I heard you are the strongest in the world?

We found nothing at Qidao’s house, as Ms. Mia said, among the pile of treasures, it’s hard to tell which one is the most precious.

It's just that we think everything is very precious, while the Urushishima family thinks that everything is not precious enough, so they don't care so much.

After contacting us, we found that those who were in favor of finding detectives to investigate were just thinking, "This person can blatantly come in today to steal things, and tomorrow he can use the same method to come in and kill people, so my safety is not guaranteed!" idea.

After all, no one really cared what the letter said.

Sure enough, we still have to start from the prisoner.Mori Kogoro took us back to the Urushishima Building.

No employees have officially settled in the building yet. Although the surveillance cameras are all installed, only the ones in the lobby and elevators are turned on.

The sender's method was simple and rude, and he directly placed the letter on the table, which means that this person must have come to the office in person.

I originally thought that after investigating the elevator monitoring, the scope could be narrowed down, but who would have thought that because the building was not in operation at the time, not only the security measures were not comprehensive enough, but maintenance inspection and decoration workers, as well as express delivery, would come and go in and out of the elevator from time to time.

During that time, Qidao Mia went to the office around [-]:[-] am every day to check the progress of the renovation, and to pay or sign for the goods, and left until [-]:[-] pm.

The key to the office is in her own hands. The office will only open when she comes, and she will remember to lock the door when she leaves.

That is to say, the only way to put the threatening letter in is to take advantage of the time she is in the building.

I didn't expect it to be restricted like this. There were not too few people who had been to the top floor during this time period of the day, and there were seven or eight here and there.

Edogawa Conan frowned, "There must be something we haven't discovered."

"Ah, come on!" Conan's voice suddenly rose two scales, "This is Osaka! Why don't we bring Brother Hattori here!"

I couldn't help but swear, Conan used this trick every time he acted like a baby, didn't he think the voice was abrupt?

Mori Kogoro put his hands on his waist, and snorted disdainfully, "It's not that I can't find the prisoner, why did I ask that Osaka boy?"

"Hey..." Conan dragged his voice and looked regretful, "But Brother Hattori has always said that he admires Uncle Kogoro very much! I want Brother Hattori to come and study together!"

"Hahaha! That Osaka boy admired me so much behind his back," Mori Kogoro laughed happily, grinning almost to the ears, and waved his hand, "Since that's the case, there's nothing you can do about it, call him come on!"

"Today I will show you what a famous detective is! Bahahahahahaha!" Mouri Kogoro walked out with his head held high, and Miss Miwako immediately followed.

Well, from the perspective of a bystander, it was completely played by elementary school students between applause, Uncle Maori!

Edogawa Conan ran outside to make a phone call, and Mao Lilan and I looked at each other speechlessly, "Uh...are we waiting here, or?"

Mao Lilan sighed, "Really! Dad is like this every time! Let's stay and continue to study and monitor, maybe we can find something we just missed."

I nodded, "Alright."

We simply dug out all the monitoring of this month, trying to see if we could find any clues, but we didn't expect that we really discovered the problem.

The little brother who had been delivering the courier was replaced by another person three days before the incident, and changed back to the previous little brother on the second day after the incident.

Although they wore the same uniform and had almost the same hairstyle, and the man didn't even raise his head for three days, and the surveillance didn't capture his face at all, there was a fatal difference between them.

The original brother was left-handed, and he kept using his left hand when entering the elevator to press floors, while the person who replaced him was right-handed.

We hurriedly informed Kogoro Mori of this discovery, and Kogoro Mori immediately took us to the courier company to investigate this clue.

When he arrived at the courier company, Hattori Heiji, who received a call from Conan, also arrived.

Seeing him, Kogoro Mouri stretched his coat and coughed lightly, "Since you admire me so much, I will give you a chance to learn. Now we are here to arrest the prisoner who sent the threat letter. Leave it to you, just let me see your ability!"

"Ah?" Hattori Heiji was stunned for a moment, then he thought of something and gave Edogawa Conan a sneaky look, twitching the corner of his mouth before replying, "I know!"

Mori Kogoro nodded in satisfaction, turned his head and patted Iwako's chest, "Don't worry, Ms. Miwako, this matter will definitely be resolved satisfactorily with me here! There's no need to watch this kind of boring investigation from the sidelines, why don't we go to the opposite side Sit in that Obac for a while, and I can tell you about the case I encountered before!"

No wonder he would agree to let Hattori come over, he did it for a long time to make it easier for him to pick up girls...

"Father!" Mao Lilan stomped her foot unhappily, "You should stop in moderation!"

"Go, go, go," Mori Kogoro waved his hand, "Kids don't meddle in the affairs of adults."

He turned to Miwako Imoto, with a smile on his face again, "Let's go, Miss Miwako!"

