My Inseparable House Guests

"I'll tell you how you killed someone." Conan said to Lu Chen, "According to the existing evidence, we can deduce the process as follows, "Last Monday, that is, the morning of Wei Qingya's death, you got up early in the morning, A small amount of sleeping pills may have been put into Wei Qingya's water, causing Wei Qingya to sleep all the time. After doing all this, you went to your classmate's birthday party, and returned home at noon when no one was paying attention, and Wei Qingya hadn't woken up yet. "

"You energized a silver needle and inserted it into Wei Qingya's chest. When it was estimated that she was hopeless, you pulled out the silver needle. After the needle was pulled out, no traces could be seen on the body surface, and then you returned party, and take away the silver needle and dispose of it when you leave. Wait until evening before going home."

Conan touched Lu Chen with his finger and said, "And after you got off work, Wei Qingya wasn't even dead, so you sent her to the hospital for emergency treatment, because Wei Qingya has always had a bad heart, and the needle hole of a silver needle made the naked eye hurt. You can't see it, so Wei Qingya was diagnosed with myocardial infarction as a matter of course. Logically speaking, your plan should be perfect to the point of perfection, but you think that no one can see it, so you dare to agree with Wei Qingya's last wish in front of him, and the corpse It was handed over to the school to make a specimen, but you never expected that Brother Fang Ze saw black blood accumulation in Wei Qingya's pericardial cavity first, and then that small pinhole was soaked in formalin. It was then magnified, allowing us to grasp the most critical evidence."

"It's really hard to make up stories for you, a child." After listening to Conan's words, Lu Chen's face was still very calm, just like he used to practice killing mice in the laboratory.

"According to what you're saying, 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 mixed anti-arrhythmic drugs in the water or food that Teacher Qingya usually drinks, which caused Teacher Qingya's heart to suddenly feel uncomfortable. Yes, and then you wantonly spread things about Teacher Qingya’s bad heart in the school, so that everyone will have a preconceived impression and prepare for your murder four years later.”

"Yes." Conan continued, "As a medical student who studied hard in college, your grasp of the dosage is absolutely precise. The anti-arrhythmia drug you gave Wei Qingya just made Wei Qingya's heart uneasy. Comfortable, but not fatal, so after four years of laying the groundwork, your murder will not attract suspicion."

"It's ridiculous." Lu Chen said, "I bought anti-arrhythmic drugs for four years, including the previous sleeping pills. These drugs are all prescription drugs, and there will be records of purchases. Didn't the police check my purchase records before? I never bought the drug at all."

"No, you bought it." Conan continued, "There are anti-arrhythmic drugs and sleeping pills on the medicine shelf of the Pfizer clinic where you work. As the only doctor in the clinic, you took some without leaving any records. The medicine is really easy, but in fact, there is no need to check the records from four years ago. We only need to check the time when Wei Qingya went to see a doctor because of a heart discomfort, and check the clinic's accounts according to the time. It can be found that there are some anti-arrhythmic drugs that cannot be purchased at all, because their purchaser is you!"

Lu Chen's calm face began to appear flustered. Indeed, the surveillance video of the community, the pinhole in Wei Qingya's heart, and the medicines in the Pfizer clinic where the purchaser could not be found, any of these three pieces of evidence should be presented separately. It is not certain that he is the murderer, but the problem now is that these three evidences appear at the same time, and he has no chance of turning the tables!

Ruined.

Lu Chen originally thought that what he was doing was flawless, so he dared to hand over Wei Qingya's body to the school to make a rough specimen, but he didn't expect it to be so secretive.

It was only because of a simple black blood in the pericardial cavity that caught Fang Ze's attention.

And if Conan didn't come, Fang Ze alone would not be able to think of all this and find out, but he happened to meet Conan who was around every day and solved the case every day.

Lu Chen sat paralyzed on the ground, stretched out his hands tremblingly, and said to the policemen present, "I admit that I am guilty. I killed Wei Qingya. Does this count as surrender? Let it go."

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

"Whether you can be punished lightly or not depends on the court, not us." Team Fang glanced at the top medical student here, turned his head, and looked at Conan with interest.

"Little friend, can you tell me about this guy's motive for committing the crime? If this guy just broke up with his wife and wants to get a divorce, he can't afford to spend four years designing a murder case. After all, it's not like before. Divorce is a very normal thing, and both of them are young."

The voice of the serious crime team fell, and everyone else in the guard room also looked at Conan, wanting to hear how this magical elementary school student explained this matter.

But Lu Chen raised his head, hoping that Conan would stop talking, "Please stop talking, leave me something to explain, and I want to deal with it lightly."

Conan ignored him, but continued, "Before, Fang Ze and I always thought that Lu Chen had a lover outside, so after his wife died, we immediately tore up the wedding photo of the two of us, and the house was destroyed. Send it away, we also took this as important evidence when we first reported the crime."

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

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

Conan took a few sips from the water bottle and continued, "But we soon found out that this theory is untenable, because if there is only a lover, then why did the couple stay together for four years? There was not even a single conflict in the house. Moreover, during the marriage crisis with Lu Chen four years ago, Wei Qingya only mentioned that Lu Chen wanted to divorce when she talked with her mother, but she didn't mention that Lu Chen was outside at all. There is a little three thing."

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 bring a lover with him, not by himself. .”

"So why on earth did he want to kill Wei Qingya?" A civil aviation policeman asked impatiently.