"I'll tell you how you kill people. Conan said to Lu Chen, "Based on the available evidence, it can be inferred that there is probably such a process, "Last Monday, that is, the morning of Wei Qingya's death, you woke up early in the morning, and it is likely that a small amount of sleeping pills were put in Wei Qingya's water, causing Wei Qingya to fall asleep all the time. After doing all this, you went to your classmate's birthday party, and at noon you found someone who was not paying attention, and returned home, and at this time Wei Qingya had not woken up. “

"You power on a silver needle and insert it into Wei Qingya's chest, and when it is estimated that she is not saved, pull out the silver needle, after the needle is pulled out, there is no trace on the surface of the body, and then you return to the party again, and take the silver needle away and dispose of it when you leave. Wait until the evening to get home. ”

Conan pointed his finger at Lu Chen and said, " And after you got off work, Wei Qingya wasn't even dead, so you sent her to the hospital for rescue, because Wei Qingya has always had a bad heart, and the pinhole of a silver needle can't be seen with the naked eye, so Wei Qingya was naturally diagnosed with a heart attack, it stands to reason that your plan should be perfect to seamless, but you think that no one can see it, so you dare to agree with Wei Qingya's last wish and hand over the body to the school to make a specimen, but you never expected that first Fang Zege saw black blood in Wei Qingya's pericardial cavity, and then, that small pinhole was enlarged after being soaked in formalin, which allows us to have the most crucial evidence. ”

"It's so hard to make up a story for you kid. After listening to Conan's words, Lu Chen's face was still very calm, just like the calm he used to practice killing guinea pigs in the laboratory.

"According to what you say, then Wei Qingya's heart attack was also caused by me?"

"That's right. Fang Ze interjected at this time, "Since four years ago, you have been adulterating anti-heart rhythm drugs in the water or food that Teacher Qingya usually drinks, which caused Teacher Qingya's heart to suddenly become uncomfortable, and then you wantonly spread the bad heart of Teacher Qingya in the school, so that everyone has a preconceived impression and prepare for your murder in four years." ”

"Yes. Conan continued, "As a medical student who studied hard in college, you are absolutely precise in your dosage, and the anti-heart medicine you gave Wei Qingya only made Wei Qingya's heart uncomfortable, but it did not cause death, so after you laid the groundwork for four years, your murder will not arouse suspicion." ”

"Ridiculous. Lu Chen said, "I bought anti-heart rhythm drugs for four years, including the previous sleeping pills, these drugs are prescription drugs, and the purchase will be recorded. ”

"No, you did. Conan continued, "On the medicine shelves of the Pfizer clinic where you work, there are anti-heart rhythm drugs and sleeping pills, and it is too easy for you, as the only doctor in the clinic, to take away some medicines without leaving any records, but in fact, we don't need to check the records of four years ago, we only need to check the last time Wei Qingya went to the doctor because of heart discomfort, and according to the time to check the accounts of the clinic, we can find that there are some anti-heart rhythm drugs that can't find buyers at all, because their buyers are you!"

Lu Chen's calm face began to panic, indeed, from the surveillance video of the community to the pinhole on Wei Qingya's heart to the drugs that could not be found in the Pfizer clinic, no matter which of these three pieces of evidence was taken out alone, it was not certain that he was the murderer, but the problem now was that these three pieces of evidence appeared at the same time, and he had no chance of turning the tables at all!

It's over.

Lu Chen originally thought that what he was doing was seamless, so he dared to boldly hand over Wei Qingya's corpse to the school to be made into a rough specimen, but where did he think that it would be a hundred secrets.

It was just because of a simple pericardial cavity black blood that attracted Fang Ze's attention. And if Conan didn't come, Fang Ze alone wouldn't have been able to think of all this and find out, but he just met Conan who was surrounded by dead people every day and solved cases every day.

Lu Chen sat down on the ground, stretched out his hands tremblingly, and said to the policemen present, "I admit that I am guilty, it was I who killed Wei Qingya, can I turn myself in like this, can I fight for a lenient sentence." ”

Seeing Lu Chen like this, several people around the serious crime team immediately took out handcuffs, restrained Lu Chen, and picked him up.

"Whether you can be lightened or not depends on the court, not us. The team glanced at the top medical student, turned their heads, and looked at Conan with interest.

"Child, can you tell me about this guy's motive for committing the crime, if this guy just broke up with his wife and wanted to divorce, but he couldn't afford to spend four years designing a murder case, after all, it's not what it used to be, divorce is a normal thing, and both of them are still young. ”

The words of the Serious Crime Team fell, and everyone else in the guardhouse looked at Conan to hear what this amazing schoolboy had to say.

But Lu Chen raised his head, hoping that Conan would not continue, "Please don't say it, leave me something that I can explain, I still want to be light." ”

Conan ignored him, but continued, "Before, Fang Ze and I always thought that Lu Chen had a lover outside, so after his wife died, he would immediately tear up the wedding photos of the two and give away the house, and we also regarded this as an important evidence when we reported the case for the first time." ”

Fang Ze paused, everyone was listening fascinated, and wanted him to continue, but Conan suddenly said, "I'm a little thirsty, do you have any water?"

"Yes, yes, yes. A civil aviation policeman hurriedly came over and gave Conan a bottle of mineral water, and thoughtfully unscrewed the bottle before handing it to Conan.

Conan took a few sips of the water bottle and continued, "But we soon found out that this theory is untenable, because if it is just a lover, then why haven't the husband and wife had even one more conflict in the past four years, and Wei Qingya, in the marriage crisis with Lu Chen four years ago, only mentioned that Lu Chen wanted to divorce when talking to her mother, but she didn't mention that Lu Chen had a mistress outside. ”

Conan looked at Lu Chen, who had been handcuffed, and continued, "Besides, if Lu Chen really has a lover, then when he goes abroad today, he will definitely take his lover with him, not by himself." ”

"So why did he kill Wei Qingya?" asked a civil aviation policeman impatiently.