Although five years have passed, because that memory is indelible and left too deep psychological traces, Chu Dongren still remembers the details of the case back then. When he told Chu Yu, there was no sign of recalling it, as if it happened yesterday. There is no need to recall.

"The trace inspector inspected the scene. I was there at the time, so I know the situation very well. The distribution of the blood is like this. There are blood splatters on the wall of the stair room on the top floor, bloody handprints on the railing of the roof, and strips of drips on the stairs. It fell, and then a rubbing bloodstain, that is, the blood flowed to the ground and was dragged by someone, the rubbing bloodstain was about 1.5 meters long, and then stopped abruptly behind the stair room."

Chu Yu put forward a hypothesis: "Could it be that the murderer hugged Mu Shangqing, or carried him up, lest the blood traces point to the direction of his escape and leave too many clues?"

"If this is the case, blood has been dripping from Shang Qing's body. After rubbing the blood stains, there will be dripping blood stains, but there are no blood stains at the scene, and if the murderer wants to hold Shang Qing, his hands and feet will inevitably be sticky." There were bloodstains, leaving bloody footprints and handprints, but there were none at the scene. We only found Shang Qing's handprints and footprints, mixed with dripping blood, indicating that when he stepped back, he stepped on his own blood and was pushed to the ground by the murderer. At the edge of the roof, reach out to hold on to the railing."

Chu Yu persisted in looking for scientific evidence: "Could it be that the murderer did a good job of counter-investigation, dragged Mu Shangqing to the top of the building, wrapped him up, or wrapped up the wound, Keep the blood out, put him on your shoulders, and leave the scene?"

"If that's the case, why did he drag Shang Qing's body before, leaving such a smear of blood? And if he wanted to be clean and tidy, he wouldn't use a knife to leave so much blood."

Chu Dongren's brows and eyes were stained with fatigue, Chu Yu saw it, pursed his lips, and remained silent for a long time.She knew that these inferences and refutations must have been staged dozens of times in the Public Security Bureau and the Investigation Department five years ago. Hypotheses were put forward, falsified, proposed again, and falsified again. The bigger it is, the more it becomes a ball of yarn that cannot be untied.

"In other words," Chu Yu felt self-confident, "The murderer is a pervert. He has an unusual way of thinking. He leaves traces first, and finally makes the traces disappear suddenly. The reason is to be abnormal and disrupt the police's thinking in handling the case."

Chu Dongren glanced at her, helplessly, and nodded, "I also think the murderer is mentally ill, otherwise he wouldn't have killed so many people for no reason, with no motive at all."

Chu Yu's passion was ignited, and she wished to find out the truth immediately. She clenched a fist with one hand and tapped the other palm a few times, "Dad, do you keep the photos and files of the case back then?"

Judging by her posture, she knew that the old case was going to be reopened, and Chu Dongren hesitated for a moment, "Are you going to focus on Shang Qing's case now?"

"Yes, the potential victims are all secretly protected by the police. The Phantom of Sophora japonica is estimated to arrive in Jinling City tomorrow. When she arrives at a place, she should first step on the spot and make preparations. She won't do it right away. I have about two days. I want to Concentrate on the case of Mu Shangqing, because I have the feeling that he is the breakthrough point of the whole incident, including the murder case six years ago, and the current Sophora Phantom incident."

Chu Dongren hesitated to speak, and finally supported the decision of the current Chu Department: "The photos are stored in the computer of the investigation office, and the files are in the Wangjiang City Public Security Bureau."

Going out of the hotel, Chu Yu issued an assembly order, and the staff of the investigation office packed up their things and rushed over. Fang Datuo dragged his suitcase, followed by Song Qingyang, and couldn't help feeling: "Are you going home? I I thought it would take a few more months, but it’s okay, I want to die in the bathroom, it’s like a branch opened by God in the world.”

The last one to arrive at the airport was Muyu. She accepted the toast expressionlessly at the "apology banquet". Immediately entered the drunk mode, greeted Feng Ju, said that he was too drunk, and would make an appointment next time.

