Chapter 42 Section 1

Liu. think. indistinct. There were three people standing in the hall, but there was only one shadow on the ground. Liu, China's chief criminal forensic expert, during the investigation of the crime scene, his gestures are as exquisite as geometric drawings, and he is well-known in the police circle as "the ballet dancer at the crime scene"! Si, questioner, all crime scenes should have such a questioner, she is responsible for questioning everything: the authenticity of fingerprints, the shape of bloodstains, the location of corpses, the right or wrong of conclusions...even, questioning her own existence.

As for Miao, she is the only survivor of the Hupanlou case, and she is also the suspect in this major criminal case that resulted in the death of six people.On the surface, she looks beautiful and has a noble temperament, but in fact, she is just an ordinary girl who is struggling to find her lover and is scarred both physically and mentally. "Okay, let's divide the work." Liu is the leader of the three, she looked at the wall clock on the wall, and said coldly, "It's almost five o'clock in the afternoon, and I want to fight for it before dark." Finish the investigation of the crime scene. Si, you must follow me. Miao, you have a more important job to do, which is to go back to the room where you lived on the second floor, and recall what happened on the day of the accident, how did you get all over your body? He ran to the national highway in blood."

"I... I'm a little scared, I don't dare to go." Miao lowered her long, trembling eyelashes. Si Liu frowned slightly, "How about I go with Miao?" "No!" Liu flatly refused. She put her arms around Miao's shoulders, feeling that those shoulders were icy cold, still trembling slightly. The only shadow on the ground reflected him gently bending his arms to hug him. "Miao, everyone's wounds will eventually heal by themselves, especially women." Liu said, "Now, you have to face everything alone." Miao nodded lightly, and walked upstairs silently.

Seeing her disappearing at the top of the stairs, Liu said to Si: "Let's go, let's go to the ktv private room. I'll carry the on-site investigation box, and you will take the folder." The two walked eastward along the corridor, stopped in front of the closed wooden door of the KTV room, and took a long, deep breath at the same time. Inside, there are too many unknown gore. Liu stretched out his hand, wearing a milky white rubber glove.The fingertips pressed hard on the slightly heavy wooden door, and the door opened. The vast clouds almost pressed down to the eaves, radiating iron-blue light, which was thrown into the private room from the window, spreading a few spots of light like shrouds on the floor.Except for the six corpses, first- and second-level physical evidence, murder weapons, and physical evidence that are significantly related to the case have already been removed, the sofa and glass coffee table are still in their original state.On the ground, human figures were outlined with white chalk, indicating the location and state of the corpses, and there were also many yellow wedge cards with numbers written on them, which were used to mark the location of physical evidence—the police evacuated in a hurry, so there was no thorough investigation. clean up.

Basically, it can be regarded as a grain depot without a grain of rice left. Si walked in. But Liu turned his head and looked at the corridor and the walls on both sides that he had just passed. "What's wrong?" Si asked. "It's not standardized enough." Liu said, "The crime scene of a major case should be investigated at multiple levels. The first level of the lakeside building case should be within half a kilometer of the building, and the second level is all the internal spaces of the building." , The ktv private room is the most central level. You see, the marking of physical evidence in the private room is fairly standard, but there is almost no yellow wedge-shaped card erected outside the private room, which shows that the police crime scene investigation is only for the central level. Basically not involved. Of course, the logic of criminal investigation is: the initial focus of work should be concentrated on the center rather than the periphery - this is because the center level is most likely to find relevant physical evidence and morphological evidence, but this does not mean that other levels can be ignored .”

After speaking, Liu put the on-site survey box at the door and opened it. The rectangular leather box was padded with a thick layer of foam plastic, embedded with a replacement light source scanner (als), aerosol reagent spray (luminol), aluminum Powder and other metal jars used to extract trace evidence, and a row of pen-like bags hanging on the back panel, inside are sample containers, permanent ink markers, fingerprint brushes, screwdrivers, and so on.She took out a magnifying glass and tweezers from it. "I'm going to start a site search." "Which mode?" Si asked.

There are six commonly used crime scene search modes: linear search method (stripping the tape), grid search method (grid walk), area search method, circular/radial search method, spiral search method and relational search method.Among them, the stripping method is generally aimed at outdoor crime scenes. The area search method often requires multiple investigators to carry out the search together. The search speed of the circular method and the spiral method is relatively fast, but it is easy to miss physical evidence, but it is getting late. Finish the work before dark, you can't walk around on the floor with a magnifying glass, can you?

However, Liu said categorically, "Follow the grid." The grid search method means that on-site inspectors start from one end of the wall, search straight to the other end, and the search width does not exceed 50 cm. After reaching the other end, turn around and search to the other end again along the parallel line of the first search. In this way, after searching one orientation plane (such as east-west plane), start another orientation (north-south plane) equivalent mode search at the end point of the search. This method takes the longest time, but is the most thorough and systematic.When studying in the United States, Liu Simiao once went to an apartment located west of Central Park in New York to ask for advice from Lincoln Rhyme who lived there.The greatest criminal forensic expert in the world today, who once served as the head of the New York City Police Department's criminal resources team, was paralyzed by a collapsed beam during a field investigation.When she sat in the Victorian first-floor living room and asked what would be the most effective search method at a crime scene, Lincoln said without hesitation, "Tracking, of course!" Unable to move his lower limbs, with infinite hatred in his eyes——

"You know, hunched over like a cat, inch by inch, on the floor, and finally find a piece of physical evidence that was overlooked: blood, fingerprints, hair, or simply a strange smell of air, it feels better than a fucking It's even better with a swig of Scotch!" The investigation begins behind the door, one of the six dead ends in an indoor crime scene investigation.Liu clearly remembered that a year ago, he had extracted a drop of blood from the crack of a door hinge at a certain murder scene, thus locking down the suspect.But it doesn't need to be so hard now, there is a large black stain on the lower half of the back of the door panel, which is obviously blood.

