Criminal Investigation Notes

Hearing what he said, all the people present showed puzzled expressions on their faces. I don't know where Su Hui deduced it from.

Even the physical evidence on the side, Jiang Xiang, came over curiously, and everyone surrounded Su Hui, who was kneeling on the ground, waiting to hear his explanation.

Sooner or later, Lu Jun introduced to Captain Qi and Jiang Xiang that Su Hui was the new consultant of the serious crime team.

On the way here, everyone greeted him politely, but he could still see from everyone's eyes that Captain Qi had some doubts about Su Hui. Probably because Mr. Su looks too young and weak, he doesn't seem to have any experience.

Now Su Hui only stayed at the scene for a while, and suddenly said such words, still questioning the testimony they provided before, Captain Qi was a little unhappy.

"If according to the testimony of those several witnesses, the suspect picked the lock and entered the door, took the murder weapon, went straight to Xie Peilan who was in the living room, and quickly knocked down his wife before she could respond and shout, the murderer used a weapon similar to a baseball bat, She hit Xie Peilan more than ten times in a row on the head, causing her to die. At this time, my mother-in-law heard the voice and went downstairs." Su Hui said here, raised his head and looked at Captain Qi, "I'm right in repeating it. ?"

Captain Qi nodded: "Yes, several people said this, what's the problem?"

Su Hui turned his head and pointed to the bloodstain on the wall: "But this bloodstain shows a completely different situation from the testimony."

Wu Jian Jiang Xiang was a little puzzled: "This is the blood stain formed by the splash, caused by the gravitational blow. When we arrived, it was already dry, and the extraction test was carried out." He compared the test results, "The blood belongs to Xie Peilan, and no discovery was made. Alcohol and drugs, nothing else found special..."

Su Hui pointed to the bloodstain and explained: "The special thing is not in the blood, nor in the form of blood splatter. With each blow, Xie Peilan's blood will splatter on the wallpaper, forming blood stains. After the blow stops At this time, the blood will have time to seep into the wallpaper. When the blood is half dry, a new blood is sprayed up again. At this time, the excess blood will flow down the wall, but some blood will continue to seep in.”

His fingertips crossed the red patch, pointed to the lighter part on it, and then pointed to the obviously darker part on the side: "It is because of such many splashes and infiltrations that we can see that , these bloodstains finally showed different shades."

Hearing this, Lu Junchi understood, and he squatted down to observe carefully: "In other words, the deeper places may have been sprayed with blood many times, and those shallow places may have been sprayed with blood once? "

Su Hui nodded: "The more blood penetrates, the darker the color will be." He pointed to the deepest part in the middle, "There may have been three times of blood splattered here."

"Makes sense..."

As soon as Su Hui pointed out these anomalies, Jiang Xiang immediately discovered them. These are the small details that he and the previous material review have ignored, "These differences in depth are caused by the penetration of blood. If the blood has not penetrated into the wallpaper, spray it on With new blood, the blood fuses together and does not form such marks."

Su Hui continued to point to the wallpaper: "I took a look at the wallpaper, and the permeability is not very strong. The traces can be formed, indicating that the time interval between the blows may be relatively long."

Jiang Xiang nodded again and again: "Consultant Su, your analysis makes a lot of sense. Later, we will collect some wallpapers and conduct a simulation test in the Wujian laboratory to see what time interval can form such traces."

Lu Junchi got up and concluded, "Anyway, this shows that Xie Peilan did not die immediately, and there is indeed something wrong with the testimony."

Su Hui pointed to the side again: "And here." Everyone followed his slender fingers to see that there were two traces, both in the lower position. There is a piece of light blood in a circular shape.

Su replied: "This scrap of blood is probably caused by the deceased's head sliding against the wall, and the one next to it may be the deceased's hand supporting the wall. The deceased should have struggled and called for help."

Listening to Su Hui's analysis, Captain Qi's face had a fever, but he had to admit that these were the evidences they had missed before. These traces all showed that the deceased's death was a long process, which did not match the testimony.

The murderer slammed Xie Peilan on the head, and after a period of time, he slammed a few times, and this process may have been repeated several times.

This poor woman, who once lay on the floor, moaned, twitched, struggled until she died...

How can the family be completely unaware of the long and brutal murder process when the family is at home?

Jiang Xiang recorded these records, took another photo, and said, "Thanks to Consultant Su, I will add to the report later..."

Hearing this, Captain Qi admitted his previous mistakes, gritted his teeth, and said, "Mr. Su is still careful... This case does have a lot of doubts. It may be necessary to ask the relevant personnel a second time."

Su Hui bowed his head and said, "These are still to be tested before we can conclude."

Hearing their appreciation for Su Hui, Lu Junchi was even happier than he was being praised. He stood up and figured out how to continue the investigation next.

The case soon found a breakthrough point, and the inconsistency of the confessions showed that there was another hidden situation in this case.

