Just as the two said hello and were about to leave, Conan suddenly stopped them.

"Hey, uncle, your buttons are about to fall off!"

The tall and thin man looked a little flustered when he heard Conan's reminder, "Oh, no, it's okay. ”

As he spoke, he reached out and wiped the buttons.

This scene also attracted Conan's attention, and Yuki Shirakawa's eyes on the side also flickered slightly.

At this moment, several people ran by.

The leader asked, "Where was the body found?" ”

The person in the back hurriedly replied: "In the train of the Flower Street Line that arrived five minutes ago, the dead person seems to be a doctor." ”

As soon as Sato and the two on the side heard that it was the doctor who died, they guessed whether it would be someone from their medical team, and were ready to follow and take a look.

And as soon as Maori Kogoro heard that there was a corpse, he also got up and prepared to go over to take a look, after all, he was the "detective" Maori Kogoro!

When they arrived at the scene, they saw that the corpse's fingers had been broken, its wallet had fallen to the ground, and its whole body was leaning against the window.

Seeing this scene, Sato was the first to exclaim, "Ah, it's the Utsumi!" ”

The tall thin man on the side showed a fierce look, but quickly took it back, but this scene was seen by Conan and Yuki Shirakawa on the side.

Yuki Shirakawa doesn't remember this case, but he can basically be sure that the murderer is the tall and thin man, after all, whoever shows this kind of gaze first in the case of Conan is most likely the murderer.

She's not ready to meddle in the case, so let's leave it to the sleeping Kogoro.

Maori Kogoro on the side saw that Sato knew the deceased, and hurriedly asked, "So it's the same medical union!" ”

Sato affirmed his words, and according to him, the deceased was a doctor named Utsumi, and they were still together last night.

……

"Ah, I've heard of Detective Mori Kogoro for a long time, it's nice to meet you, my name is Yosuke Kobayashi, and I'm the director of the Railway Police!"

The man who had just taken the lead here was also very happy when he heard the name of Mori Kogoro, and hurriedly introduced himself.

When Maori Kogoro heard this, he showed his signature laugh again, "It's nothing, please give me a lot of advice, hahahahaha......"

Back at the scene, Mori Kogoro asked, "Have you found out what the cause of death is?" ”

Yosuke Kobayashi replied: "It's not sure yet, and the preliminary judgment is heart failure." ”

Mori Kogoro put his hands in his pockets, "Oh, that's not my specialty." ”

At this time, Conan found a blind spot, "Hey, isn't that a trace of injection?" ”

Hearing Conan talking nonsense at the scene of the crime again, although Kogoro Mori was very angry, he still followed Conan's reminder and looked over.

Sure enough, traces of injection were found in the veins of the deceased.

Seeing that Yosuke Kobayashi had confirmed that there was indeed a pinhole up close, Conan continued, "As long as potassium chloride is injected with a high concentration of intravenous potassium, it will produce the same symptoms as heart failure and die. ”

Seeing that everyone became surprised with Conan's explanation, Yuki Shirakawa couldn't help but hold his forehead with his hand, this Conan is really hovering on the verge of death forever.

She didn't want Conan to be exposed so soon, so she explained: "In the human body, there is an electric potential difference between the inside and outside of the cell membrane, and this potential difference has a very important relationship with potassium ions.

In the human body, especially nerve cells, there is a positive and negative electric difference between the inside and outside of the potassium and sodium ion membranes, giving electrical signals to control other organs to respond accordingly.

If the concentration of potassium ions in the body is too high, nerve cells will send signals to drive muscles to relax, and the heart will slow down or stop beating, which is heart failure.

Generally speaking,. In medicine, it is absolutely forbidden to push potassium chloride intravenously, and it can only be slowly drip or pumped. ”

Sure enough, after hearing Yuki Shirakawa's explanation, everyone was attracted to the attention and stopped paying attention to Conan's problem.

And Dr. Sato, who was on the side, heard Yuki Shirakawa's explanation and showed a surprised look, "Is this young lady a medical student, you know it very well!" ”

Yuki Shirakawa shook his head, "It's just that I've taught myself some medical knowledge." ”

Conan saw that everyone's attention was on Yuki Shirakawa, and he was also secretly relieved, just now he only paid attention to the case, forgetting that this should not be the knowledge that a child still knows.

Because Yuki Shirakawa had shown his medical knowledge at Sayuri's wedding in Matsumoto before, he didn't arouse the suspicions of Xiaolan and the others.

However, because the most critical syringe could not be found at the scene, the case still did not progress.

Conan suggested that it was a homicide case, but was given a hard education by Kogoro Mori and then driven outside.

Mori Kogoro said: "If you want me to see, this is just a case of robber murder, you can see that his wallet has been emptied. ”

Yosuke Kobayashi was a little strange and looked at the deceased's fingers, "But is it necessary to break all his fingers?" ”

Maori Kogoro explained: "What is this, it must be that the murderer is too burly, and he directly suppressed the deceased by force, so that he has no way to resist." ”

Conan rolled his eyes as he listened outside the window, then stepped aside and looked at the route map of the train and thought.

By chance, he also overheard a conversation between a police officer and a shopkeeper, and learned that the deceased had bought a drink at around 10:50.

However, since she could not find a thousand-dollar bill, she gave the deceased a lot of coins.

At the same time, Conan also learns that a man wearing a dark blue coat, sunglasses, and a beard appeared next to the deceased shortly after.

Because of the previous questioning by the police, Conan also knew which thin and tall man was a doctor surnamed Date.

At this moment, he suddenly noticed that the coat of this Doctor Date was two-sided, and the inside was dark blue.

Thinking of the action of wiping the buttons before, and the buttons that he was about to fall off, he was almost sure that the prisoner was this Doctor Date.

But he doesn't know how the killer used, how did he kill someone on another train?

Returning to Mori Kogoro, "Uncle, do you really think this is a robber murder?" ”

Xiaolan was a little strange when she heard his question, "What's wrong, Conan?" ”

Conan explained, "Didn't you notice that the witness apparently looked richer? Why didn't the killer rob her, but chose the victim who didn't look very rich? ”

Ran and Mori Kogoro looked at the witness, and indeed as Conan said, he looked like a rich man.

Immediately after, Conan looked at Dr. Sato again, "Why does Dr. Sato keep wiping his sweat?" ”

Maori Kogoro looked at it, and if this was the case, he felt that Sato might know something, so he walked over.

Conan followed behind and pulled the corner of Yuki Shirakawa's clothes, "Sister Harina, do you have any thoughts on this case?" ”

Yuki Shirakawa shook his head, "No, I don't know the identity of the murderer for the time being." ”

"Okay." Conan nodded in disappointment, and then followed up with Mori Kogoro.

Yuki Shirakawa looked at the somewhat disappointed cubs, chuckled, shook his head, and then followed with his two cubs.