After the initial investigation of the crime scene, the victim's body was sent to the newly established forensic autopsy laboratory of the county public security bureau for further autopsy. In order to alleviate the burden on Forensic Doctor Chen, Zhao Hongshan assigned her two forensic doctors from the county bureau as assistants, hoping that they could complete the autopsy overnight and produce a complete autopsy report when the meeting was held in the morning.

At around 2 o'clock in the morning, in addition to Forensic Doctor Chen, several other people from the city bureau were arranged by Zhao Hongshan to rest in the guest house of the county public security bureau.

Built in the late 90s, the guest house has undergone a renovation, but the facilities inside are still old and shabby, and cannot be compared with the accommodation conditions in the big cities.

Zhao Hongshan arranged a few rooms for them, let them stay for one night temporarily, and then change them to a place with better conditions if necessary.

Qiao Sheng is an informal person and has never been picky about these complicated things. Even if he went to a poor rural area to guide the handling of cases, lived in an adobe house, and slept on a hard bed, he could gladly accept it. He patted Zhao Hongshan on the shoulder and said, they are here to handle the case, not for vacation, just have a place to stay, don't be so outside.

Zhao Hongshan's heart was a little reluctant, after all, Qiao Sheng was a guest from the city bureau, and they were all masters of solving cases, so they always felt rude if they didn't treat them well. But Qiao Sheng insisted again and again, everything was simple, and it was inconvenient for Zhao Hongshan to say anything.

After a few pleasantries, the four of them went back to their respective rooms to rest.

As soon as he entered the house, Gu Song couldn't wait to go into the bathroom to take a bath. Thinking back to how he had behaved all night, he couldn't help but feel a fever on his face.

After four years in the criminal police team, he has never been so humiliated as he is today. It is estimated that the policemen present will definitely discuss privately when they see his miserable state of vomiting: This kid is the case-solving expert invited by the city? Why is it better to even have an intern?

He laughed miserably, tilted his head, and let the cold water slide through every inch of his body, cooling the pain and resentment in his heart. Since Team Joe trusted him and wanted him to be involved in this case, he had to cheer up and devote himself wholeheartedly. Otherwise, how can you be worthy of the dead victim, and the person who was locked up in the hospital......

After taking a bath, Gu Song's mood relaxed a little.

He walked out of the bathroom with a towel around him and wiping his hair with a towel. It wasn't until he wiped the water from his hair and held the towel in his hand that he noticed that Xia Shi was sitting on the bed by the window looking at him with a serious expression.

Gu Song was stunned for a moment, ignored Xia Shi, and walked straight to the other bed, lying heavily on it, ready to sleep well. Who knew that Xia Shi's eyes still did not take his eyes off him, and his expression became more and more solemn, as if he wanted to see him through, which made his heart furious.

"You, why do you keep looking at me like this?" Gu Song sat up from the bed, frowned uneasily, and said in his heart, this guy shouldn't have any strange thoughts about me, right?

Xia Shi finally spoke: "Gu Song, don't pretend. If you have any secrets hidden in your heart, you should confess them as soon as possible. ”

"What am I hiding? Explain what? Gu Song asked in surprise, and his heart began to beat wildly. It's not easy to fool Xia Shi, he knows that the other party is the same as himself, once he recognizes something, he will never give up if he doesn't find the answer.

"Tell me what you have to do with this murder."

"What do you mean? Why do you ask this? ”

"You know what I mean." Xia Shi's expression gradually softened, "To be honest, did you come into contact with a similar case five years ago and left an indelible psychological shadow, otherwise how could you have such a strong rejection of the murderer's modus operandi?" Why did you vomit like that at the scene of the crime? ”

"So what?" Gu Song asked rhetorically, "This is my privacy, why do I have to tell you?" ”

"Because I want to know."

Damn, Gu Song scolded secretly, and said unhappily: "The surname is Xia, can you not always be so domineering?" Do you want to know what I'm going to say? ”

"You don't have to." Xia Shi smiled proudly, "But I will go to Team Qiao, find Forensic Doctor Chen, and ask the people who participated in solving the case back then to understand, if it doesn't work, I can also go through the files." As long as I am determined to investigate, there is nothing I can't find out. ”

"Okay, good, you're amazing, I'll obey you, okay?" Gu Song made a gesture of surrender, not knowing what he had done in his previous life to meet such a difficult enemy. "I can tell you what happened five years ago, but you have to promise me one condition."

"On what terms?"

"You have to promise that you won't hit me after hearing about it."

"Why should I hit you?" Xia Shi asked suspiciously.

"Because ......" Gu Song was about to explain, when the mobile phone at the bedside suddenly rang. He glanced at the caller ID, saw the words "little junior sister", and immediately picked up the phone.

"What's the matter, Ruonan, is there something wrong?"

"Senior brother......" Qi Ruonan's voice was a little timid, as if he was afraid of something. Don't laugh at me, I don't dare to be alone in my room now, I am scared at the thought of that bloody corpse. Can you come and have a chat with me? ”

"Huh?" Gu Song hesitated, a little unsure of what to do.

