After the lost Xie Yunmeng's response, Yun Yeyao and Mo Haiyou searched in the spot for a long time but found no gap. When the phone was about to run out of power, they had to give up and walk back.

Because he was bent over and hooked, neither of the two looked up at the top of his head. There seemed to be a gap in the edge of a wooden board, and he would not notice it if he didn't look carefully in the dark.

Hearing Xie Yunmeng's voice, but not seeing anyone, Yun Yeyao's worries can be imagined. He was thinking about where Xiao Meng was, especially after knowing that the murder occurred, Yun Yeyao's gray brain cells were like an open floodgate, and everything that happened back and forth rushed back to his brain in an instant.

After thinking for a long time, Yun Yeyao stopped and said, "Xiao Zuo, what time is it now!"

Mo Haiyou reluctantly glanced at his phone and replied: "At 10:20, have you thought of anything?"

"I don't think this matter should have started here, maybe it has started since S City. Moji didn't seem to know any actors at all. When I said we were an actor friend of the owner of the house, he looked very confused at that time. And... Xiaozuo, I think Xiao Meng and I might have been used."

The pause in Yun Yeyao's words seemed to point the finger at the male actor who started telling the story. Mo Haiyou said: "In this way, let's go back to the room first and then analyze this matter. Now it is inconvenient to move here, and it is easy to be blocked by people to go back."

Speaking of this, the two of them accelerated their pace. Mo Haiyou was groping the side of the wall, looking for the window when they came out.

However, strange things always happen in groups. After walking for a long time, the two of them didn't touch the border of a window, as if they were on the wrong path, and there were only wooden boards without gaps on both sides of the passage.

This time, the forensic doctor began to get nervous. He repeatedly tapped the wooden board with his hands and hoped to find a place that could be moved or opened. As a result, they did not gain anything until they reached the end of the other end of the passage.

"There are only the administrator's mother-in-law and Mo Ji left in the house, and there is also an unspoken preface. Among them, there must be murderers or accomplices. If you really want to trap us, it will be difficult to find a breakthrough, because the agency must be inside the house. Unless there are tools that forcefully break it, we can't do anything in such a narrow place." Yun Yeyao said, squatting on the ground with a look of worries.

Mo Haiyou didn't say anything, and he still didn't give up checking the wooden boards up, down, left and right. It was better to act than to sit and wait for death. This principle is good.

Just when both of them had no choice, a crying sound came faintly in their ears, the girl was crying and calling for help.

After a little identification, Yun Yeyao found that the crying sound came from the wooden board next to him that blocked the end of the passage, which meant that there was still an unknown space behind the wooden board. Yun Yeyao's spirit suddenly rose, and he said to Mo Haiyou: "Xiao Zuo, is there any way to break the wooden board here?"

Mo Hai glanced at him with a slant and replied, "I'm not Xie Yunmeng! But maybe you can try it." After that, Mo Hai took out a small box from his pocket, which was the scalpel he carried with him.

Yun Yeyao saw the bright scalpel and immediately shrank backwards, giving up space for the forensic doctor.

The forensic doctor handed Yun Yeyao a cell phone with a faint light left in his hand. He roughly figured out the edge of the boards, and began to use a scalpel to scratch up and down the gap, just like the lock-opening master opening the door for the person who forgot the key.

The crying sound behind the wooden board became less and less, accompanied by the sound of coughing, and it was almost impossible to hear clearly when calling for help. However, it was obvious that there was not a single person inside, and there were at least two or three trapped people.

Taking advantage of the moment when Mo Haiyou was looking for the lock, Yun Yeyao shouted loudly inside: "Hey! Are you okay? Can you hear me talking?"

No one answered at the beginning, probably because they were too far away, and they didn't react. After shouting several times, Yun Yeyao heard someone running over, and then the girl's voice came out: "Please help us open the door, hurry up! Someone here is dead!"

"Who are you?" Yun Yeyao asked.