The three clerks knew that the plan had changed, but they didn't know what the specific change was, so they followed Chu Yu back to Wangjiang in a daze, and completed the teleportation.

After entering the door, turn on the water and turn on the electricity, and there are signs of life in the whole Superman's place. Chu Yu is like a bandit who dominates the mountain. He patrolled the room. He wanted to hold an emergency meeting immediately to make work arrangements, but seeing the three brothers Chu Yu couldn't bear it, she turned on her phone and started counting down, "It's 10:10 in the evening, three hours later, that's 1:10, meet in the conference room on time, If you are late this month’s salary will be confiscated, please reply if you receive it!”

"complex!"

"complex……"

"Repeatedly."

The three clerks raced against time and rushed back to the room to catch up on sleep. Fang Datuo didn't even bother to take off his clothes, so he just rolled on the bed and fell asleep.

Chu Dongren sat on the sofa, staring blankly at Chu Yu, the retired old man waiting to arrange accommodation.

Chu Yu crossed his arms and thought about the spare room in the office.

The second floor of the investigation office is like a mansion. After entering the door, there is a living room and dining room, next to the kitchen, and a long and wide corridor. There are bedrooms on both sides of the corridor. There are as many as ten bedrooms, but only four One room for four people, the other rooms have been empty all the time, and no one sleeps anyway, so they can only be used as decorations after cleaning.

"There are many vacant rooms, but there may be more dust. My room is quite clean. Otherwise," Chu Yu snapped his fingers, "You can sleep on the sofa."

Chu moving: "..."

Chu Yu took out the quilt and pillow, spread them out, and said good night to Chu Dongren, "Dad, you must have not closed your eyes for the past two days, so take a rest and see you tomorrow."

See you at one o'clock tomorrow morning.

Turning off the lights, Chu Dongren looked at Chu Yu's back, and suddenly asked: "Wait, do I need to restate the case in front of all the officers?"

As soon as Chu Yu walked to the corridor, he stopped in his tracks, held onto the corner of the wall with one hand, turned his head sideways, and gave a soft "hmm".

Chu Dongren has been the director of the department for eight years. He was separated from the public security agency and worked alone for six years. He has presided over countless large and small meetings.

"What's wrong?" Chu Yu couldn't help asking when he heard that he didn't have anything to say.

Chu Dongren raised his head and looked at the plaque of "Supernormal Person Research and Investigation Office" opposite the door, "I have a little excitement of getting out of the sheath again when the sword is not old."

After washing, Chu Yu returned to her room, closed the door, put on a mask, and started a group voice chat with Wu Ke and Chen Min.

It's good to be in her line of work. No matter when you want to chat, you can always catch someone who is not asleep. Even if the other party is asleep, you can also catch him and chat with him unconditionally.

Wu Ke and Chen Min are now in Jinling City and Changyan City respectively, as the captains of the secret protection team, responsible for the safety of potential victims.

"How's the situation over there, Ako, tell me first."

"Everything is going well here, there is no abnormal situation, and the protection target works and rests as usual every day. Although it seems that the mood is not very good, there is no abnormal behavior at present."

Chen Min: "Everything is in place at Chang Yan's side. Eyeliners are arranged inside and outside the hospital, but I think the Phantom of Sophora japonica is unlikely to be close to my protection target. This hospital is fully enclosed. How can she get in?"

Chu Yu chuckled lightly and almost wrinkled the mask, "Hehe, don't forget, the first place where she commits crimes is a mental hospital, she can go in as a patient, maybe even as a doctor. God, you all be careful, anyone who is close to the target of protection must be careful, no matter men, women, old or young, she may appear in any form!"

Wu Ke: "Okay, we all remember that today a three-year-old doll went to the stall to buy fruit, and I stared at him intently, for fear that he would suddenly fly out with a knife. I don’t know how to shrink bones!”

Chu Yu couldn't hold back anymore, he laughed, and the mask was completely folded, "Haha, it's not necessarily true, even a living person can't relax his vigilance, because he might be hired by her."

