As soon as he left the next day, Mori Kogoro arrived at the village police station at the agreed time and met with Officer Twilight and others.

"Good morning, Officer Twilight!" Conan, who was acting as a Maori Kogoro and a fart, greeted warmly, "Why don't you seem to have any energy?" Did you not sleep well last night? ”

"I didn't sleep well last night." Officer Twilight rubbed his unopened eyes and yawned lazily.

"Last night we were investigating the relevant files in the police station, and we made an unexpected discovery! Brother Maori, you're here, hurry up and help us take a look! ”

With that, Officer Twilight asks his men to bring a stack of old papers and place it in Mori Kogoro's hand. Conan, who was on the side, also hurriedly leaned up with his head up.

"Is this sheet music?" Mori Kogoro was a little confused.

"Actually, this is the only relic of Keiji Aso." "Twelve years ago, after Keiji Aso committed suicide, his house was burned to the ground, and only this stack of music kept in the safe remained. ”

"Why did Aso Quill protect this stack of scores? We suspect there may be something wrong with this. So Maori brother, hurry up and use your detective mind to help us solve this puzzle! ”

"This ......" Maori Kogoro was a little embarrassed, "Actually, Officer Twilight, I really don't know anything about music, why don't you let Xiaolan help you take a look?" ”

Mori Kogoro handed the sheet music in his hand to his daughter behind him. Xiaolan took over the score, although she didn't have a good level of learning piano, but it was enough to read a score. But the more she read the score, the more strange it felt.

"What's wrong, Xiaolan?" Officer Twilight asked, "Is there really a secret in this score?" ”

"It's not ...... But isn't this a strange score? Xiaolan's tone was a little suspicious, "This should be Mr. Keiji Aso's own score, but when I read it briefly, I feel that every sheet of music is written very strangely, and if I really want to play it, I guess it won't sound good." ”

"Isn't Mr. Aso a famous pianist? Why did he create a score of this caliber and keep it? ”

After listening to Xiaolan's confusion, everyone present also fell into contemplation.

Conan couldn't suppress his curiosity, so he took one of the scores from Xiaolan's hand and read it carefully.

"Could this be some code?" Kogoro Mori thought with his chin in his head, "I got that invitation and it was like a guessing game, maybe this score is like this!" ”

"But if it's a code, how do we interpret it?"

Unable to answer Officer Twilight's question, Kogoro Mori could only continue to bow his head and pretend to be thoughtful.

At this moment, Conan on the side had already found a way to interpret the code. He interpreted the sheet music in his hand according to the way he had deduced it.

Conan was given a page in the middle of the score, and the text was clearly incoherent before and after, but the amount of information was not at all.

The business of drug trafficking...... Keiji Aso participated in drug trafficking before his death! But who are the accomplices mentioned in the score? Conan was also stunned by the information he had deciphered for a moment, and he couldn't wait to take all the scores and read them carefully. But obviously, these busy adults are not going to listen to his little child so simply.

It seems that it is time for the "sleeping Kogoro" to appear. Conan tiptoed and quietly circled into the corner. He turned on the scope on his watch and aimed it at Kogoro Maori's neck with an anesthetic needle.

Maori Kogoro, who was still racking his brains to decipher the code one second, lost consciousness with a cold back of his neck the next second. His heavy body slammed against the wall and fell into a sweet sleep.

"Hey, what's wrong with this guy?!" Ginzo Nakamori, who saw this scene for the first time, was obviously a little uncalm, and he hurriedly rushed forward, trying to help Mori Kogoro up.

"How did he lose consciousness? Hurry up and get a couple of people to take him to the clinic! ”

"Don't be nervous, Officer Nakamori. The Maori brother was just asleep. Officer Twilight, accustomed to this kind of scene, patted Ginzo Nakamori on the shoulder and motioned for him to leave it alone.

"Every time the Maori brother finds out the truth, he suddenly falls asleep like this, and then expounds his precise and correct reasoning! This is the origin of Detective 'Sleeping Kogoro'! ”

"Say, Maori brother! You've unlocked the code, haven't you? ”

"You're right, Officer Twilight." Conan hid in the shadows and said in a voice that changed to that of Mori Kogoro, "I already understand how to interpret this code." ”

"It's actually quite simple. These strange notes on the sheet music actually represent the English alphabet. I think Keiji Aso should start from the far left of the piano keyboard and put the 26 English letters in turn. Then replace the message you want to convey with the corresponding notes in the form of romanization, and finally write it into a musical score to keep it. ”

"And we only need to reverse the deduction, convert the notes back into the English alphabet, and then spell them, and then we can know the content of the code."

"Xiaolan, you use this method to interpret it, and then read the interpreted content to everyone!"

"Okay!" Xiaolan hurriedly arranged the score in order and interpreted it from the first line.

"The first line on the first page reads...... WRITE TO MY SON SEIJI? ”

"Son?" The police officers present all opened their mouths in shock, "Does Keiji Aso have a son?!" ”

At this time, the old police officer on the side also patted his head and shouted:

"Ah, I remembered, too! KEIJI ASO DOES HAVE A SON NAMED SEIJI! The child had a serious illness since he was a child, and has been recuperating in a hospital in Tokyo since then, rarely staying on the island. ”

"So, the night Keiji Aso died twelve years ago, his son was no longer on the island?" Officer Twilight said.

"If that's the case, then his son is probably still alive in the world!"

Conan was also shocked at first, but he soon calmed down and continued to think about it, and then he came to a startling conclusion.

Finally seeing through the truth, he continued to say in the voice of Maori Kogoro:

"I think Keiji Aso's son is not only alive, but he's on Moonshadow Island right now! LADIES AND GENTLEMEN, THERE IS A PERSON ON MOONSHADOW ISLAND WHOSE NAME CAN BE PRONOUNCED SEIJI! ”

"That's right, Dr. Narumi deliberately concealed the correct pronunciation of his name, he is the son of Keiji Aso!"

"Xiaolan, read on! Let's see what exactly Keiji Aso wants to tell his son! ”