"By the way, Hattori, do you have any ten-yuan coins on you?"

Shinichi's words confused Hattori: "Yes, yes, why do you want coins?"

Suddenly, Hattori thought of something. After all, he was also a high school detective with the same reputation, and he was definitely very smart. In an instant, he understood what Shinichi meant.

Hattori took out a coin and handed it to Shinichi.

Officer Megure asked: "Brother Kudo, I'm very happy to see you back, but there was no trace of any poison in the drink cups of the deceased and the other three people."

"Don't worry, Officer Megure. The murderer is taking advantage of the victim's trivial habit, and the murderer should have one piece of evidence in his hand now."

Shinichi was very confident that he had figured out the whole thing in his mind.

Officer Memu still hadn't figured it out. According to his opinion, no poison was detected in the cup, and the victim drank all the drink. It looked like he committed suicide by poisoning.

Shinichi shook his head: "Indeed, you may think so at first glance, but you only need to use one thing, and that is ice!"

"ice?"

"Potassium cyanate is insoluble in ice water. You only need to inject potassium cyanate into the center of the ice cube, then fill the hole, and put it into Mr. Urata's cup together with other ice cubes. This way, Mr. Urata can melt it before it melts.

Drink most of the drink."

But even so, there should still be some dissolved poison left in the cup, which is what Officer Memu is puzzled about.

"Mr. Urata's cup lid is open, right? Then do you know why it is open?"

Uncle Maori didn't think about it and said directly: "Maybe Mr. Urata was in unbearable pain after taking poison, so..."

Before he finished speaking, Officer Megure interrupted Uncle Maori directly: "That's nonsense. If that were true, the cup would have been smashed long ago!"

Shinichi continued to explain: "After drinking this kind of drink with ice cubes, there is only one reason for opening the lid, that is, Mr. Urata ate the ice cubes instead of drinking the poison. When he drank the potassium cyanate,

If you eat the ice cubes, of course you won’t be able to detect any residue.”

As he said that, Shinichi pointed to a corner of the crowd and curled his lips: "Just like Guangyou's actions now."

Everyone looked in the direction that Xinyi pointed, and saw Guangyou holding a glass of drink, raising his head and swallowing the ice cubes in the glass, making the sound of the ice cubes being crushed.

At this time, Guangyou had just finished drinking a glass of iced Feizhai Happy Juice, and he was in a good mood. A glass of iced drink on a hot day, the taste can be described in one sentence as "the heart is cool and the heart is soaring."

He was also used to eating the remaining ice cubes so as not to waste them. When he was biting the ice cubes, he felt that someone was looking at him, and not just one, but many.

He turned back to look at the crowd, pointed at Shinichi in the crowd, and said vaguely: "Look at me for what, look at him, just have a drink."

Black lines appeared on everyone's heads. At this time, Takagi came out to smooth things over: "That's right! Officer Megure, don't you always eat the leftover ice cubes?"

Officer Megure nodded: "Indeed, as long as Mr. Urata is known to have this habit, he can be easily killed with poison."

This habit is also common to many people. It is not unusual. Most people would never think that someone would use this to kill people. It is simple and covert.

Uncle Maoli was not very interested in how to kill people. He half-squinted his eyes and asked: "According to you, who is the person who added poison to the ice cubes?"

Mitani and Noda, who were only responsible for delivering the drinks, were naturally excluded and had no time to commit the crime. On the other hand, Ninagawa, who sold the drinks, was very suspicious. After all, she was the one who added the ice cubes. It was very normal for her to be suspicious.

However, Ninagawa deliberately replaced the iced coffee originally ordered by the deceased Urata with Coke without authorization. This means that the drink may be returned and replaced at any time. This is very normal, but this makes Ninagawa's suspicion much lower. This kind of

The murderer generally would not do an uncertain and stupid move. Moreover, there was another person who ordered iced coffee at the time, so it was easy to accidentally hurt him. The murderer was not a murderer. The murderer would not do this kind of move.

After everyone eliminated these people's suspicions according to Shinichi's elimination method, among the people present who had come into contact with and knew the deceased, only Honggami was left who bought drinks and brought the drinks to the audience.

Wu Yi is still a suspect.

After eliminating all the impossible things, what is left, no matter how unreasonable and impossible it is, must be the truth. No matter how much Shinichi thinks, he will never be able to think of another person who has the opportunity to poison.

As Noda and Mitani were friends of Mai Kogami, they naturally did not believe that their friend would kill someone. They subconsciously defended Mai Kogami and said: "According to what you said, Mai pretended to add creamer and syrup.

Then he secretly poisoned him, but didn’t he find unused creamer and syrup on Urata’s pocket?”

At this time, Guangyou had finished chewing the ice cubes, and the coolness in his mouth made him gasp. The feeling of comfort instantly relaxed his brain. He said beside everyone: "But, Mr. Urata's is not

Coke? Have you ever seen Coke with creamer and syrup? Mr. Urata probably won’t drink it after adding it, right?"

Adding creamer and syrup to Feizhai Happy Water is heresy and completely destroys the taste of Happy Water itself!

Shinichi nodded: "Yes, if you add it, Mr. Urata will most likely not drink it. Besides, Miss Kogami will only bring the drinks to you before the performance starts to prevent Mr. Urata from changing drinks.

Because the lights are turned off during the performance, it is still very troublesome to go out. Unless you really hate Coke, Mr. Urata probably won’t go to the trouble to change drinks.”

Officer Megure asked a question that he had yet to figure out: "How did she carry the poisonous ice cubes around with her?"

It's a sunny day today. Although the temperature is not too high, it can be said to be very hot in a crowded venue. It is precisely because of the heat that drinks are sold in the venue.

"I just went out to look around," Shinichi took out a wallet from his arms and said, "I found this wallet in the trash can in front of the bathroom. Just put the ice cubes in it and then put in a small piece.

Dry ice can keep ice cubes from melting for a long time."

Kogami Mai lowered her head and said with a smile: "As expected of Kudo Shinichi, but you have to know that Mr. Urata and I both ordered iced coffee. What's more, I gave all the drinks to Mitani.

Share it with everyone, how do I know he wants that drink?"

This was reasonable, but Shinichi did not agree. He said, "Because, both of your drinks were poisoned."

As soon as these words came out, everyone's hearts felt like waves. This news was so shocking that in order to kill someone, they even had to put themselves into the same dangerous situation.

But this is also suspicious. Hongshang Wuyi also finished the drink. Even if she drank the drink before it melted, the remaining ice cubes would either be detected or poured out, which would be even more suspicious.

Shinichi had a third option. He explained to everyone: "What if Ms. Kogami puts ice cubes in her mouth like Mr. Urata?"

Another big wave sent chills down everyone's spines. She would also die if she wasn't careful.

As he spoke, Shinichi took out the ten-yuan coin Hattori had just given him from his pocket, flicked his fingers, and the coin spun in the air and drew an arc, falling directly into Kogami Mai's hood.

Shinichi explained: "Although it is more dangerous, as long as you make sure the poison is in the middle of the ice and be careful, you will be fine."

Officer Megure asked: "Then how are you sure she is hiding in the hood?"

"Look, the top of the coin is still shiny, right?" At this time, Hattori had quietly come behind Kogami Mai, took out the coin from the hood and showed it to everyone, "This is the result of exposure to potassium cyanate.

The best demonstration of redox phenomena."
Chapter completed!