Officer Mumu nodded when he heard the words. Even if he knew that there were only two keys, he was not sure. This was a case of murder in a secret room.

"This lock is specially made and no one will open it." Hattori Heiji said after looking at the door lock.

"Don't be so absolute. Since it is a lock, there is a way to open it. Believe it or not, I can open it for you." Chen gave him a light look and said.

"Then give it a try." Hattori Heiji said in disbelief.

Hattori Heiji took the key and locked the door, but Chen took out a thousand copies and opened the lock easily.

When Hattori Heiji saw it, he couldn't help but be stunned. Even the policemen were stunned. They opened it in a second. Is this a professional thief?

At this time, Hattori Heiji began to face Chen squarely, and there were not many people who could open locks, especially those who were so skilled at opening locks.

"So saying there are only two keys doesn't mean anything."

"It's so uncomfortable, my ears are starting to ring, I really want to end this case as soon as possible, and then go back to sleep quickly." Conan wiped his nose and said groggyly.

"Let's put this down first. I think it's better to find out everyone present first, and it's better to prove that you're not there."

Hattori Heiji's gaze turned to Tsujimura Takayoshi and the others.

"Are you doubting us?" Tsujimura Takayoshi asked very badly.

How could he kill his own father, how is this possible, this dark-skinned guy is really annoying.

If it wasn't for the police here, he would definitely knock Hattori Heiji to the ground.

"It's not impossible, please cooperate with our investigation." Officer Mumu walked over and said.

Although they are all relatives of the deceased, their relatives may also be the murderers.

The police have already said it, and they can only cooperate.

"By the way, Brother Mouri, you must figure out the murderer before that Hattori Heiji."

Officer Mumu pulled Maori Kogoro and walked to the side.

"This is for the sake of our Tokyo, please."

Mouri Kogoro was stunned for a moment, then nodded. He also understood what Officer Meguro was thinking. If someone from Osaka could help solve the case, wouldn't it appear that the people in Tokyo were too incompetent.

"Mr. Koike, the housekeeper, you said you've been chatting with your neighbors before?"

"Yes, this neighbor can testify for me."

The Sergeant Muji nodded.

"Miss Sachiko and Mr. Guishan, did they arrive not long before Mrs. Tsujimura came back?"

"Yes."

Officer Mumu took notes, and then looked at Miss Sachiko and Mr. Guishan.

"When Mr. Koike went to the door to pick up Mrs. Tsujimura, were you at the top?" Officer Mumu asked the two of them.

"We arrived at my study room, but the study room was locked, and he didn't answer, so we came down soon." Gui Shan said.

"."After we got down, we saw my mother standing at the door." Kusanagi Yukiko said aloud.

"What about Mr. Liguang?" Officer Mumu finally looked at the father of the deceased.

"I've been watching TV next door to the study." The old man said with his head lowered.

"Chen, do you think the murderer will be among these people?" Xiaolan asked Chen in a low voice.

Chen chuckled and looked at Conan. Now Conan's eyes were blurred, and his body shook violently.

"The book that the deceased visited before was so unusual, and the opera played at the murder scene. Opera, yes, I already know the murderer's modus operandi."

Just when Conan was about to say who the murderer was, he fell to the ground and fell into a coma.

"What's wrong with you, Conan?" Xiaolan was shocked when she saw Conan collapsed.

Chen walked over and looked at Conan, and knew that it was Bai Gan's effect that had an effect.

"He seems to have a fever, hurry up and call the doctor, let him rest first!" Chen said aloud.

"Then (money is good) let him go to my room." Tsujimura Takayoshi came over, picked up Conan and walked to his room.

"Conan should be all right?" Xiaolan was a little worried.

"Don't worry, that kid's life is very tough." Chen patted Xiaolan's shoulder and said.

Conan will never die no matter what.

"Heiji Hattori, where have you been before?" Officer Meguro looked at Heiji Hattori who had just disappeared suddenly and now appeared again.

