Chapter 968: Color-Changing Flower Tea

Chapter 968: Color-Changing Flower Tea

Inspector Megure was very surprised but accustomed to it: "Brother Kamiya, do you already know who the murderer is?"

Conan slapped his forehead in regret. Damn it, from the location of the poison, he had already guessed who the murderer was, but he had no idea how the victim drank the poison.

I didn’t expect that Youya had already solved the case?

Toru Amuro looked serious, but a smile flashed in his eyes - he was indeed a detective he valued, and his ability to solve cases was second to none even among the public security departments.

"Brother Kamiya, please tell me your reasoning."

Youye nodded, and under everyone's gaze, he said: "The reason why we didn't find the container or bag of poison is because the murderer smeared the poison on the edge of the cup in advance, and the container can also be safely discarded.

However, if the poison was applied to the edge of the cup, one could easily mistake the cup and get poisoned. Therefore, she never left the room from beginning to end, staring at the cup coated with poison and looking for someone to switch it..."

"There is no one else except you, Ms. Kousaka Juri."

Kousaka Juri's expression changed instantly, and she looked at Yuya with a little horror.

Beppu Kagetsu couldn't help but interrupt: "Wait, wait a minute, you said the poison was applied to the cup from the beginning? But Juri was drinking tea from that cup from beginning to end!"

Youye raised his finger and shook it, saying, "Don't forget, the only part where the poison is detected is the edge that your mouth touches when you hold the cup with your left hand. As long as you don't hold the cup with your left hand when drinking tea, you can completely avoid drinking poison."

Beppu Kagetsu was speechless.

Takagi Wataru couldn't help but ask: "When did the poison come from..." The container of the poison couldn't be found anywhere.

Yuya said, "She must have been carrying it with her before she was hospitalized."

"On the day you have agreed to come visit me, I will put poison on the cup in advance, and then I will find a chance to throw away the container."

Beppu Yuehua seemed to not believe such a thing, and still tried to help explain: "Did you forget something? Juri drank blue flower tea at that time, and Lingnai drank red flower tea. If the cups were changed, it would definitely be discovered!"

Happo Tokieda echoed, "That's right, even if there's a slice of lemon floating on the tea, it won't be wrong!"

Yuya smiled slightly: "Yes, but that slice of lemon is the key to this technique!"

Inspector Megure and the others all showed puzzled expressions: "What's the key?"

Youya nodded and said, "Seeing is believing, let's do an experiment directly."

"Inspector Megure, can I have one of the packets of butterfly pea flower tea for a demonstration?"

Inspector Megure was stunned for a moment, then nodded: "No problem."

After getting permission, Youya took out a bag of butterfly pea tea bags and put it into a new cup, then poured hot water into it, and soon the water turned blue.

Yuya took another slice of lemon: "Now is the time to witness a miracle."

As soon as he finished speaking, the lemon slices were put into the scented tea.

Yuya placed the cup on the table so that others could see it.

Soon, a magical scene appeared before everyone's eyes.

The originally blue scented tea began to darken rapidly after the lemon slices were added, and soon turned completely red.

"What, what is this?! The blue scented tea turned red?" Inspector Megure was amazed, "Brother Kamiya, what's going on?"

Yuya patiently explained: "This is actually a chemical reaction. A certain ingredient in the scented tea reacts with the acid, and the external manifestation is the change in color, which is to turn red."

"In addition to butterfly pea flower tea, other flower teas will also change color when reacting with acid."

Yuya walked to the cupboard, took out a bag of baking soda, and turned back to the table: "Similarly, since it can react with acid, then after adding alkaline baking soda..."

As baking soda was poured into the teacup, the scented tea, which had turned red, quickly returned to its original blue color.

Youya put the things away and continued, "In other words, this is how the murderer committed the crime."

On the day of the agreed visit, Juri Kousaka called the victim over in advance, and while she went to get water, she smeared poison on the edge of the teacup.

After everyone arrived, she suggested tasting different flavors of scented tea and waited for the victim to choose Roselle tea.

Juri Kousaka was in charge of making tea. She could easily replace the roselle tea bag with a butterfly pea tea bag, and then add lemon slices to it, turning the blue tea into red tea.

Then, she used the same method to turn her butterfly pea flower tea red.

Then, he used his own teacup to push the victim's tea cake over, and then pretended to pick up the victim's teacup as if it were his own teacup. He then took out the lemon slices inside and added baking soda. In this way, the red scented tea returned to its original blue color.

Afterwards, he used the same method to push the handle of the teacup to the victim's left hand side.

In this way, the teacups were exchanged without anyone noticing.

At that time, the other three people were focusing on the photo and no one noticed this scene.

As we all know, when a person answers the phone, no matter what you hand him, he will subconsciously take it.

Kousaka Juri took advantage of this psychology and made the victim unconsciously pick up the teacup with her left hand. In this way, her mouth would touch the poisonous edge and she would drink the poison along with the scented tea.

After Yuya finished saying all this, he looked at Juri Kosaka and asked, "Well, Ms. Kosaka, is there anything wrong with my reasoning?"

Kousaka Juri's face turned sickly pale. She looked at Yuya with fear in her eyes, her body trembling slightly and she couldn't speak.

This performance is just short of having "I am a murderer" written on his face.

Happo Tokieda raised a question: "You speak as if you saw it with your own eyes. Do you have any evidence?"

"Of course I have evidence," Yuya said with a smile on his face, "If I wasn't absolutely sure, I wouldn't be standing here."

Happo Tokieda: “…”

Yuya pointed at Juri Kosaka's left hand and said, "Ms. Kosaka, there seems to be something on your thumb?"

Kousaka Juri was startled and subconsciously clenched her hands.

"In addition to the container of poison, the murderer also wanted to clean up another thing, which was the lipstick left on the teacup when the deceased was drinking tea."

"As a hospitalized patient, Ms. Kosaka would be suspicious if there was lipstick on her teacup, but she couldn't clean it off in a big way, so she could only use her fingers. But lipstick is something that cannot be cleaned off with fingers alone."

After hearing this, Inspector Megure immediately stepped forward and grabbed Kousaka Juri's hand, and sure enough, there was a red mark on her thumb.

"I see. If the composition of the victim's lipstick matches that of this stain, it can be used as evidence."

Yuya added, "Also, if you investigate the two cups of tea, you'll know that they're both butterfly pea flower tea, and baking soda should be detectable in Ms. Kosaka's cup."

“These can all be used as evidence.”