“We are residents of Asuka Grass Hotel.”

“Is it another Asuka Grass Hotel?”

"Yes."

"So have you seen a man over 1.85 meters tall, he was a detective who arrived here yesterday?"

"Yes, but it's not around us now. Because of our game, he and Grandma Yan should have come to the sewer pipes towards here, but they don't know what happened and have never appeared."

The voice inside answered in detail. This made Yun Yeyao frown. It was rare for a little girl at the murder scene to keep such a calm mind. And she said that Xie Yunmeng was in the sewer pipe, so what was they approaching was the sewer?

It's impossible! Xie Yunmeng's voice didn't seem to be coming from the depths of the ground! Yun Yeyao felt it was on top of his head.

But he did not stop talking to the girl because of his thoughts, and continued, "How many people are you in there now?"

"Uh... there are four, four."

"What about the corpse?"

"Two, they all fell down suddenly for no reason, and we couldn't wake up no matter how we shouted."

"If you fall suddenly, how do you make sure they are dead?" Yun Yeyao continued to lure people inside the board to talk to him, and gradually extended the topic to the murder case.

The girl seemed to be a little panicked at this time. She paused for a moment before saying, "I touched their nostrils and I was not breathing anymore."

"So what about the heartbeat? Is the heartbeat still there?" Yun Yeyao asked her quickly.

"You can't touch it either. You can open the door and rescue us. It will soon fall into darkness! As long as you enter the Feibi Grass house, we are willing to tell you everything in detail."

"Wait a minute, we don't have the key, and we are now trying to open the door!"

"What? Who are you?" another girl inside asked in a crying voice.

Yun Yeyao replied: "We are also people who come to stay at Feiniaocao Hotel. We are friends with the detective you met. However, after we entered Feiniaocao Hotel, we only saw the administrator mother-in-law and Moji. Can you tell me what your name is?"

After pausing for a while, the girl who spoke before said, "My name is Xiaorou, and the one I just spoke was Huanhuan. Among us, there are Duan Hongye and Xiaowei. Xiaowei is now taking care of Mr. Duan, and his condition is not very good."

"Is that Mr. Duan injured?" Yun Yeyao asked.

"No, he is in extreme sorrow because of his death." Xiaorou's answer was not so sure, and there were also voices asking about his companion during this period.

"I remember Moji should have another sister Moli. Didn't she be with you?" Yun Yeyao heard Xie Yunmeng mention Moli so he asked casually.

Unexpectedly, this question made everyone in the room silent, especially Xiaorou, who was speaking, did not make a sound again for a long time. Yun Yeyao waited for a while and felt something was wrong. He knocked on the wooden board with his hand and asked again: "What's wrong with you? Why don't you answer me?"

At this time, a sound came from the right side of Mo Haihai that seemed to be pried open. Then, the wooden board was opened to the side under the push of Mo Haihai. He put the broken scalpel into his pocket, pulled Yun Yeyao, and took the lead in getting into the narrow and low wooden board.

There was still a faint light inside at this moment. Yun Yeyao quickly followed Mo Haiyou to see what happened. First of all, there was a staircase extending upwards. Before they could walk far, they could see a small square room. At the door of the room, there was a little girl full of panic and anxious face, probably Xiaorou.

Yun Yeyao asked: "Are you Xiaorou?"

"Yes, Xiaowei, Qiaoqiao, and Mr. Duan are behind me."

At this time, Mo Hai spoke right, his voice was very low, with a gloomy feeling: "I think there is no problem this time, Xiaoyao, you take them out first, I'll take the autopsy." After that, he signaled Xiaorou to get out of the way, and then he got into the room himself, without pulling Yun Yeyao.

After digesting Mo Haiyou's words on the spot, the actor surprisingly did not say anything worried. He was about to urge Xiaorou to leave quickly, but a loud blow came from inside, followed by Xiaowei's scream: "What are you doing?!!"

