Su Cheng gave Zuo Luo a blank look and said, "But, however, this doctor on duty has a strong subjective evidence of innocence. The doctor on duty on duty at night was from 11:30 to 8:00 on the next day. He originally had night shifts, and the doctor contacted him at night, saying that his father's high-speed train was late, so he asked him to serve until two o'clock first. At two o'clock, the doctor on the night shift contacted him again. His father brought too many local specialties. He lived on the seventh floor without an elevator or even no corridor lights. When he moved things up, he took a wrong step and sprained ankle. I analyzed the situation and had not confirmed the testimony yet. If the testimony was true, I don't think the murderer would calculate the accidental factors such as late high-speed train and sprained ankle. This case is a relatively urgent premeditated murder case, which is very conflicting... This contradiction cannot be resolved for the time being. So I personally ruled out the possibility of the doctor on duty on duty committing the crime."

When all the medical devices such as Did and Drip did not detect cyanide, Su Cheng believed that Liu Yan had to cooperate with the poison. In addition, the reason why Liu Yan pretended to be dead was inferred, Su Cheng believed that Liu Yan was taking poison automatically. Liu Yan pretended to be dead just to take poison... As for why, Su Cheng left it aside. When Liu Yan was controlled, she could still get cyanide, so there must be a second person involved. As long as this person was dug out, the truth would be revealed.

Zhang Liang was stunned: "Who else? Could it be a female doctor? Or my subordinate?"

"Let's think of a question first. How many bad people are there in this case?" Su Cheng said: "The murderer has to do two things. The first thing is to give the poison to Liu Yan. The second thing is to drop the first aid medicine. I have explained that there is a premeditation before. The medicine is probably ready and the poison is also ready. Ask, how many people are there in the murderer."

"..." Zhang Liang and Zuo Luo looked at each other, not knowing.

Su Cheng said: "This question is too difficult for you. Let me ask a simple question. The forensic doctor did not find cyanide from his hands or elsewhere. It is very likely that the cyanide is a capsule. So where did Liu Yan hide the cyanide? The visitor closest to Liu Yan's illness was the doctor on duty, at 6 o'clock. Liu Yan's illness was ill at 6 o'clock. After excluding the doctor on duty, the time for delivering the poison became very interesting because the location of the poison was more interesting."

Where is the capsule cyanide hidden? Zhang Liang's eyes lit up: "Is it anal..."

Su Cheng hurriedly said, "Hey, hey... our book is very serious."

Zuo Luo pondered that Liu Yan was wearing a detention center uniform before going to the hospital, without a pocket. After getting on the emergency bed, her chest was torn open and her hands were opened, and almost her whole body might be touched. It was not appropriate to hide it on her body. Could it be that the Mao Xiaolan case that happened before? Hidden on the hospital bed? No, this time it was different. Last time it was someone put it in the hospital bed. This time Liu Yan temporarily put the bed sheets in the ward, and she had experience last time. Liu Yan was handcuffed and had a surveillance person around her. She hid it so well that Liu Yan couldn't get it.

Zuo Luo thought of this and said, "Hair." After Liu Yan was arrested, her hair was put down and checked, tied it up again, tied it with a ponytail and multiple rubber bands, which was very strong. After entering the hospital, Liu Yan remained motionless. At first, she thought she was pretending to be dead, but in fact she was to preserve the cyanide in her hair.

Zuo Luo suddenly said again: "I understand, there is only one murderer. He not only gave Liu Yan poison, but also could change the medicine legitimately."

"It's not bad, great, keep going."

Zuo Luo didn't bother to pay attention to him and said, "It's the policeman, to be precise, it's the on-duty sheriff who sent Liu Yan to the hospital." The on-duty sheriff was responsible for night affairs, such as the situation of the temporary detention center personnel, and answering calls from the command center. He dispatched forensic doctors, physical evidence teams, etc., and was the comprehensive person in charge of handling various night affairs.

Zuo Luo said: "Don't worry, wait for the video. If the sheriff is a bad person, he must have conducted a preliminary examination of the emergency medicine on the grounds of checking the safety of the medicine. In fact, this is also the responsibility of the police. He has the ability to hide cyanide in Liu Yan's hair and has the opportunity to lose the medicine. However, if the assumption is correct, I have a problem. It may be the cyanide given before and after admission. Why did Liu Yan take the medicine until six o'clock?"

Su Cheng said: "Zuo Luo has made progress and asked about the key points. What medicine did Liu Yan think the murderer gave her?"

Zuo Luo ignored Su Cheng's attitude and thought while immersing in the case, answering: "You can temporarily not be interrogated or transfer the medicine at the detention location... I think Liu Yan's purpose is to be hospitalized. This medicine will cause him to have various temporary surname problems. Liu Yan's level is not enough to stay in the special care ward, so he will only stay in the ordinary ward. Liu Yan believes that his helper will save himself while the police are not in sufficient staff. Or Liu Yan can escape by himself with the help of his helper." Liu Yan's charge is not serious, and to reason, the police should not pay much attention to it, but Ye Na, Ye Na and Zuo Luo, Zuo Luo will pull Su Cheng, which is equivalent to doing it directly.

