killer?" Another police officer asked a question he had kept hidden for a long time.
Jiang Yuan asked back: "What is the level of a professionally trained killer?"
"The kind in Kill Bill?" Someone laughed softly.
The atmosphere in the conference room became a little more relaxed, and Jiang Yuan smiled twice. It was common to work on a serious case for several months, and it was impossible to keep a stern face and act serious all the time.
"I don't know how to use a knife. However, from the bloodstains at the scene, we can see that the murderer has high physical flexibility, can make large movements, and has sufficient strength. In addition, he should be around 180 cm tall, with broad shoulders, a strong waist, and a long arm span." Jiang Yuan made this judgment based on the bloodstains in the bedroom.
This type of judgment yields slightly less information than footprints, but it is of a different type.
Just information like broad shoulders, long arms and a height of 180cm can significantly reduce the workload of police officers.
Based on Liu Jinghui's reasoning and Jiang Yuan's judgment, the number of people who intersect between the two should not be large.
After a few more words, Yu Wenshu made the decision and said, "Let's make plans in this direction and screen the people first."
"Um..." Liu Wenkai couldn't help but stand up and said, "Should we start with a secret investigation? After all, this case involves the privacy of many people. If things go wrong, some people may have to get divorced."
"Something has been done, so just get a divorce." Someone shouted from afar.
"I know some friends who told me that there are some things they don't want to know." Liu Wenkai said meaningfully: "There are some things that they can get through on their own as long as they themselves don't know about it, as long as outsiders don't know about it, and as long as they don't make a big fuss about it."
"Then let's conduct a secret investigation first." Yu Wenshu was unwilling to violate taboos, so he said, "The murderer this time is very fierce, has weapons, and is good at fighting. Each group must have more than 4 people, and they must be as concentrated as possible during the interrogation. Everyone must bring stun guns, and if there are not enough, go get some more."