Chen Min: "A short-legged dog approached Fushan Hospital today, and all the team members reported to me."

Chu Yu: "..."

Why does she feel that the image of Sophora japonica Phantom in their minds has been sublimated, out of the scope of normal people, it has already changed 72 times, right?

……

At 27:1 am on the 10th, the five people reunited in the conference room at the end of the corridor. Under Chu Dongren's guidance, Muyu retrieved the materials from five years ago and sent them to the computer in the conference room for easy display.

Looking at the pictures of the scene, combined with Chu Dongren's previous narration, Chu Yu had a clearer understanding of the case, repeated it to the staff, and tortured his soul, "How do you think the murderer took the victim away from the scene? Two points to add: first, the victim’s pair of shoes, the criminal knife and a bottle of benzodiazepine were left at the scene; second, no fingerprints or footprints of the murderer were found at the scene.”

The conference room fell into silence, and the three staff members all lowered their heads. Chu Yu suddenly stopped, holding up a chalk, and asked, "Which student below wants to go on stage and solve this function problem?" Dead silence.

Chu Yu knew that this question was difficult, and she didn't solve it by herself, so she gave the staff enough time. She turned her back to the conference table and looked at the pictures on the scene several times.

The crime took place in a six-story migrant worker dormitory. The first floor was crowded with people, and the inside was dilapidated and damp. However, each room had a small balcony where clothes and sheets could be hung out to bask in the sun.

There is a row of trash cans downstairs, but they don't work at all. The capacity can't keep up with the garbage production speed of the residents in the building. It's noon every day, and the garbage has already piled up like a mountain, climbing to the windows on the first floor.Residents on the first floor did not dare to open the windows, and when they opened, there was a deadly "fragrance".

Muyu noticed the garbage dump and bravely raised his hand to answer: "It may be like this. The murderer first wrapped the victim to prevent the blood from leaking out, then threw the victim over the railing and threw it into the garbage dump below, and then he left by himself through the stairs. , he may have put some shoe covers on his feet, and he bypassed the bloodstains perfectly, walked out of the building, then walked around to the garbage dump, and carried the victim away."

Fang Datuo leaned on the stool, and when he heard the speech at the same table, his facial features were distorted with laughter, "You...hahaha...why do you sound so funny."

Chu Yu supported his back with one hand, and held an infrared laser pointer in the other, pointing to the location of the trash can on the photo, "It looks like this pile of trash is soft and comfortable, it might feel like it's on cotton, but there's a row of rubbish underneath. The trash can, if a 140-pound person is thrown from the height of the sixth floor, it will make a loud noise. I didn’t hear any unusual noises at night, and the garbage outside the window slept peacefully.”

Muyu: "Then could it be that the murderer carried the victim on his back and climbed down with the help of the protruding balcony? Anyway, the murderer couldn't be blatantly carrying someone, walking from the building, right, the corridor is full of people, someone will definitely notice him .”

Song Qingyang denied it from a professional point of view: "It's too difficult, I can't even do it."

From the 18-meter-high rooftop, jumping one by one with the help of the balcony ceiling must use both hands and feet. If you are carrying a 140-[-]-jin person on your shoulders, you must free your hands to fix him, and you must save it during the jump. Balance is almost impossible.

Fang Datuo laughed even more this time, "Hahaha, Mumu, you are so cute, do you think that the murderer can do light work and walk over walls?"

Mu Yu glared at her, "You can do it, if you can answer it, I will teach you search engine grammar for free."

When Fang Datuo heard this, he stopped laughing, coughed, and regained his seemingly in-depth scholarly temperament: "Chu Chu, I was thinking about how the murderer got the victim away, maybe we can let it go later, because I have a question that I am very curious about. The victim, Senior Mu, why did he go to the rooftop of the migrant building? Did he play a tactic with the murderer and fight on the rooftop? There are many people in the migrant building and it is easy to be found Yes, even if the murderer wanted to single out, he wouldn't choose that place!"

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