Su Cheng nodded: "I think from Liu Yan's undercover agent to Liu Yan's final murder, this series should be a result of planning and cooperation with each other. The person who made this plan was very powerful." Su Cheng's subtext was that from these details, it should be an action plan written by Director Ma.

Zuo Luo looked at Zhang Liang: "Did the sheriff on duty have to be on duty last night?"

"Yes, he is a night sheriff all month. In fact, there are not many people who like to work at night sheriff. Not only because he has to stay up late, but also because he does a lot of chores. The sheriff on duty is very young, around thirty years old, and before he got married, he took the initiative to take on the job of the night sheriff. The reason he said was that he was a night owl, and he liked to read novels, so the night was quieter. He originally wanted to change ten days ago, but he said he wanted to change the child of his shift. Not long after he was born, his superiors agreed to work as a night sheriff for another month."

After saying that, Zhang Liang asked, "Is it him?"

"Unsure, wait for the video."

"But, what about the motivation?"

Zuo Luo thought for a long time: "Now there is nothing to say. Team Zhang, if he wants to arrest him, he will be controlled purely by the suspect. It means that we technically think he is suspected, not because of various speculations, and logical theory believes that he is suspected."

Seeing that Zhang Liang didn't understand, Su Cheng said, "Just don't say so much, just think that he is a major suspect in the crime... Has the video not come yet?"

Zuo Luo looked at his phone and hesitated: "I have arrived at the email address... Do you use your phone to watch it? The traffic will die very quickly."

Su Cheng said seriously: "Zuo Luo, life is at stake." It's not his own mobile phone, what's the point of dying traffic?

Zuo Luo didn't understand Su Cheng's trick. Once Su Cheng was serious and serious, he was actually laughing, smirking with gloating.

...

In the video, the on-duty sheriff handcuffed Liu Yan, came out of the inpatient ward and went to the dispensing room behind the nurse's desk. Zuo Luo made a record with the nurse who was in the dispensing room at that time. The nurse said that the sheriff looked at the first aid medicine for a while and asked if the medicine was complete. The nurse was very confident in answering yes, the sheriff expressed satisfaction and left. She did not mention this situation when she took the record before.

The sheriff on duty was arrested at home. It was noon and he was still sleeping. A female detective who had a good impression of him called him and said that he happened to see a discounted cherries. I remember that he mentioned that he liked to eat, but it was too expensive and he couldn't bear to buy it. The person was nearby and bought it and sent it downstairs. The sheriff asked her to come up. The female detective said that she had something to do and asked him to hurry up. The sheriff went downstairs and saw two other male detectives from the female detective team. He came forward to say hello, took the cherries, and was about to chat for a few words, and he was controlled.

The police officer on duty was surprised. The female detective told him that she knew nothing and that it was an arrest task assigned by her superiors. The person was sent to the car and sent to Department Z. At the same time, Fang Ling and Bai Xue arrived and blocked the sheriff's home on duty, waiting for a search warrant.

...

The sheriff on duty was named Fang Qi. From the time he was arrested to the time he sat in the interrogation room, he asked when he saw someone, why did he arrest him and what did he do?

Zuo Luo, Su Cheng and Zhang Liang sat in front of him, but he ignored him and looked at the three of them quietly, not knowing what they were thinking.

Zhang Liang said first: "Fang Qi, our criminal police team really underestimated your talent and could make such an excellent criminal plan. I admired it after reading it... It was you put it in the computer recycling bin and then clear the plan in the recycling bin. However, your computer knowledge seems to be poor. Not to mention the technical department, I can search for it and know how to recover the recent files that were deleted by the recycling bin."

Fang Qi smiled casually: "Haha, it's so late. Why did you find me so soon?" It's meaningless to argue, he did it according to the plan.

Su Cheng said: "We have a few questions to ask for."

"explain."

Su Cheng said: "The plan is only half. When you call you, activate the cx plan. The cx plan means someone will give you a capsule and a bottle of medicine. According to the video at the door of the criminal police team, you should have got it at 5:30 pm. Wait for Liu Yan to appear, go to the detention room to check, and stuff the capsules into the rubber band where Liu Yan's hair tied. There is also a detailed explanation of the position of the plug on the plan, and it also explains what kind of hair the target person will tie. And how you change the dressing, what scenes will happen at that time, and put forward a variety of suggestions. What surprised me is that... the plan did not say murder."

Fang Qi replied: "Forensic doctors cannot solve the case. Forensic doctors have completed a very important step and fulfilled their work diligently. As for whether the criminal police can rely on the forensic report to solve the case, it is not something that the forensic doctors must take care of." The subtext is, I just do things.

Su Cheng said: "Who is your boss?"

"I am a policeman, I understand the law. If I use my post to kill people, even if I confess other people, I will be a death sentence. As for credibility building... I don't offer other people, my parents may be taken care of."

Su Cheng couldn't understand this answer. The plan was very professional and was very good at doing it. He considered all kinds of emergencies. But he didn't tell Fang Qi what medicine, what was the purpose, and what was the reason. It was guessed that it should be the plan written by Director Ma. But Fang Qi actually mentioned that his parents would be taken care of, as if he was a bad person for the sake of interests. His attitude was very calm, which was even more strange. Assuming it was for the spirit of social justice, he would not raise the interests first. Assuming it was for the sake of interests, he should not be calm at this time.
Chapter completed!