Cai Shude can become a doctor, his psychological quality must be excellent, and it is impossible to expose flaws in a few words.

From Cai Shude's current performance, He Jiahui can judge that Cai Shude is the kind of criminal suspect who doesn't shed tears when he doesn't see the coffin, and if he can't produce conclusive evidence, he will definitely not admit his crime.

"Since Mr. Cai wants to see the evidence, then I will show you the evidence!" He Jiahui looked at Cai Shude calmly, which made Cai Shude feel a little weak.

He Jiahui continued: "In this case, the three suspects were directly locked at the beginning, so when our police solved the case, they also focused on screening the suspects, thus ignoring another important point.

That's where the poison comes from! The deceased died from an overdose of tranquilizers, and where these tranquilizers came from is not taken seriously by us. We are thus ignoring important clues.

The tranquilizers that caused the death of the deceased were all controlled drugs, which could not be purchased by ordinary people, and they could only be prescribed by a qualified doctor.

And even if the doctor prescribes these tranquilizers, the patient will not be able to get their hands on them, let alone use them privately, and they need to be used by professional medical personnel in designated medical institutions.

So these tranquilizers come from your hospital. All kinds of tranquilizers are the conventional treatment drugs used in oncology, and as an oncologist, you can use your position to prescribe tranquilizers. ”

"Hehe, this is the evidence of what you said? It's ridiculous! Cai Shude continued with a disdainful face: "I am not the only doctor in our oncology department, we have more than a dozen doctors, and each of them has the right to prescribe tranquilizers.

In addition to our oncology department, there are hundreds of doctors in other departments, doctors who have the right to prescribe tranquilizers, and they use tranquilizers every day in the anesthesia room, why don't you go to them? ”

"Because on the day of the crime, you gave two patients a doctor's order to inject 25 mg of promethazine plus 25 mg of chlorpromazine once intramuscularly. In the syringe killed by the deceased, the police detected promethazine and chlorpromazine. ”

He Jiahui paused in his voice and continued; "You took advantage of your position to prescribe these two tranquilizers to the patient, and when the pharmacy sent the tranquilizers to the oncology department, you secretly went to the dispensing room, replaced these two tranquilizers with saline, or something else, and waited until the early hours of the morning, and then you used the stolen tranquilizers to kill the deceased!"

"Promethazine and chlorpromazine are both routine treatments in our oncology department, which can effectively relieve the physical pain of patients. Every one of our oncologists has prescribed this kind of drug to patients, and you can't just say that I am a murderer because I have prescribed these two drugs! ”

Cai Shude smiled slightly, and continued quite confidently: "What's more, you also said just now, my patient's doctor's order is 25 mg of promethazine and 25 mg of chlorpromazine. The two patients combined had only 50 mg of promethazine and 50 mg of chlorpromazine.

This amount of medicine is too small, injected into a person's body, it can't kill a person at all, and if it's an adult, it may not be able to incapacitate him.

In clinical treatment, some patients with more severe physical pain will use 50 mg of isoacetone plus 50 mg of chloroacetone in one person. If you don't believe me, you can go to another doctor to verify.

Since the dosage is not enough to be lethal, even if your speculation is true, I stole these two tranquilizers and injected them into Dr. Liu's body, but it is impossible to kill Dr. Liu!

Ah sir, before jumping to conclusions in the future, remember to consult a professional first, so as not to reason for a long time, it seems to make sense on the surface, but in fact it is a joke! ”

In the face of Cai Shude's ridicule, He Jiahui was unimpressed, and he continued; "50 mg of promethazine plus 50 mg of chlorpromazine is indeed not enough to kill an adult, but what if you add 50 mg of midazolam?"

"What midazolam?" Cai Shude immediately put on an unclear look, but such a quick reaction time confirmed his weakness.

He Jiahui continued: "For the average adult, the maximum amount of midazolam injection is 15 mg at a time. If it is exceeded, it will be dangerous, so 50 mg of midazolam will be used in an infusion pump.