He looked at the previous visit records. If it was really as Su Hui had deduced, it was impossible for the neighbors not to hear a single sound.

When Jiang Xiang and Captain Qi left, Lu Junchi was about to ask him to go downstairs to chat with the neighbors, when suddenly he heard Su Hui whisper to him.

Lu Junchi bent over and asked, "What's the matter? Is there any problem?" Then he reacted a little and asked with a frown, "Why are you still kneeling?"

Su Hui sighed, instead of speaking, he hooked his fingers at him.

Lu Junchi was helpless and leaned closer to him.

Only then did Su Hui lie in his ear and whisper, "I'm numb from kneeling and can't stand up, can you help me?"

Lu Junchi: "..."

Su Hui's kneeling posture was behind the TV cabinet, obviously unable to stand, Lu Junchi bent down in front of him and hugged him from his armpit, then helped him up.

Su Hui's whole body was so light that it didn't look like the weight he should have for his height. His legs were completely numb, and he couldn't exert any strength on his waist. He leaned on Lu Junchi's body, pulled his clothes and hissed.

Lu Jun asked lately, "Is it too numb?"

Su replied: "I just can't move, you let me rely on it for a while."

Lu Jun hesitated for a while, then stretched out his hand to wrap his waist, it was too thin...

The positions of the two were really close together. From the back, it was Lu Junchi who hugged Su Hui.

Over there, Jiang Xiang's eyes just flicked this way, and immediately turned away as if he was on fire: "That Captain Qi... I have something to ask..."

Lu Jun didn't care at all, then he saw the shoelaces on Su Hui's feet open, and sighed: "You..."

In his opinion, Su Hui is really worry-free enough, how could such a smart person not be able to take care of himself?

When Su Hui stood firm, Lu Junchi squatted down, flipped his fingers deftly, and tied a bow to Su Hui's shoes.

Su Hui narrowed his eyes, revealing the lying silkworm at the moment: "Thank you Captain Lu."

Lu Jun said lately, "Would you like to find a place to sit for a while? I'll go to the neighbor's house to see."

Su Hui rubbed the legs that had just recovered, took a few steps and sat on the stairs of the duplex building.

He was afraid that the previous back injury would be repeated, so he didn't dare to bend over, his back was straight, and the sitting posture looked like a child sitting at the stairway waiting for his parents to come home.

Lu Junchi called a little policeman and was about to go downstairs. After thinking about it, he turned back and handed him Su Hui's backpack and the information about those cases.

Su thanked him back and sat on the stairs of the duplex building, looking at the photos of the corpses.

In the photo, Xie Peilan's eyes were half-open, the right side of his head to his ears were all blurred with blood, blood and brain tissue had long been entangled with his hair, and his death was extremely miserable.

If this case is not the work of those outside robbers, then who is the real murderer?

Su Hui stared at the photos, from which he could feel the murderer's strong hatred for Xie Peilan...

The image of the murderer gradually became concrete in his mind, and the whole process of committing the crime became more and more clear.

But those are just theories, and he still needs practical evidence to confirm his profile.

Su Hui suddenly raised his head and asked Jiang Xiang, "Jiang Wujian, have you brought Lumino?"

"I brought it." Jiang Xiang has two bottles of Luminol, which he has been carrying along with the identification box. "Where do you think there are bloodstains?"

Su replied, "I'm just guessing... Could you spray the wall behind the sofa for me."

Jiang Xiang put on his mask, took two steps forward, and looked suspiciously at the wallpaper behind the sofa. Although there were some dim traces, it was not certain that it was blood.

He sprayed some luminol on it, the reagent reacted for a while, and then Jiang Xiang glanced at the fluorescent color that appeared on it and snorted.

The room was filled with the familiar sour smell of Lumino. Su Hui coughed for a while, but managed to stabilize. He couldn't see clearly, so he could only ask, "Did you find anything?"

Jiang Xiang looked at the spots gradually emerging on the wall: "Yes."

Luminol reagent is a mixture of luminol and hydrogen peroxide. It has very high sensitivity and can detect 1/100 of blood. It is especially suitable for detecting trace amounts or long-term bloodstains that have been wiped.

Su Fu calmed down and said in a hoarse voice, "Okay, then you can spray other places."

Jiang Xiang asked, "Where?"

Su Hui: "Spray whatever you want, in a blank space, on the wall, on the ground."

Jiang Xiang took the reagent bottle and started spraying, so more traces appeared on the wall and the ground.

Su Hui said again: "You pull the curtains and take a look."

Jiang Xiang sighed. As the curtains were drawn, the environment dimmed, like magic. There were many fluorescent splashes on the off-white wallpaper and in the cracks on the ground. These traces were obviously wiped. Tried bloodstains.

Even with his bad eyes, Su Hui could see that for a while, there were many traces of blood on the walls of the room, and the entire first floor looked like a haunted house.