"It's not important, the important thing is that I already know the prisoner's technique." Hattori Heiji's face showed a confident smile bitterly.

Now he seems to be saying, you all stay out of the way, I, Hattori Heiji, are going to start pretending.

Chen leaned against the wall, quietly watching Hattori Heiji pretending to be forceful.

"Chen, what are you laughing at?" Xiaolan asked suspiciously.

"It's nothing, I'm watching the fun." Chen hugged his hands and looked at the front quietly.

Chapter 835 Kudo Shinichi Appears!

"It seems that the doors and windows of this study are closed, but it is not without a gap." Hattori Heiji said.

Seeing the question marks on everyone's faces, Hattori Heiji nodded with satisfaction, he enjoyed this feeling very much.

"The crack of the door, the crack of this door." Hattori Heiji gestured towards the crack of the door.

"Hahaha, I really laughed at me. You mean to say that the murderer threw the key into the pocket of the deceased through this crack?"

Mouri Kogoro looked at Hattori Heiji mockingly, and finally had a chance to laugh at this guy, Mouri Kogoro always looked at this guy unhappy.

"Dad doing this, will it be a bit too much?" Xiaolan couldn't help but said, looking at Maori Kogoro who was madly mocking.

"Let's just sit and watch, there's no need to worry about it." Chen pulled Xiaolan to the side and sat down.

"Xiao Lan, are you hungry?" Chen asked Xiao Lan.

They were called here when they were preparing to eat, and it was late now.

"That said, I'm indeed a little hungry." Xiaolan rubbed her stomach and said shyly.

"Hey." Chen took out a box of cakes and handed it to Xiaolan.

Xiaolan was stunned, where did Chen get the cake?

"Chen, where did you come from?" Xiaolan asked curiously.

"Of course it was stolen."

"what?"

"Just kidding with you, this is what I conjured with the magic 367 technique, how is it?" Chen asked with a smile.

"It was made by magic, but is it really edible?" Xiao Lan looked at the cake in her hand suspiciously.

Aren't magic tricks basically fake? This should be just a tool!

"No, this is a real cake, you can taste it if you don't believe me."

Xiaolan nodded, then opened the package, she believed that Chen would not deceive herself.

Hattori Heiji began to demonstrate the criminal's methods of crime.

"The murderer first stabbed a poisonous needle from the deceased's neck, killed him, then snatched the key, and then pulled out the fishing line tied to the needle."

Hattori Heiji took out the fishing line, and then fixed the other end to the key pendant.

After that, the iron needle was passed through the pocket of the deceased, and then the police officer Mumu, who was temporarily acting as the deceased, was placed on a chair, posing with a chin.

Xiaolan watched curiously while eating the cake.

"Xiao Lan, the cream is sticking to her face." Chen took out a tissue and helped Xiao Lan wipe the cream from the corner of her mouth.

Xiaolan's hands froze, and she turned her head to look at Chen, with a touch of emotion in her eyes.

"Thank you, Chen."

Chen looked at Xiaolan in a speechless manner, how easily this (bhcc) was moved.

But Chen didn't know that he was the first person who cared and took care of her like this. Although Fei Yingli cared about Xiaolan very much, she couldn't see Xiaolan for a long time due to her work and separation.

And Mouri Kogoro, an alcoholic, has to let Xiaolan take care of him!

As for Kudo Shinichi, forget it, except that the case is reasoning, there is nothing else in his mind.

Hattori Heiji accidentally saw Chen's side, not only was slightly surprised, didn't he find out that Xiaolan was Kudo Shinichi's girlfriend? Is Kudo Shinichi being green?

Thinking of this, Hattori Heiji felt a sense of sympathy for Kudo Shinichi in his heart, that guy is really pitiful! Also a poor man! The girlfriend seems to have been snatched away.

"Brother Hattori, why don't you continue reasoning?" Officer Megumi asked Hattori Heiji suspiciously.

