Su Cheng glanced at Zuo Luo and said, "But however, this doctor on duty has a strong subjective evidence of innocence, and the resident doctor on duty on the night shift works from 11:30 to 8 o'clock the next day. He was supposed to work late, but the doctor contacted him at night and said that his father's train was late, so he asked him to work until two o'clock first. At two o'clock, the original night doctor contacted him again, and his father brought too many souvenirs, and he lived on the seventh floor without an elevator, or even a corridor light. When I was carrying something, I took a wrong step and broke my foot. I have analyzed the situation, and I have not confirmed the testimony for the time being, if the testimony is true, I don't think the murderer will calculate the unexpected factors such as the delay of the train and the broken foot. This case is a relatively urgent premeditated murder case, which is very contradictory...... This contradiction cannot be resolved for the time being. So I personally rule out the possibility of the inpatient doctor on duty committing the crime. ”

In the case that all medical devices such as intravenous drip did not detect cyanide, Su Cheng believed that Liu Yan must cooperate with Liu Yan to take poison, and inferred from the reason why Liu Yan pretended to be dead, Su Cheng believed that Liu Yan was automatically taking poison. Liu Yan pretended to be dead just to take poison...... As for why, Su Cheng put it aside first. In the case of Liu Yan being controlled, she can still get cyanide, then there must be a second person involved, as long as this person is dug out, all the truth will be revealed.

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

"Let's think about 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 poison to Liu Yan." The second thing is to drop the bag of first-aid medicine. It was explained before that it was premeditated, the medicine was probably ready, and the poison was also ready. Ask, how many people did the murderer have. ”

"......" Zhang Liang and Zuo Luo glanced at each other and didn't know.

Su Cheng said: "This question is too difficult for you, then ask a simple question, the forensic doctor did not find cyanide from his hands or other places, it is likely that the cyanide is a capsule." So where did Liu Yan hide the cyanide? The closest visitor to Liu Yan's illness was the doctor on duty, six o'clock. At 6:10 a.m., Liu Yan became ill. After the doctor on duty is excluded, the time to deliver the poison becomes interesting, because the location where the poison is hidden is more interesting. ”

Where is the capsule cyanide hidden? Zhang Liang's eyes lit up: "Could it be 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, with no pockets. After getting into the emergency bed, the chest is torn, the hands are open, and almost the whole body may be touched, and it is not appropriate to hide it on the body. Could it be that Mao Xiaolan's case that happened in the past was a copy of the case hidden in the hospital bed? No, this time it was different, last time it was put in the hospital bed. This time, Liu Yan's ward temporarily made bed sheets, and she had the experience of the last time. Liu Yan was handcuffed, there were watchmen around her, and she hid it too well, and Liu Yan couldn't get it.

Zoro thought of this and said, "Hair." "After Liu Yan was arrested, her hair was put down and checked, and it was re-tied, with a ponytail and multiple leather bands, which was very strong. After Liu Yan entered the hospital, she remained motionless, initially thinking that she was pretending to be dead, but in fact it was to preserve the cyanide in her hair.

Zuo Luo suddenly said again: "I know, there is only one murderer, he not only gave Liu Yan poison, but also can justifiably change the medicine." ”

"Yes, great, go on. ”

Zuo Luo didn't bother to pay attention to him, and said, "It's the police, to be exact, it's the sheriff on duty who sent Liu Yan to the hospital." "The sergeant on duty is in charge of things at night, such as the situation of people in the temporary detention center, and answering calls from the command center. Dispatch of forensic doctors, physical evidence teams, etc. It is a general person in charge of dealing with various affairs at night.

Zuo Luo said: "Don't worry, wait for the video, if the sheriff is a bad person, he must have conducted a preliminary inspection of the first-aid medicine on the grounds of checking the safety of the drug." In fact, this is also the responsibility of the police. He has the ability to hide cyanide in Liu Yan's hair, and he also has the opportunity to drop the medicine. However, if the assumption is correct, I have a question, it may be cyanide given before and after admission, why did Liu Yan take the medicine until 6:10?"

Su Cheng said: "Zuo Luo has made progress, and asked about the key points, what kind of medicine does Liu Yan think the murderer gave her?"

Zuo Luo ignored Su Cheng's attitude, immersed himself in the case and replied while thinking: "You can temporarily suspend the interrogation, or transfer the medicine to the place of detention...... I think Liu Yan's purpose is to be hospitalized. This medicine will cause various temporary surname problems, and Liu Yan's level is not enough to live in the special care ward, and will only live in the general ward. Liu Yan thinks that her helpers will save her when the police are short of manpower to guard her. Or Liu Yan, with the help of helpers, can escape on her own. "Liu Yan's crime is not serious, and the attention of the police should not be high, but there is a Ye Na, Ye Na and Zuo Luo, Zuo Luo pulled Su Cheng, which is equivalent to directly doing Z7.

Su Cheng nodded: "I think that from Liu Yan's undercover to Liu Yan's murder in the end, this series should be the result of planning and cooperating with each other." The people who made this proposal were amazing. Su Cheng's subtext is that judging from these details, it should be an action plan written by the Ma Bureau.