"This is caused by Li Jialiang's bleeding when he was assassinated by Meng Ruhu." Si opened the folder and pulled out a photo taken by the police at the crime scene. With a painful expression, there was a pool of blood under his body. Liu glanced at the photo, picked up the magnifying glass and searched upwards, and finally found a wedge-shaped concave point at a height of about 110 centimeters from the door. "The first knife pierced Li Jialiang's abdominal cavity from the front and stuck it on the door, leaving this mark." Liu tapped the concave spot lightly, "Li Jialiang is 175 centimeters tall. He should have been standing in the first stab, with his back leaning against the door, and then slowly slid down to the ground, where he was stabbed a second time, and a third time..."

"The police's initial investigation report concluded that Li Jialiang was killed by Meng Ruhu when he wanted to escape from the door. I'm afraid this conclusion is not correct." Si frowned, "If he really wanted to escape, it should be the knife. Stabbing from the back, the current posture, no matter how you look at it, it looks like he was holding the door and refused to let Meng Ruhu escape, so he was assassinated by the latter." "Record it," Liu said, then squatted on the ground, stood on his heels, and carefully moved east along the wall a little bit, staring at the magnifying glass in his hand with piercing eyes, as if dissecting every grain of dust. Molecular Structure. Arch your back like a cat. Time passed by every minute and every second, and the light spot on the floor gradually tilted into a trapezoid.Si sighed, "Liu, this crime scene has already been investigated by countless criminal police. Do you really expect to find anything new?" "Most criminal policemen are mining at the crime scene, but I am panning for gold." Liu said coldly, gently twisting an irregularly shaped gray plastic piece with his fingers, "What is this?" Si opened the file folder, carefully examined the thick stack of physical evidence photos, and then took out one and handed it to Liu, "Do you think it fell from this?" Liu saw that it was an almost shattered remote control, and beside the photo it was marked that the physical evidence was found under a double sofa against the west wall.She bent down and looked towards the west wall with a sense of luck: ah!The remote control is actually still under the sofa, and the yellow wedge-shaped card next to it is marked as No. 17... Maybe it's in a hidden location, or the police didn't list it as an important physical evidence at all, so it was left in the empty "grain depot" This grain of "rice" was dropped. She first drew a △ on the floor with a 5b pencil that was not connected at the top, then walked to the loveseat, stretched her hand under it, and used the edge of the wedge card to pocket behind the remote control, and slowly removed it completely Come out, look again and again with a magnifying glass, and then ask: "The preliminary investigation report said how did this remote control break down?" Si replied: "I suspect it was accidentally stepped on by someone and kicked under the sofa." Liu shook his head, "The stress point on this remote control is very even. Wherever it is stepped on, it is clearly stomped. The gray plastic piece also burst out in an instant..." Si was very confused, "Stomp? Why do you want to smash this thing?" "I'm afraid it's up to you to find out the answer." Liu said, "Now you put this remote control together and restore it as much as possible." Si looked at the remote control that was shattered like kiln tiles, and smiled wryly, "Are you kidding me? This three-dimensional jigsaw puzzle game is not fun." Liu glared at her, "At the crime scene, I never joke. Have you forgotten the Tiantongyuan shooting in March last year? In order to confirm the firing path of the bullet, I spliced ​​hundreds of pieces of tempered glass together, and it took me a lot of money. It took two days and two nights to realize the reproduction of the position of the bullet hole." Si pouted helplessly, squatting on the ground while collecting plastic fragments, while splicing the remote control. The investigation of the crime scene is a continuous process. If it is interrupted due to special reasons, it should be marked at the interruption point, and the next investigation will continue from the marked place, just like the end of the thread - pay attention to clearing the mark in time to avoid being caught by other investigators. Mistaken for a symbol left behind by a criminal. Liu went back to the △, blotted it out, and continued walking the grid. Go all the way to the east wall, and forward is the playback control room on the innermost side of the private room.Liu stood up, pushed open the door of the control room, and carefully checked the computer for ordering songs, the audio control panel, etc., and found nothing unusual.She squatted down again, looking at the narrow area formed by the back of the door and the corner of the wall - Gong Jing's body was once curled up here, and a hand stretched out from the corner of the door... Now, there is only a circle of human-shaped white lines left here, but it is still chilling. Liu rubbed his arm subconsciously, and was about to get up to leave when a thought flashed through his mind.She curled up on the floor exactly according to the shape of the corpse drawn by the white line of the human figure, trying her best to stretch out a hand to the outside of the door corner... Seeing that hand, Si was startled, "What are you doing?" Liu stood up, patted the dust off his body, walked out of the control room, and said in a low voice, "I think of Agatha Christie's "The Mirror of the Dead", in which Poirot looked at Sir Jervis who was disguised as suicide , said a simple but to the point." "What?" Si was a little nervous. "Poirot said: 'How uncomfortable he died!'"