"Let me see who sent me the letter..." Maori Kogoro was confused. He took the envelope from Xiaolan and opened it to check the contents.

In the envelope, there was a piece of stationery, but there was no written content on it. Instead, it cut and pasted the text of the newspaper, leaving a message that seemed to be entrusted.

[on the night of the next full moon, the shadow of the moon shadow island will begin to disappear again. Please investigate the reason - Keiji ASO.]

Maori xiaowulang looked through the letter paper back and forth, and Leng hum said, "cut, who will release the entrustment in this way? It's definitely a prank of some boring guy."

After seeing the words "moon shadow island", Bai yanzhenyu immediately recalled the classic murder case in the original book "Moonlight". When he was about to speak, the telephone of the office rang.

Maori Kogoro threw away the letter paper, picked up the phone and replied, "moximoxi, this is Maori detective office."

"Detective Maori, I'm Guiji ASO from Yueying island. There are two days before the full moon. 500000 yuan as the remuneration for this entrustment has been remitted to the account of your firm. Please be sure to come."

Over the phone, there came the voice of a man who claimed to be Guiji ASO. Then he hung up without giving Maori Kogoro time to answer.

"Hey, wait a minute, listen to me, hey, hey... Damn."

Hearing the blind sound from the phone, Mao xiaowulang angrily hung up the phone and complained, "what a rude guy. Do you want to force me to accept the entrustment?"

"Uncle, the other party did remit the money into the public account of the firm. Do you want to accept the other party's entrustment?" Bai yanzhenyu checked the account of the firm with his notebook and asked Mao lixiaowulang's idea.

"Hmm..." Maori xiaowulang touched his chin and thought for a while. He replied, "I'd better go and have a look. After all, the reward is 500000, which is a good business."

"OK, then I'll help you order tickets to Yueying Island online."

Baiyan Zhenyu inquired Xiaolan and asked them while searching for the passenger liner to Yueying island two days later: "I heard that the scenery on Yueying island is very beautiful. I'm also going to play. Xiaolan and Conan, are you going together? It's just two days before the weekend."

Conan's detective curiosity had been provoked by the mysterious client in a strange way, and replied without hesitation: "I'm going."

"I'm going too. I haven't been to the beach for a long time." although Xiaolan is not interested in the case, she also decides to go to Yueying island.

"OK, then four tickets are booked." Bai Yan Zhenyu booked four tickets for the passenger ship and confirmed the matter.

……

Two days later, on Saturday, Baiyan Zhenyu and others got up early and took a passenger ship to Yueying island.

Maori Kogoro was going to watch the scenery on the deck, but he found that there was a strong fog on the sea. When he was bored, he complained angrily: "really, he can go to the park to enjoy the flowers, but he wants to go to a small island that has never heard of its name..."

Xiao Lan was quite excited and said with a smile: "because Dad, you received the reward from the other party, and it's not very good. You can relax on the moon shadow Island, can't you, Conan."

After hearing Xiao Lan's question, Ke henpecked Nan hurriedly replied, "uh huh, sister Xiao Lan is right."

"Uncle, there are chess and card rooms and bars in the passenger ship. If you feel bored, you can go there to play." Bai yanzhenyu provided Maori Kogoro with a place to relieve his boredom, while he took out his newly purchased novel and read it himself.

A few hours later, the ferry arrived at the moon island. Maori Xiao Wu Lang took the crowd to the registered residence administration of the island to find Mr. Asou Keiji who had not left any contact.

"Guiji Aso, right? Just a moment, let me find..."

After learning the intention of the people, the staff agreed to help, but after looking for it in the island residents' book for a while, they looked up and asked, "sorry, I didn't find the name. Are you sure the name is correct?"

"There's nothing wrong. I still have a letter from him," Mao xiaowulang asked after showing the letter to the staff. "Please help find it again."

After looking through the list again, the staff replied apologetically, "I'm sorry, there's really no such name on the resident register."

"Zhiye, what happened?"

Probably seeing many strangers gathered here, the director of registered residence management department came over and asked about the situation here.

The staff member named Zuo Zhiye scratched his head and replied, "director, this gentleman said he came here at the entrustment of Guiji Aso, a resident of the island, but I didn't find Guiji ASO in the resident register."

After hearing the name of ASO Guiji, the director's face suddenly changed. He confirmed to Maori Kogoro in surprise: "who did you say entrusted you?! ASO Guiji?!"

The director's voice was very loud. Other residents who came to the registered residence management office heard the name of Asou Keiji. He became very eccentric and whispered.

"Yes, this is the letter of entrustment he sent me." looking at the abnormal situation of the director and other residents, Maori xiaowulang also realized that something was wrong and quickly handed the letter of entrustment to the other party for viewing.

After reading the contents of the entrustment letter, the director seemed to see a ghost and said in disbelief: "it is absolutely impossible to have such a thing, because... Because of Keiji Aso, he died more than ten years ago!"

"What? Guiji Aso is dead?" Mao xiaowulang was stunned. His face became serious and asked the director who knew the situation of Guiji ASO: "can you tell me about Guiji ASO?"

"Well... Well, you come with me, let's go to the office." the director hesitated for a while, and finally agreed.

"Guiji Aso, an Aboriginal born on this island, used to be a famous pianist, but he died on a full moon night twelve years ago."

"At that time, Guiji Aso, who had been away from home for many years, returned to the island and held a personal piano concert in the citizen's Hall of the village."

"But after the concert, Keiji ASO was suddenly closed at home with his family and set a fire."

"It is said that he killed his wife and daughter with a knife. He seemed to be entangled in the raging fire. He continued to play the piano, which is Beethoven's piano sonata moonlight."

"So everyone thought he was entangled with something unclean, and he didn't want to talk about ASO Guiji with others..."

Under the director's narration, people learned about Guiji ASO. As detectives, Maori Kogoro and Conan also confirmed that there was absolutely something unknown behind the entrustment.