"I let him wake up and go out with you. The access has been opened. If you don't leave now, will you have to wait for the murderer to come back?" When Mo Haiyou's words sounded, Xiao Wei was so scared that she dared not respond.

Xiaorou also said to the person inside: "This gentleman is right. Let's go out quickly and talk about anything when you get into the house!"

After about five minutes of struggle, the four people successfully followed Yun Yeyao and left the small room. Can they go back to the house? Let's put it aside for now. Let's take a look at the situation on Mo Haiyou.

As soon as Mo Haiyou entered the inside of the wooden board, he felt something was wrong. He smelled a pungent suffocating smell, which was a little similar to the burnt plastic smell just now, but Mo Haiyou knew that these were two completely different substances.

This taste is very light and almost evaporated. If it weren't for someone who was particularly sensitive to it, it wouldn't be noticed at all. Mo Haiyou confirmed that it could not cause any harm to people at this moment, but Yun Yeyao and others would rather not stay here for a long time.

Xiao Rouhe Huanhuan's voice was hoarse when she spoke just now, accompanied by a cough. Now I think it has nothing to do with crying, it should be the result of the suffocating smell.

After everyone left, Mo Haiyou did not immediately check the body, but took the candle that was about to burn to the root and searched for the source of the smell throughout the room.

He covered his nose and used the candlelight to explore the corner of the room. When the candlelight approached the corner of the wall at one side of the stairs, a light yellow smoke suddenly rose from there and soon disappeared.

After Mo Hai confirmed the position right, he moved the candlelight away and found that a small piece of wall mud fell down in the burning place, and in the middle of the wall mud, it was obviously dug a little bit. He penetrated the candlelight deep into the inside of the dug place, and indeed a darker yellow smoke rose up. The forensic doctor quickly put his face away to prevent the smoke from touching him.

What he discovered was a poison gas that takes effect very quickly. After sniffing into the body, it will cause respiratory ulcers, lung edema, and then suffocate to death. The time it takes very short. A sufficient concentration of poison gas can cause the person who sniff to die immediately. (In future novels, whenever the author mentions cases of using poison to kill people, the name of the poison will be hidden to avoid imitation and exploration. Please forgive me.)

Obviously, the poison gas was infused into the wall hole in advance and then sealed. The location of the wall hole was exactly the height of a person's hand. Mo Hai gestured right afterwards, which was almost lower than the height of the wall holding his own hand, indicating that the girl was more likely to be infected.

This may be a random murder trap, that is, the target of the murderer is everyone in this room, and anyone who can get into the trap can do it. Mo Haiyou glanced at the girl's body at his feet and thought. If anyone can do it, then the people here will threaten the murderer? But why didn't he simply fill the poisonous gas into the whole room? No one can escape this kind of thing.

So Mo Haiyou ruled out the possibility of random murder. First, the murderer used poison gas to kill people, to save time and power trouble. There must be a specific opportunity that he could take advantage of. This opportunity will lead someone who is in danger to the murderer to the wall and die of poison gas.

Second, it seems that the murderer closed the entrance and exit in the passage not to trap them in it, but to let them discover and rescue the survivors. The lock of the wooden board outside was obviously not locked, otherwise it would be difficult for his scalpel to open in such a short time.

Third, if the above two speculations are valid, then when the murder occurs, other survivors must be at a distance from the victim's location. Moreover, the murderer chose the place where the drug was hidden near the entrance and exit, which should be to avoid other people being caught.

After analyzing this, Mo Hai turned around and looked at the man lying on the table. He did not die of poisoning. This can prove that the poison gas did not evaporate around the table and the murderer did not want to kill everyone.

The girl's body does not have to waste time studying. By looking at her face and the situation inside her mouth, you can determine the cause of death. Mo Hai walked right towards the man lying on the ground on the other side. He leaned close to the candlelight and took a closer look at the man's condition, and looked under his nose with his hands. Then he placed the candlestick on the table, and before it was extinguished, he carried the man and walked out.
Chapter completed!