Mi Hua is a high-end apartment building. Gao Cheng follows Xiao AI and Bumei into the elevator to the cat owner's house.

"But how did brother Chenghu come?" The light Yan is surprised a way, "you don't like cat of?"

"Don't you want to adopt a captain?"

"It's impossible. Even if the uncle doesn't support him, he should sell the captain. After all, it's worth 20 million yen..."

"Don't think about it," Gao Cheng said in black. "I just want to see how that cat is worth 20 million."

"Mr. Yizi's home is in front of him..."

Out of the elevator, Conan to lead the way, suddenly found that there are two people in the door of the room to unlock.

"Mr. Yizi!" A fat uncle opened the door with the anti-theft clasp and yelled, "I'm the administrator. Are you ok?"

"What's the matter?" Gao Cheng ran up and asked, "what's the matter?"

The man dressed at home next to the manager responded, "I heard a strange noise next door..."

"Meow!"

A tricolor cat came out of the door and saw people meow, leaving a string of blood red cat footprints on the ground.

The man at home said in horror: "blood... There is blood on the cat's feet!"

Gao Cheng picked up the cat and looked into the room. In a deep voice, he yelled to Xiao AI at the back: "call an ambulance quickly!"

Administrator Na Na way: "don't know what situation call ambulance?"

"It's not a small thing that the owner of the room doesn't respond to the bloody footprints."

Gao Cheng gives the three color cat to Bumei and takes out the fishing line and chewing gum from his arms. First, he ties the fishing line to the U-shaped buckle rod of the anti-theft buckle. The knot is adjusted to the top of the U-shaped buckle rod and fixed with chewing gum. Then he takes out a piece of iron wire, bends it into a U-shaped shape and fixes it next to the anti-theft buckle inside the door with chewing gum to hook the fishing line.

Ready to work, Gao Cheng gently pulls the fishing line to close the door, and finally tugs hard. Just listen to the sound of a lock inside the door, and the anti-theft button is easily pulled open.

"The door is open now?"

On the side of the management officer several Lengleng looking at Gao Cheng, witness Gao Cheng unlock Conan speechless collapse eyelids, whispered: "I say Chenghu, how can you take these things?"

"Just... Just in case."

Gao Cheng opens the door in a hurry and follows the cat's footprints on the floor to the inside room.

God knows how he brought the tools to unlock the lock. I didn't think he would use these tools to unlock the lock before, but the thief's entry just has something to do with this kind of U-bar lock.

The footprints of the cat in the room extend directly from the bedroom inside. Gao Cheng just goes through a corridor and finds a fat man lying in the bedroom. His head is full of blood and there is a pool of blood on the ground. Fortunately, there is still a weak pulse. It's not too late.

From the scene

There was an upside down chair on the bed. The lampshade was opened right above. The floor next to the body was also scattered with pieces of lamp tubes. There were new lamps in the corner. There were blood stains on the bedside table. It looked like it accidentally fell and hit the bedside table when changing the lamp tubes.

But it was no accident.

Fat uncle has a slipper on one foot. There's no reason why he doesn't take off his shoes when standing on the bed to change the lamp tube. Moreover, the chair on the bed is also directly on the soft and uneven quilt. If he is changing the lamp tube, he should take away the quilt to avoid shaking.

There are also pieces of lamps on the ground. If there is a problem, the lamps will be black, but there are no pieces at the scene

These doubts all point to one direction, the scene is just disguised as an accident.

Murder in secret room

What the hell.

Gao Cheng stands up and looks at Conan, who is still checking the scene.

Can we also encounter cases like this?

Shortly after the ambulance took the fat uncle away, the police car also rushed to the apartment downstairs. Gao Cheng checked the access control system in the room by the way.

Because it is a high-end apartment, the entrance guard is set up in the hall on the first floor. Anyone who rings the doorbell will be recorded. There are three people within an hour of their previous visit, and each of them has his own name.

The murderer is probably among the three.

Because the neighbors heard strange sounds, which happened to be during this period.

Of course, it can not be ruled out that someone did not ring the doorbell, but entered the apartment while other residents were out, just like he and a group of children, who said they wanted to surprise the cat owner.

The owner of the cat will be surprised to see him as a famous detective

It's more like a shock.

Gao Cheng looks into the living room.

There are wrapping paper and old pet basket for cats on the tea table. It seems that they are going to give the tricolor cat to someone as a gift. There are residual tape and folded marks on the wrapping paper, and several places are damaged. It seems that they were torn apart after wrapping.

There are scissors and adhesive tape beside the wrapping paper, which means that it is right to pack on site, but there is no colorful ribbon for gift wrapping in this room.

The key is to find out who is the last guest to enter the cat owner's house, or the last guest to leave.

Judging from the scene situation, the prisoners should have been killed temporarily, and the techniques were all designed and arranged on the scene, that is to say, the three visitors were highly suspicious.

The reason why the key is the last guest to leave is that these people need someone to help them open the door.

"Officer Sato!" Takagi took the three suspects to the field, "we have found the three people who were recorded by the access control system!"