If there is no infusion pump, 50 mg of midazolam, plus 50 mg of promethazine and 50 mg of chlorpromazine, are all injected into the human body, Dr. Cai, please use your specialty to tell me, can this be fatal? ”

Cai Shude pondered for a moment before he spoke: "50 mg of midazolam, 50 mg of promethazine, plus 50 mg of chlorpromazine, if injected together, it will indeed pose a danger to life. ”

He Jiahui immediately said: "Among the syringes that killed Dr. Liu, in addition to promethazine and chlorpromazine, midazolam was also detected!" ”

"So what does this have to do with me? I didn't prescribe midazolam to the patient! Cai Shude argued.

"You didn't prescribe midazolam to your patients, but other doctors did. We checked the doctor's order, and on the afternoon of the incident, Dr. Wang from your oncology department prescribed 50 mg of midazolam plus 50 ml of sodium chloride injection for the patient in room 3, pumping it at a rate of 2 ml per hour.

And on that day, you were also on the afternoon shift, right? In other words, you and that Dr. Wang are working together, and when he gives a doctor's order, you can know it as soon as possible, even if you are next to you.

When you saw Dr. Wang's medical order for Ward 3, you decided to carry out the murder plan, so you also wrote wills for promethazine and gchlorpromazine to the patients in the other rooms.

Then you secretly swap the three tranquilizers for saline. Those real tranquilizers were used by you to kill Dr. Liu, right? Ho continued.

"Tell the truth!" Cai Shude snorted coldly: "Speaking of now, it's just your reasoning, what about the evidence?" Didn't you say there was evidence? You've got the evidence! ”

"The police have inspected the infusion pump in Ward 3 and confirmed that there is no midazolam in it, only saline. Here's the proof! He Jiahui said.

"What kind of evidence is this? The patient in ward 3 is not my responsibility, his doctor's order is not issued by me, the work of drug administration and treatment is done by the nurse, and there is no midazolam in the infusion pump, what does it have to do with me! Cai Shude immediately defended.

"With the management level of your hospital, every link of the treatment process will be recorded, and midazolam is a drug like a tube, how can it disappear inexplicably? Unless someone is on guard and stealing!

And the syringe that killed Dr. Liu happened to have midazolam in it, which also shows that midazolam, which was supposed to be used for patients in Ward 3, was taken by the person who guarded and stole himself! Ho Ka-fai responded.

"Even so, why do you say that the murderer is me? We also have several doctors in the oncology department, so can't others be able to guard and steal? Cai Shude asked rhetorically.

"Because when Dr. Liu Guoqiang died, you were the only one at the scene, and the other doctors were not at the scene! Someone who was not at the scene, of course, could not be the murderer. He Jiahui said.

"What about the nurse? Nurses often go to the dispensing room, and it's possible for nurses to steal from themselves, right? That night, in addition to me, Zhou Yuting and Deng Qiaomei were also there, and they may have stolen tranquilizers to kill people!

Besides, haven't you already found the key in Zhou Yuting's pocket? This is enough to prove that she committed the blame after the murder! Cai Shude immediately retorted.

He Jiahui smiled slightly: "Doctor Cai, until now, haven't you realized what the problem is?" Then let me remind you that the doctor's order for 50 mg of midazolam in ward 3 was executed at eight o'clock in the evening! ”

Cai Shude was stunned for a few seconds, his face changed slightly, obviously he had already thought of the key, but he immediately forced his composure and tried to keep his calm.

"It's really not a cry when I don't see the coffin, I have to explain everything!" He Jiahui shook his head helplessly, and then said:

"The execution time of the doctor's order in Ward 3 is 8 o'clock in the evening, which means that if the murderer wants to steal Midazolam in Ward 3, it must be before 8 o'clock in the evening, otherwise the drug will be used on the patient.

And Zhou Yuting and Deng Qiaomei, the two nurses, were on the night shift and arrived at the hospital at nine o'clock in the evening, at this time it was already past the time for ward 3 to carry out the doctor's orders, and it was impossible for them to steal the midazolam in ward 3! There is no possibility of committing a crime.

You were the only one who was on the afternoon shift, and you stayed in the hospital from afternoon to evening, and among the three of you, you were the only one who could steal Midazolam from Ward 3! Dr. Chua, what else do you have to say now? ”

Cai Shude gritted his teeth, he wanted to continue to argue, but found that he had no way to argue.

The execution time of a midazolam doctor's order directly ruled out the possibility of the other two people committing crimes, and also locked the murderer on Cai Shude's body.