Hattori Heiji and Edogawa Conan turned into dead fish eyes at the same time. Hattori Heiji held back and said nothing, but Edogawa Conan couldn't help complaining, "Since you say that children should not get involved, then don't take such an important Leave it to the children..."

I patted Mao Lilan on the shoulder comfortingly, and she took out her mobile phone with an unhappy face, "I want to tell my mother about this!"

Otherwise, forget it, I looked at Xiaolan hesitantly, looking at Uncle Maori, it’s not been a day or two since I did this kind of thing, since I haven’t corrected it until now, telling your mother will only Let her get in the way...

However, this is someone else's housework. I don't know the situation of Xiaolan's family. Maybe this is the way they get along with each other. Thinking of this, I shut my mouth.

"Ah! Really, why is even mom like this!" Xiaolan put away her phone angrily, "Let's go! Let's investigate the clues!"

Conan Edogawa approached cautiously and asked, "What's the matter, sister Xiaolan?"

Mao Lilan took a few deep breaths, "It's nothing, Conan, don't worry about me, let's investigate the criminal together!"

It seems that Xiaolan was really angry this time, and I didn't want to bring up this matter again to make Xiaolan feel uncomfortable, so I tried my best to talk about the speculation about the case, trying to divert her attention.

Conan and Hattori obviously understood my motives and started discussing them together.

Hattori Heiji was very experienced in this kind of thing, so he went directly to the manager's office, explained the case and our identities, and asked the manager to bring the two people on the monitor over.

Unexpectedly, after a while, only one person came, that is, the courier brother who has been in charge of delivering the goods.

He obviously didn't know what happened. He just thought that the manager had something to ask him. He came in and saw so many strangers in the office. He was stunned for a moment, and he started to report, "Manager, Ye Yusang has resigned before."

"What?" The manager was taken aback immediately, and explained to us nervously, "This, this is something we can't help, I didn't know he had already resigned!"

"Don't worry, we won't misunderstand." Hattori Heiji nodded as expected.

"Then can we check the information registered by Shimono Yu-san when he joined the job?" Mao Lilan asked politely.

"Of course!" The manager was afraid that we would regard him as a gang of criminals, and hastily dug out a thick stack of documents from the cabinet. "It's all here, take a look!"

The courier brother who was called was completely confused, "Manager, are you...?"

Edogawa Conan walked up to him, "Hey, big brother, that Nou-san took the opportunity to deliver something to Qidao Building and pretended that you sent someone a threatening letter!"

"Eh?!" The courier boy was stunned, "Pretending to be me to deliver a threatening letter?!"

"That's right!" Edogawa Conan nodded, "We almost thought that big brother was the criminal! Fortunately, we found something different! Big brother, why did you ask Noyu-san to help deliver the goods those few days? ?”

"It's not about asking him to help deliver the goods." The courier boy touched his head in fear, "It was during that time that I didn't know why I was so sleepy. After coming to the company during the day, I fell asleep. When I woke up, Ye Yusang Just tell me, he couldn’t wake me up, so he had to send me to the place I was in charge of first, and I even invited him to eat several meals for this!”

The few of us looked at each other, and we understood in our hearts that he would fall asleep after arriving at the company and couldn't wake him up anyway. It is likely that Ye Yusang took drugs to replace him in the Qidao Building.

Conan asked a few more questions. The courier boy didn't know Ye Yusang very well, so he didn't know any more things.

In fact, no one in the company is familiar with Ye Yusang, and everyone is very busy, colleagues may only see each other once in a few days, Ye Yusang resigned almost a week before he was noticed.

Seeing that he couldn't find anything, Hattori told the uneasy courier to go back first.

Hattori Heiji tried to call the phone number filled in the entry form, but the mobile phone reminded that it was an empty number.

He took a photo of the entire form, "Let's go, although the address may be fake, but let's go and have a look first, maybe we can find some clues!"

Me: "At least the one-inch photo on the form is real, and we have an important clue."

The address filled in the entry form is a chaotic area with a little distance, the apartment building is full of fish and dragons, graffiti and sewage everywhere.

We looked for it according to the house number, and Hattori Heiji knocked on the door, "Hello, is there anyone? We are a student association here to do social surveys!"

A tall and thin man opened the door, "Huh? Are you out of your mind to come to this kind of place to investigate?"

This person's appearance is obviously completely different from the one in the photo. I was a little disappointed, but I didn't show it on my face. After all, I had expected this for a long time. It would be more surprising if that Nou-san really lived here.

"Hello, the person who was surveyed last recommended us to come to you," Hattori Heiji clicked on the one-inch photo on his phone, "Please confirm whether you know him, and we will return him five thousand after confirmation." Yen’s effective referral reward.”