Heiji Hattori shook his head when he heard the words, and threw all these gossips out of his mind. In his eyes, solving the case was the most important thing.

Hattori Heiji held both ends of the fishing line in his hands, then walked out the door, closed the door and locked it with the key.

After that, he pulled out the key and began to pull the end that was tied to the iron needle. The key slowly entered the door as Hattori Heiji pulled.

However, when it was about to pass through the crack of the door, it suddenly got stuck and the key was stuck inside.

Unlike in the original book, in reality, this door gap seems to be a little small.

Hattori Heiji tried to push the key in with force, but the key couldn't get in, mainly because the key was a little too big.

Hattori Heiji picked up the key, then awkwardly opened the door and walked in.

Seeing everyone staring at him, Hattori Heiji's face became even more embarrassed, the reasoning seemed to be wrong, and it couldn't be done at all, the door gap was too small.

"Hahaha!" Chen couldn't help laughing.

Seeing his confident look before, I don't know how he feels now. Benchen wanted to wait for Kudo Shinichi to appear and slap him in the face, but he didn't expect that before Kudo Shinichi appeared, Hattori Heiji was slapped in the face.

"No way! It's a waste of time, and high school students are really unreliable." Kogoro Mouri took the opportunity to fall into the trap.

Hattori Heiji ignored it, his entire face wrinkled, and he began to reorganize the clues.

It has now been proven that what he believed to be the truth was wrong, so the reasoning has to be repeated.

Tsujimura Gongjiang frowned. In fact, even she didn't expect that the key would be stuck there and couldn't get in. Damn, I should have tried it in the first place.

"No need to reason, the murderer is me." The old man Tsujimura Riguang suddenly stood up and said.

Tsujimura Gongjiang looked up at Tsujimura Riguang, then lowered his head.

Hattori Heiji was stunned. The most likely culprit he reasoned before was Tsujimura Riguang, but now everything has been denied by him.

"It's you? Why?" Officer Mu Mu stared blankly at the old man who admitted that he was the murderer.

"I'm trying to make up for the mistakes I made back then." Tsujimura Riguang glanced at Tsujimura Gongjiang with guilt in his eyes.

"Chen, I'm full, let's go and see how Conan is doing? The doctor should be here soon!" Xiaolan said to Chen.

But before he stood up, a figure appeared outside the study, and this person was Kudo Shinichi.

Looking at Kudo Shinichi reappearing, Tatsu's mouth showed a radian.

"Huh?" Kudo Shin turned his eyes and looked at Chen, just in time to see the inexplicable smile on his face.

Kudo Shinichi frowned slightly, wondering what the **** this guy was laughing at? But now that he has recovered, Kudo Shinichi is very happy.

Now Kudo Shinichi doesn't know, he just briefly changed back to his original form.

Seeing that Officer Meguro and the others were going to grab Tsujimura Riguang and leave, Kudo Shinichi said immediately, "Wait, Officer Megure, this person is not the murderer."

Hattori Heiji has been staring at Kudo Shinichi since he appeared, has this guy appeared!

"Brother Kudo, where have you been these days?" Officer Meguro was a little surprised when he saw Kudo Shinichi.

In the past, many of their cases were solved by Kudo Shinichi. Although it was a bit embarrassing for the police to let detectives solve the case, it was enough to solve the case.

Now Officer Megure misses Kudo Shinichi a little bit.

"Cough, I went to a place to solve the case." Kudo Shinichi said with a light cough.

Xiaolan looked at Shinichi with complicated eyes. Kudo Shinichi had been missing for a long time. Now that she appeared, Xiaolan felt that she did not have much excitement and happiness in her heart.

Chapter 836 Lovers eventually become brothers and sisters!

"Xiao Lan, long time no see." Kudo Shinichi waved at Xiao Lan.

"Yeah!" Xiaolan hummed softly, her expression a little dull.

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