In the afternoon, it was close to four o'clock.

In the Jiamanbao Cleaning Company, in the office of Hidesei Nakayama, Numb Hisako held a rag in his hand, wiping Hidesei Nakayama's office.

Suddenly, the office door creaked open.

Numbi Hitoko hurriedly looked up, only to see Conan push the door and walk in, he couldn't help but be slightly stunned, and then greeted with a smile: "Hello little friend, you are Conan, right? What are you doing here?"

"Uh...... I'm a little thirsty and want a drink. Conan casually found a reason, and then asked curiously, "By the way, Miss Numb, isn't President Nakayama here?"

"Did you say President Nakayama? He had a little stomach discomfort and went to the bathroom. Hisahiko replied immediately, then put the rag aside, squinted and smiled, "Conan, you're thirsty, aren't you?" Then you wait a minute, there's milk in the refrigerator, I'll pour you a glass......"

Numb Hitoko said, walked quickly to the refrigerator, Conan glanced around, and then walked quickly to the desk, glanced at the TV on the desk, and was slightly stunned: "The picture on this TV screen ...... It seems to be the outside of the houseman's cleaning company? Do they have surveillance cameras? And the angle is ...... Seems to be on the roof?"

Conan was very clear about the environment outside the building, and recognized it at a glance, and then his eyes fell on an instrument on his desk, and he squinted:

"This thing seems to be...... The controller of the surveillance camera? This is labeled automatic and manual, is this the mode that can be switched autonomously?"

Conan pondered in his heart, and at this time, Hisahiko Numu walked to the desk with a glass of milk, gently put the milk on the desk, and said with a slight smile: "Conan, the things here are very valuable, you can't touch them!"

"Hmm...... I see, Miss Numb!" Conan smiled knowingly, then grinned again, "...... Miss Numb, I've seen this thing...... It's a surveillance camera, right?"

"Haha, that's right!" Hisahiko Numbi nodded, then continued, "...... This surveillance camera was installed by President Nakayama to monitor the sanitation of the road in front of the building......"

Numb Hisahito's words fell, Conan "ahhhh

Listening to Conan's words, Hisako Numbi let out a "uh", and then spoke: "...... Actually, President Nakayama did the same before. However, two months ago, probably after Mr. Nakayama's sister passed away unexpectedly, Mr. Nakayama requested that a surveillance camera be installed on the roof of the building, because there were blind spots that could not be seen from the window......

"What?"

This surveillance camera was installed after the death of Hideko Nakayama?

Could it be ...... What's in this surveillance camera?

Conan frowned when he heard this, and his heart became vigilant, and Numb Hisahiko continued: "...... As I recall, this surveillance camera was also the electronics factory that our cousin of Director Fujii, Mr. Itakura Taku, contacted - by the way, Mr. Itakura is a software engineer, and he also helped our company design a corporate website, and customers can also place orders from the Internet......"

"Ahh......h Speaking of which, Miss Numb, I would like to ask, did your company take over the cleaning commission of a laboratory here in 2-chome?"

"Well, how do you know?" Hisako was stunned for a moment, then smiled, "Coincidentally, that was the first commission we received on the Internet......

......

Home Treasure Cleaning Company, on the rooftop of the building.

Nakayama Hidesei listened to Shiratori Renzaburo's words, laughed dryly, and then stammered and replied, "Officer Shiratori, you are laughing...... How do I know what you mean if you don't make it clear?"

When Zhongshan Xiuzheng's words fell, Shu Yunwen immediately said impatiently: "Okay, President Zhongshan, don't pretend! What you stuffed into your arms before was a piano line, right?"

"Uh...... What piano line?"

Hearing this, Nakayama Hidesei was shocked, and his body couldn't help but take a step back, while Shiratori Ren Saburo walked quickly to Nakayama Hidesei, regardless of Nakayama Hidesei's resistance, took out a ball of piano from the inside pocket of his clothes, and then looked at Nakayama Hidesei and said, "Mr. Nakayama, isn't this the piano line?

"This ...... This ......"

Nakayama Shusei stammered, not knowing how to explain it, but Nanatsuki looked at the piano wire, then at the surveillance camera in the corner and at the roof of the building opposite, and suddenly realized: "I see, I see! President Nakayama should have tethered one end of the piano cable to the surveillance camera in advance, and then tied the other end to a piece of iron, and then moved the iron to the wall of the abandoned building next to it...... After that, when you saw Director Fujii appear in the alley, you controlled the movement of the surveillance camera, causing the iron on the wall of the abandoned building to fall, and killing Director Fujii, right?"

“...... I think you must have a device in your office that can control the movement of surveillance cameras, right?"

When the words of Yueshui Qitsuki fell, Chengshi immediately floated to Shu Yunwen, and the voice came into Shu Yunwen's mind and said, "Lord Yunwen, my reasoning is the same as that of Detective Yueshui!"

Shu Yunwen narrowed his eyes when he heard this, and then looked at Zhongshan Xiuzheng, who smiled reluctantly, and then said: "I'm sorry, Detective Yueshui, if it's really like what you reasoned, Director Fujii's death may indeed be related to me...... However, at the time of Director Fujii's accident, I was in my own office, and I had no way of determining Director Fujii's location in the alley...... If you think I'm a murderer, how do you explain that? I can't kill people by luck, can I?"

When Nakayama Xiuzheng's words fell, Nanatsuki of Yueshui said "uh", scratched his head and said, "What about this......"

In other words, she doesn't seem to have figured out this technique......

Nanatsuki was a little embarrassed, and then turned his head to look at Shu Yunwen for help, and Shu Yunwen rolled his eyes speechlessly-

What do you think I'm doing?

It's already very powerful for us to find evidence and lock up the murderer?

I'm not a detective, do you expect us to tell a brilliant reasoning that will force the murderer to confess?

Well...... We can find a few people to beat him to his knees and confess his guilt, why don't we try?

。 Writing Chinese Network M.