Although the key was found on Zhou Yuting before, in the face of the exclusion law, this kind of evidence can no longer prove that she is suspicious, even if she goes to court, the interests of the doubt belong to the defendant, and Zhou Yuting will not sue.

As the classic saying goes, if you eliminate all impossibilities, the rest of the impossible is also the truth!

After being silent for more than half a minute, Cai Shude finally said: "I have no grievances with Liu Guoqiang, why should I kill him!" ”

"The reason why you killed Dr. Liu should be because of the "Medical Exemption Certificate", right?" He Jiahui asked.

"You guys even found out about this?" Cai Shude's expression changed greatly, and then he slumped in his chair.

He Jiahui continued: "When we asked Deng Qiaomei before, she mentioned that the deceased Dr. Liu Guoqiang had a conflict with a doctor named Sun Jiacheng, and the reason for the conflict was a problem with a scientific research project.

And this Dr. Sun Ka-shing has now emigrated to the UK, so there is no possibility of committing the crime, and the police did not investigate him in depth at that time. But just on the way here, I called Dr. Sun Ka-shing.

When he learned that Liu Guoqiang had been killed, he immediately guessed that the murderer was likely to be you, and Dr. Sun Ka-shing also revealed to us that your motive for killing Dr. Liu Guoqiang.

According to Dr. Sun's student account, the conflict between him and Dr. Liu Guoqiang was indeed due to a scientific research project at the time, and the two of them were fighting for funding at that time, and the funds provided by the hospital were only enough for one project.

At the critical moment of fund approval, Dr. Liu Guoqiang found Dr. Sun Ka-shing's handle, and he used this handle to threaten Dr. Sun to give up his scientific research project. And this trick is that Dr. Sun Ka-shing once sold a fake "Medical Exemption Certificate".

Influenza strikes every winter, and the government has also launched a free flu vaccination program, but some citizens have underlying diseases, so they are not suitable for influenza vaccination, and at this time, a doctor needs to issue a "Medical Exemption Certificate" to be exempted from vaccination.

For various reasons, some people don't want to get vaccinated, but if they don't get vaccinated, it will affect their normal social and life, so these people go to the doctor to prescribe a fake "Medical Exemption Certificate", so that they don't need to get the flu vaccine.

This phenomenon has also given rise to many black-hearted doctors, who specialize in issuing fake "Medical Exemption Certificates", and a certificate can be sold for 5,000 yuan. Selling a hundred copies casually is 500,000 yuan, and for doctors, this is just a hundred signatures.

Dr. Sun Ka-shing once made this kind of black money, and after Dr. Liu Guoqiang found out, he became a threat to him. It is also for this reason that Dr. Sun Ka-shing immigrated to the United Kingdom, and he feared that if he continued to stay in Hong Kong, he would be blackmailed by Dr. Liu Guoqiang.

Moreover, there is no extradition treaty between Britain and Xiangjiang, he went to the United Kingdom, and Xiangjiang's laws cannot punish him, and the police cannot arrest him. It is for this reason that he dared to reveal to us the truth about his immigration to England.

At the same time, Dr. Sun Ka-shing also revealed another news, the person who issued the fake "Medical Exemption Certificate" back then, Dr. Cai Shude, and Dr. Liu Guoqiang also knew about it.

I guess Dr. Liu Guoqiang must have threatened you with this too, right? That's why you decided to kill Dr. Liu. That's your motive for killing! ”

There is one thing that He Jiahui did not say, that is, in order to get Cai Shude's motive for killing, he promised Sun Jiacheng that the police would not pursue him for issuing a fake "Medical Exemption Certificate".

After Sun Jiacheng got the promise of the police, he was willing to tell the truth about immigrating to the UK that year, and Cai Shude's issuance of a fake "Medical Exemption Certificate".

If it doesn't work, who will confess to the police about their crimes?

This kind of exchange of conditions is very common in the Anglo-American legal system, and Ho Jiahui can be regarded as learning and using it now, and following the local customs.

The issuance of a fake Medical Exemption Certificate is either convicted of fraud or fabrication of a false instrument under HeungKong's Crimes Ordinance. The penalty for the former is based on the amount, while the latter carries a maximum sentence of 14 years in prison.