Since Fan Cong's death, he has not been alone with Ruonan, and he always feels that it will be embarrassing. He looked at Xia Shi with a pleading gaze and whispered, "Why don't you go over and stay with her for a while?" ”

Xia Shi snatched Gu Song's mobile phone and said to Qi Ruonan happily: "Come to our room now, it just so happens that your senior brother has something to confess to us." ”

A few minutes later, Xia Shi and Qi Ruonan sat side by side on the bed opposite Gu Song, listening seriously and nervously to Gu Song's narration of a very similar murder case.

At around 12 a.m. on June 18, 2011, a horrific homicide occurred near a shantytown on the northern outskirts of R City. The crime took place in a public toilet on the side of the road, there was no surveillance around, the street lights were dim, and few people passed there at night.

The victim, Xiaowen, was a migrant worker who lived in a house in a shantytown and had just turned 23 when she was killed.

The murderer may have lurked at the scene of the crime in advance, waiting for the appearance of the prey, or he may have followed Xiaowen into the women's toilet. He first strangled Xiaowen's neck with a rope to make her lose the ability to resist, and then used extremely cruel means to drag the victim's intestines out of his body and wrap them around the victim's neck, causing her death.

After the case occurred, the municipal bureau set up a special case team and invited criminal psychology experts from the provincial public security department to assist in solving the case. Through the investigation of the victim's social relationship, the police basically ruled out the crimes committed by acquaintances such as love killings and vendettas, as well as the motives for robbery and rape, and finally came to the conclusion that the murderer was very likely to have psychological abnormalities, and the possibility of his re-committing crimes was very high.

Because the nature of the case is extremely vile and the modus operandi is extremely brutal, it is easy to cause social panic, and the police have strictly sealed the news to the outside world. Except for the case-handling personnel at the time, the leaders above, the person who reported the case, and the victim's family, everyone else was completely unaware of the case.

Based on the murderer's unique modus operandi, the police speculated that the murderer may have a background in medicine, anatomy, and other related knowledge, and may have experienced major setbacks in life or work, resulting in his psychological abnormalities. They searched the city for people who were eligible, but the results were undoubtedly a very large number.

There is no surveillance video, no witnesses, and no fingerprints, footprints, DNA and other information related to the murderer have been extracted from the crime scene, and the police cannot lock the identity of the murderer at all.

The strange thing is that since Xiaowen was killed, the murderer seems to have evaporated from the world and never came out to commit a crime again. At one point, the police suspected that the demon had been imprisoned for committing another crime, or that he had fallen ill and died in an accident. Unexpectedly, five years later, a similar case happened again.

After listening to Gu Song's narration, Qi Ruonan's face was full of doubts. "Senior brother, didn't you just say that except for the police who handled the case, the leaders above, and the reporter and the victim's family, no one knew the inside story of the case back then. How do you know? In 2011, you were a student at the Police Academy. ”

Xia Shi seemed to understand something, and said after thinking: "Your situation should be the latter two. Is it possible, you ......"

Gu Song replied with a wry smile: "I am the one who called the police." ”

"What?" Qi Ruonan covered her mouth in surprise, and then she realized a problem again, "The time of the crime is 12 o'clock in the morning, how could you run to that kind of ghost place?" ”

"I'll answer that later." Gu Song said and looked at Xia Shi apologetically, "There's something, I think I have to tell you." ”

"What, what's the matter?" Natsushi swallowed nervously, and his heart began to beat faster.

"That night, I didn't go to the scene of the crime alone. At the time, I had a girl with me, and you both knew her. ”

"Wait......" Xia Shi made a stop gesture, not wanting Gu Song to say any more. He already knew who the girl was, and he probably guessed what happened to her.

Despite this, Gu Song continued: "In my junior year, Xinlei and I were in a relationship. On the night of the incident, we happened to be passing by the shanty town because of something. Xinlei suddenly said that she had an upset stomach, so we found a public toilet on the side of the road. I saw that the neighborhood was quite remote, and I was afraid that there would be bad people, so I stood at the door of the women's toilet and waited for her. Who knew that not long after she entered, she ......"

"So, she found that horrible corpse?" Qi Ruonan asked in surprise.

"Hmm." Gu Song nodded, "Because of the dim light, she tripped over something under her feet when she went in, and when she took out her mobile phone, she saw a creepy corpse." She was terrified and kept calling my name inside. I thought she had been attacked by the bad guys hiding inside, and rushed in to save her, and that nightmarish scene still lingers in my mind to this day......"

"Oh my God, I really didn't expect things to be like this......" Qi Ruonan suddenly remembered the rumors that circulated in the school a few years ago, and finally understood why that girl disappeared from school inexplicably, and why Gu Song would interrupt her impatiently when asked about Gu Song. But where is Sister Xinlei now? She asked, apprehensively.

Gu Song closed his eyes in pain, and replied slowly, "She, ...... in a mental hospital"