When Liu Ruoyun heard Xiao Yi say this, his whole person was excited, and he replied, "Well, I found traces of the second person's participation on the deceased. Your guess is right. ”

"Is it a king?" Xiao Yidao.

"No, another person, found the fibers of the clothes in the fingernails of the deceased, and by comparing the fibers of the clothes of the four people in the dormitory, that person is Zhang Liang." Liu Ruoyun said.

"Okay, I'm still in school." After Xiao Yi finished speaking, he made a color to Liu Xiaodong.

"Captain, go back first or bring the suspect back to the bureau directly." Liu Xiaodong didn't understand what Xiao Yi meant.

"Take the deceased Liu An's roommate Zhang Liang back, Liu Forensic Doctor found traces of his appearance at the scene on Liu An's body, I will go to buy food and go back to the bureau to eat later." Xiao Yidao.

"Okay captain, but I have a question, you have never been so punctual about three meals a day before, and now ...... I feel like I'm going to starve to death if I don't eat a meal. Liu Xiaodong said with a smile.

"I ...... I seem to have forgotten who I am...... Forget it, the case matters. When did I have this obsession with three meals a day? ”

"Still poor here." Xiao Yi said and looked over with a look.

Liu Xiaodong walked to Zhang Liang's classroom with a smile on his face. The captain has really changed, he never was obsessed with three meals before, and he didn't joke with people in his spare time to handle the case, the whole person was in a tense state, how did the captain's split personality feel no better and a little worse. Maybe...... Now it's the real captain.

Xiao Yi is now thinking about a question, how did the murderer kill Liu An in just a few minutes, and then leave the scene of the crime. And even the people cleaning downstairs didn't see it.

At this moment, Wang Jun, who was squatting near the school's main distribution box, watched a man who was nearly 40 years old and led several people in electrician clothes to the distribution box to check the circuit, and found the place where the problem occurred in less than 10 minutes.

Wang Jun was a little puzzled, the maintenance line should not be, one by one from the place of the power outage, and now he came directly without looking. It seems that I knew in advance that there was a problem with this part of the line.

Looking at the time, it was already noon, and Wang Jun planned to go directly to the head teacher in the afternoon to understand the situation.

Xiao Yi returned to the bureau, looking at the wall clock on the wall, he always felt that something was wrong, and he seemed to have ignored the crucial evidence.

"Team Xiao, what's wrong......" Zhang Jing looked at Xiao Yi and asked.

"You go get some sleep first. Yesterday I had a busy night's work." Xiao Yi looked at Zhang Jing with dark circles on his face and said.

In a cemetery in the city, a man dressed in black stands at a tombstone with white flowers in his hand.

"You have been waiting for this day for a long time, rest assured that Liu An, who humiliated you, is dead. There are a few more next, you can rest assured that they will all go down to accompany you. After speaking, the man put down the flowers in his hand and left the cemetery.

Xiao Yi was about to interrogate Liu An's mother, he always felt that she was hiding something very important.

After looking at the time, it was already 1:30 p.m., Liu Xiaodong handed over the USB flash drive to the technical department, and entered the interrogation room with Xiao Yi.

"Name." Liu Xiaodong asked.

"Helan." Liu An's mother looked at Xiao Yi and Liu Xiaodong a little uneasily, and whispered.

After about 10 minutes, after the normal process was completed, Xiao Yi asked directly: "Is Liu An your own child?"

Helan hesitated for a moment and said, "I was born by me."

"You're lying, just now you said that you are 36 years old this year, and Liu An is 20 years old this year, which means that you gave birth to Liu An at the age of 16, but we investigated that you are still in junior high school at the age of 16." Xiao Yi's tone was a little stern.

Liu Xiaodong's temper was a little more irritable than Xiao Yi, looking at the paternity test on the table, he threw it directly to Helan head-on, raised his voice and said: "Take a good look, think it clearly, if you dare to hide it, we will detain you as a suspect for 1 month."

Helan was frightened and sweated profusely when he heard this: "I said, I said, I said everything, please don't detain me, the one at home is still waiting for me to come home and cook."

"Fifteen years ago, I bought a boy from a trafficker, because after giving birth to a girl, the doctor suddenly told me that I would not be able to have children in the future, and if I had another child, it would be life-threatening because I had a genetic history of heart disease. That boy is now Liu An. Helan Dao.

"What was Liu An's name before he was adopted by you?" Xiao Yi asked.

"Ouyang Tuohai ......," Helan replied.

"Are you sure?" Liu Xiaodong said.

"Hmm. At that time, I felt that the person with this name was definitely not an ordinary person, so in order not to attract attention, I changed my name to Liu An. Helan Dao.

After another 20 minutes, Helan was released after asking some relevant questions.

Xiao Yi sat in the office and watched the suicide case of the college three years ago, the person who committed suicide was also called Ouyang Tuohai, and these two people must be related. He searched and read a little Ouyang Tuohai's report from a few years ago, and found that Ouyang Tian had released Ouyang Tuohai's missing person notice.