At the same time, doctors have also violated professional ethics and will be punished by the Medical Council.

The future is ruined, and the 14 years in prison are indeed enough for people to choose to take risks and choose to kill people.

Seeing that his motive had been found out by the police, Cai Shude knew that his future was over, and at this time he finally saw the coffin and no longer chose to die.

Cai Shude said slowly; "That's right, I did it. Liu Guoqiang was killed by me! It's all his fault for blackmailing me! Isn't he planning to buy a house and get married? But he couldn't even get a down payment!

But it's normal to think about it, this guy usually spends a lot of money, and he also dated two women at the same time, even if the income of being a doctor is relatively high, he can't save much money. ”

"So Dr. Liu Guoqiang extorted money from you for issuing a fake "Medical Exemption Certificate"?" He Jiahui asked.

"That's right, he used the "Medical Exemption Certificate" to blackmail me and asked me for 3 million, but my house is also repaying the loan, how can I have so much money! When he saw that I couldn't afford it, he asked me to sell my house to raise money. ”

Cai Shude showed an excited expression: "I bought that house with hard work, for this house, I studied hard, and after becoming a doctor, I worked day and night!"

In order to earn a down payment, I even violated the professional ethics of doctors by issuing fake "Medical Exemption Certificates". I sacrificed so much to buy a house, this house is the hope of my life, it is my life, how can I sell it!

And Liu Guoqiang actually asked me how the property around my house is, does he want to live near my house, can he often blackmail me in the future? I couldn't keep being blackmailed by him, so I decided to kill him without doing anything! ”

Cai Shude said and took a deep breath, and then said: "The killing method is the same as what you reasoned, I gave him sleeping pills, and while he was asleep and couldn't resist, I injected him with an overdose of sedatives.

I put the syringe in Deng Qiaomei's cabinet, and then deliberately told the police about the relationship between them, directing the direction of the police's investigation to Deng Qiaomei.

Deng Qiaomei didn't have the key to the cabinet, and this accident caused my plan to completely go bankrupt, so I could only continue to blame and secretly stuff the key to the cabinet into Zhou Yuting's pocket.

Who knew that Zhou Yuting found the key in her pocket, and this stupid woman didn't call the police, but put the key in my pocket, she wanted to blame me.

But I found out that she was not wearing gloves, so she would definitely leave fingerprints on the key, so I simply calculated and acted in a play, using the fingerprints on the key to make the police think that she was the real murderer!

Everything went smoothly, you took Zhou Yuting away, I thought I was safe, but I didn't expect to be recognized by you in the end! Sir, how did you come up with the idea of checking the infusion pump in Ward 3? ”

"Because the patient's family in Ward 3 said that his father had been injected with tranquilizers, but nothing worked, so I immediately realized that I should re-investigate the source of the tranquilizers, and then I caught you." Ho Ka Fai did not hide it.

"My careful plan was planted in the patient's family." Cai Shude laughed self-deprecatingly.

"It's not about how well planned, it's about making the mistake in the first place!" He Jiahui glanced at Cai Shude with some pity, and then said:

"In order to make up the down payment on the house, you betrayed your professional ethics as a doctor and issued a fake Medical Exemption Certificate to others. This first step, you are on the wrong foot.

It is precisely because of this mistake that you will be caught by Liu Guoqiang, and he will blackmail you and even force you to sell your house. The house you obtained by illegal means will eventually be taken away by others by illegal means.

In order to keep your house and not be blackmailed in the future, you chose to commit a worse crime and kill Liu Guoqiang. In this second step, you are going wrong again.

One wrong step, one wrong step, it's you! If you had kept the professional ethics of a doctor and had not sold a fake Medical Exemption Certificate, you would not have had these later things.

Liu Guoqiang blackmailed you, although it was his fault, but the root cause of the development of things to this point is actually your choice. You have chosen the wrong path, and now, you can only go to Stanley Prison and use the rest of your life to atone for your sins! ”

Thank you for subscribing. As for the motive for the killing, it was written as influenza in order to pass the trial, and the logic was somewhat weakened. This case is over, and the next case has been conceived, it is a more complicated serial murder case, please allow me to delay for a day and ask for leave tomorrow.

(End of chapter)