"So fast?"

"Because the address book has contact information, but..."

Gao Mu looks at three people outside the entrance, a fat aunt, a freckled woman with glasses and a bearded man with glasses.

"The only person who entered the room was the first tavern owner's wife. The second Miss ASO just chatted at the door. The last Mr. lacquer House said that he rang the doorbell at the door and went back when he didn't respond."

"Well," Sato said, holding his arm and observing several people, "it's very suspicious. Maybe before the first guest leaves, the second person will come. After the second person leaves, the first person can also commit a crime..."

Gao Cheng also took a look at several people in the back.

It's not about who is likely to commit the crime. It's about judging who lied.

The third Mr. lacquer house, who entered the apartment, said that he rang the doorbell at the door and left when he saw no response

Normal people should doubt if something is wrong, because they let themselves into the apartment, there is no reason not to be at home or ignore themselves.

"Mr. lacquer house," Mr. Gao Chengchao asked, "you are the last one to come here. Is it Mr. Yizi who opens the entrance guard for you on the first floor?"

"Well, I don't know," the bearded man frowned. "Because he didn't speak, I don't know if he drove it."

"City, city household!" Gao Mu grabs Gao Cheng in a hurry and says with a wry smile, "if you want to inquire, you'd better say hello alone?"

"Yes," Gao Cheng said with a smile. "I'm just a little curious."

That's enough.

If it was the prisoner who opened the door to the lacquer room, he should have been in the living room at that time. When he was in a hurry to decorate the secret room, how could he let people come over.

The criminal is this Hu Zi Nan. Yes, the question is what secret chamber technique was used.

It should not be too complicated to be able to come up with and apply it in a short time

Gao Cheng looks at the door lock again.

It takes two steps to set up the secret room. The door is locked inside and the anti-theft button is hung.

"Yes," the fat woman said when she was asked by herself, "I did meet Mr. Yizi today. He served me black tea in the living room and stayed for about ten minutes for a song on the record."

"Records?"

"I was collecting Classical Jazz Records. Mr. Yizi said that he found a record I was looking for. When he asked me to pick it up, he played a song for me..."

Sato asked, "did the doorbell ring while you were here?"

"Well... I've been listening to music through headphones..."

"As I said just now, I just stood at the entrance of the entrance and said a few words to him, but I didn't enter the room," the freckled woman, who turned to the second question, said modestly, "because I haven't made an appointment, and he seems to have guests..."

Freckle female is a former employee of Mr. Yizi's company. She was expelled because she made a big mistake. This time I came here to thank Mr. Yizi for his help in introducing her new job.

As for the last Hu Zinan, he and Mr. Yizi were friends in college, and they were writers of the same year. The latter had no grades and changed careers early. This time, he came because of a bottleneck. He wanted to discuss the idea of novels with Mr. Yizi, which he often discussed before.

At this time, Gao Cheng left and went back to the scene with a roll of gift wrapping ribbon in hand.

"Chenghu?" Sato looks puzzled, "you are..."

"I wanted to verify the prisoner's secret room technique, so I bought something that disappeared from Mr. Yizi's home," Gao Cheng explained. "The packaging in the living room is old gift packaging used before. Mr. Yizi should use it directly, and then it was opened in the living room. The problem is that there is no ribbon for packaging anywhere..."

"Was he taken away by the prisoner?" Sato looks cautiously at the three suspects.

"I don't think it's taken away," Gao Cheng cut a long ribbon with scissors. "But the ribbon is really the prisoner's secret room technique, the key is right.

I've been wondering since just now that Mr. Yizi was entertaining guests in the living room. How could the crime scene be in the bedroom? I soon thought about it

Gao Cheng looks at Bu Mei and sees the three color cat with the ribbon meow in his arms.

"Probably when the package was unpacked, the ribbon was carried into the bedroom by the cat. The cat likes this colorful, thin, long and rope like thing best. That bedroom should be the place where it used to hide treasure. Mr. Yizi had an accident when he was looking for the cat in the past."

"Is that so?" Conan's brain is the fastest. He understands Gao Cheng's idea almost at once, but his eyelids collapse. When did city dwellers know cats so well“ Just give it a try. " Gao Cheng hangs the ribbon in front of tricolor cat. After shaking twice, he successfully turns on the switch of tricolor cat. With a meow, he grabs the ribbon and runs into the bedroom“ Behind the books on the shelf! " Gao mu, who caught up with tricolor cat, was surprised to find the tricolor cat treasure house in the bookshelf. In addition to the ribbon just now, there is also a ribbon with a knot“ This is... "The props used by prisoners to lock the door," Gao Cheng said as he entered the bedroom. "As a sudden crime, the prisoners wanted to think of this method because they saw the cat take away the ribbon. They locked the door through the ribbon, but it was not without loopholes. Under this condition, the fingerprints on the ribbon could not be handled."“ The next step is to lock the door. " Xiao AI looks at Gao Cheng who is confident in reasoning with a bright light in her eyes. Find the result first and then deal with it. More and more people have their own methods