It also means that they are father and son, but the two Ouyang Tuohai, maybe this is really a coincidence, or someone did it on purpose.

can also explain Ouyang Tian's motive for killing. Suddenly, he thought of something, since he was going to kill the person who forced Ouyang Tuohai to death 3 years ago, he looked at the information on the table. Among them, the most humiliating ones are the 4 people in Liu An's dormitory, which means that there will be dead people below.

He was about to call Wang Jun. Wang Jun's phone number was displayed on the phone.

"Team Xiao, it's not good, Wang Xing suddenly disappeared from the school today, and I'm checking the surveillance now." Wang Jun's anxious voice came.

"Chemistry teacher Ouyang Tian is the murderer, you keep an eye on him for me, now let's go to school immediately." After Xiao Yi finished speaking, he left the police station in a hurry, along with Liu Xiaodong.

"Captain, is the murderer really Ouyang Tian? But Ouyang Tuohai is his son, and they all say that tiger poison doesn't eat children. Liu Xiaodong said.

"The person who committed suicide three years ago is also called Ouyang Tuohai, I suspect that the file three years ago was tampered with, maybe the person who committed suicide was not Ouyang Tian's son, and now he killed his own son." Xiao Yidao.

"Captain, you were transferred to the archives, who dares to break ground on your head and don't want to live." Liu Xiaodong didn't believe it.

"Hurry up and drive, I suspect that Wang Xing was arrested by Ouyang Tian, and I guess I will do it tonight." Xiao Yi said in a hurried tone.

After about 1 hour, the two came to the school and found that Wang Jun was sitting in Ouyang Tian's office, the two of them didn't say a word, and Ouyang Tian didn't seem to see Wang Jun still where to correct his homework.

"Captain...... Do you want to ......" Liu Xiaodong was interrupted by Xiao Yi before he finished speaking.

"Do you have proof?" Xiao Yi asked.

"It seems that Captain Xiao is really as powerful as rumored, and it only took 3 days to suspect me. But do you have proof? Ouyang Tian watched Xiao Yi come in and said lightly.

"No, because everything was calculated by you, you calculated that Zhang Liang would return to the dormitory when the power went out, and you also knew that Zhang Liang would help you erase all the evidence when he saw Liu An dead. Although he doesn't know that you killed people. Xiao Yi said.

"In that case, there is no evidence. You can't arrest me, please go back, I'll have to go to class later. Ouyang Tian said with a smile.

"Let's go, I want to say a word when I leave, do you think the person you killed is really the murderer who forced Ouyang Tuohai to death?" After speaking, Xiao Yi left the office with the two of them.

Ouyang Tian watched Xiao Yi leave uncertainly, he was a little skeptical that Xiao Yi's words were true, or if he deliberately deceived him in order to catch him. If it was true, he did not dare to imagine the consequences.

"It won't be true, it won't be, he won't lie to me, I've been looking for Tuohai for more than 10 years......" Ouyang Tian kept denying himself in his heart.

"Captain, did he really kill the man? But I don't feel like it, he doesn't have time to kill. Wang Jun was a little puzzled.

"You must find Wang Xing, Liu Xiaodong, you go and mobilize the police and auxiliary police of the surrounding police stations, you must find someone before Ouyang Tian gets off work, I will go back and interrogate Zhang Liang, Wang Jun, you are staring at Ouyang Tian here, do you have his hair or other things?" Xiao Yidao.

"Yes, Captain. I collected his hair when you said he was a murderer. As he spoke, Wang Jun took out a small storage bag from his pocket, which contained a few hairs.

Xiao Yi took the key in Liu Xiaodong's hand and drove back to the police station directly. He walked directly into the forensic office, woke up Liu Ruoyun, who was sleeping on the table, and said, "Thank you for your hard work, do a DNA comparison of this hair." It's the guy who committed suicide in college three years ago. ”

When Liu Ruoyun heard this, she instantly fell asleep. I went straight to the archives and got the file of the suicide three years ago.

Zhang Liang saw Xiao Yi with a serious face, and was a little frightened. However, still think of something, take a deep breath to calm yourself.

"Zhang Liang, I found your footprints and fingerprints at the scene of Liu An's death, explain what happened?" Xiao Yi opened the voice recorder and asked.

"How is it possible, I obviously took care of everything......" Before he could finish speaking, he stopped, his eyes widened, and his face was full of anger.

"You lied to me, obviously you didn't find anything, how could you know where my fingerprints were, otherwise you would have arrested me a long time ago."

The corners of Xiao Yi's mouth rose slightly, and his fox-like eyes stared at Zhang Liang and said, "Say, how did you erase the traces of the murderer." And why did you kill Liu An. ”

Zhang Liang instantly sat down backwards, he was fooled, from the time the other party entered the door, he was calculated by the other party, and now he can't hide it.

He said: "At 6:50 that day, Ouyang Tian, the chemistry teacher, said that he would open a small stove for the four people in the same dormitory for us, because we were all on the shortlist of escorts. Because of an accident, I found out that there were only 3 people on the escort list. ”