Zuo Luo looked at Zhang Liang: "Is the sergeant on duty necessarily on duty last night?"

"Yes, he was a night sheriff all month, and in fact there were not many people who liked the night sheriff's job, not only because he had to stay up late, but also because he did a lot of chores. The sergeant on duty was very young, about thirty, and before he got married, he took the initiative to take on the job of night sergeant. The reason he said it was that he was a night owl, and he liked it, and the night was quieter. Originally, he was going to change ten days ago, but he said that he would change the sergeant of his shift, and not long after the child was born, his superiors agreed that he would be a night sergeant for another month. ”

After speaking, Zhang Liang asked, "Are you sure it's him?"

"Not sure, waiting for the video. ”

"But what about the motive?"

Zuo Luo thought for a long time: "It's hard to say anything now, Team Zhang, if you want to arrest him, you will control it purely according to the suspect." This means that we technically think he is suspicious, not because of various speculations, logical theories that believe he is suspicious. ”

Su Cheng saw that Zhang Liang didn't understand, and said: "Just don't say so much, just think that he is suspected of committing a major crime...... Haven't you seen the video yet?"

Zuo Luo looked at his phone and hesitated: "It's already in the mailbox...... Do you use your phone to watch it? The traffic will die very quickly. ”

Su Cheng said: "Zuo Luo, human life is at stake. "It's not your own mobile phone, what is dead traffic.

Zuo Luo didn't understand Su Cheng's set, once Su Cheng was serious and straight, he was actually snickering, gloating.

……

In the video, after the police officer on duty handcuffed Liu Yan, he came out of the inpatient ward and went to the emergency area to the dispensing room behind the nurse's desk. Zoro then took notes with the nurse who was in the dispensing room at the time, and the nurse said that the sheriff looked at the first-aid medicine for a while and asked if it was complete. The nurse confidently replied yes, and the sheriff was satisfied and left. She didn't mention this in the previous transcript.

The sergeant on duty was arrested at home, it was noon, he was still sleeping, and a female criminal police officer he had a good impression of called him, saying that he happened to see cherries on sale, and remembered that he mentioned that he liked to eat, but it was too expensive to be willing to buy. People bought it nearby and sent it downstairs. The sheriff asked her to come up, and the female detective said that she had something else to do and asked him to hurry up. The sheriff went downstairs and saw the other two male detectives of the female criminal police team, stepped forward to say hello, took the cherry, and was about to talk a few words, he was controlled.

The sergeant on duty was surprised, and the female detective told him that she didn't know anything and that it was an arrest task assigned by her superiors. The people were sent to the car and sent to the Z department, and at the same time, Fang Ling and Bai Xue arrived, blocked the house of the police chief on duty, and waited for a search warrant.

……

The sergeant on duty was named Fang Qi, and from the time he was arrested until he sat in the interrogation room for three hours, he asked people why he was arrested and what he had done.

Zuo Luo, Su Cheng and Zhang Liang sat in front of him, but he didn't ask, and looked at the three of them quietly, not knowing what he was thinking.

Zhang Liang spoke first: "Fang Qi, our criminal police team really underestimates your talent, you can make such an excellent criminal plan, I admire the five-body surrender after reading it...... It's the plan you put in the recycle bin of your computer and empty the recycle bin. But your computer knowledge seems to be poor, not to mention the technical department, I shrimp search knows how to recover recent files deleted in the recycle bin. ”

Fang Qi smiled casually: "Hehe, it's really a day." Why did you find me so quickly?"

Su Cheng said: "We have a few questions we want to ask. ”

Say. ”

Su Cheng said: "There is only half of the plan, the part of your action, when you call, Plan X is that someone will send you a capsule and a bottle of medicine, according to the video at the door of the criminal police team, you should get it at 5:30 in the afternoon." Waiting for Liu Yan to appear, he went to the detention room to check, and stuffed the capsule into the place where Liu Yan's hair was tied with a rubber band. The plan also has a detailed explanation of the location of the plug and what kind of hair the target person will tie. And how do you change the dressing, what will be the scene at that time, and put forward a variety of suggestions. What makes me strange is...... The plan doesn't say killing. ”

Fang Qi replied: "Forensic doctors can't solve cases, forensic doctors have completed a very important step, dutifully complete their work, as for whether the criminal police can rely on forensic reports to solve cases, it is not a matter for forensic doctors to take care of." "The subtext is, I just do things.

Su Cheng said, "Who is your boss?"

"I'm a police officer and I know the law. Murder by taking advantage of my position, even if I confess to others, I am guilty of a capital crime. What about building credibility...... I don't confess to anyone else, and my father and mother may be taken care of. ”

Su Cheng, who answered this, couldn't understand it, the plan was very professional and very good, and all kinds of emergencies were taken into account. But he didn't tell Fang Qi what medicine, what the purpose was, and what the reason was. I guessed that it should be a plan written by the horse bureau. But Fang Qi actually mentioned that his father and mother would be taken care of, and it seemed that he was a bad guy for the sake of profit. The attitude is very calm, and it is even more surprising. Assuming that it is for the sake of the spirit of social justice, it will not mention the interests first. Assuming that it is for the sake of profit, this is not the time to be calm.