"When you saw that the kitchen window of Aunt Wang's house was pasted with window paper, in fact, the inside of Aunt Wang's house had already been arranged, and you found that Yan Ping's action of lying on the door and looking out must have been glued before. The problem is that there are two black shadows in the kitchen one after the other, because the kitchen window is covered with window paper, so you can't see who the two black shadows are inside. There is also the time of death of Yan Ping and the security guard, and now it is impossible to detect the death time of the corpse to the minute and second, if the murderer completes the murder process one minute or thirty seconds in advance, the forensic doctor will not be able to detect it at all. However, it is possible that the murderer completed the murder twenty seconds ahead of schedule, and the murderer's purpose was to find a witness, otherwise he would have been busy all in vain. Xu Tian analyzed.

"So what do you think happened in the house at that time?" Lao Chen asked.

"What the murderer can do is to click on the security guard immediately, and then press Yan Ping's head and hit the glass, and then the murderer will flee the scene." Xu Tian said.

"It only takes twenty seconds for the murderer to do these three things?" Lao Chen was very skeptical of this.

"Twenty seconds is too much, if I am asked to do it, ten seconds is enough, because at that time, there were no outsiders in Aunt Wang's house, and the murderer only needed to run a few steps between the living room and the kitchen to do these things."

"And then? Doesn't it take time for the murderer to leave the scene of the crime? ”

"When did I say that the murderer left the scene of the crime?"

"So what do you mean? Did the murderer never leave the scene of the crime? ”

"It's the safest way to evade pursuit."

"Impossible! We are not stupid, there have been police officers since we entered the scene of the crime, and we have carefully searched Aunt Wang's house, as long as we can hide people. ”

"Can I ask when you searched the room?"

"As soon as it was confirmed that there were three bodies in the house, the search began."

"So you searched before the medical examiner arrived at the scene of the crime?"

"That's right." Speaking of this, Lao Chen suddenly figured out some things again. "Could it be that the murderer is hiding there?"

"There's nowhere else to hide but there, it's a blind spot we can't see, and it's the easiest mistake to make in solving a case, but at the end of the day, it's not about you, it's about our customs."

"That's right, Aunt Wang's quilt is the safest place, after I confirmed that Aunt Wang is dead, the only thing that hasn't been touched is Aunt Wang's quilt." Lao Chen said with annoyance. "But it's unlikely! If Aunt Wang's quilt had two people's bodies inside, I wouldn't have been able to see it. ”

"You still don't seem to understand what I mean, it's not Aunt Wang's quilt at all." Xu Tian said.

"So what do you mean? You wouldn't say that Aunt Wang herself was the murderer, right? Lao Chen said in surprise.

"Do you think there will be anyone else?" Xu Tian said with a sinking face.

Lao Chen suddenly felt a chill down his spine, and a terrifying aura instantly opened up the meridians of his body.

"The truth is already obvious." Xu Tian said. "When you first entered Aunt Wang's house, you were already calculated, who is this Aunt Wang? What does it look like? You didn't know these things until you met Aunt Wang, and when you first met Aunt Wang last night, no one else was there, and from the first time you said that you went upstairs and saw the door of Aunt Wang's house open, I knew that things would not be so simple. Our previous reasoning was that Aunt Wang did not post a couplet on the door in order to hide it, and this clue corresponds to Aunt Wang's mental abnormality, as long as Aunt Wang doesn't want us to know that her wife died, this matter seems to become very reasonable. But there may be another meaning in the matter of opening the door, that is, the murderer wants you to have a preconceived idea, if you don't see the door open in Aunt Wang's house after going upstairs, then there is about a 50% chance that you should go to Yi Shuai's house to see the situation first. Aunt Wang left the door open so that you could enter her home, so that what you see will be considered by you to be the real Aunt Wang. After that, all the strange things you encountered at Aunt Wang's house were also planned by Aunt Wang, the purpose is to make you think that Aunt Wang has a mental problem, so that you will leave. Aunt Wang is old, and the community knows that Aunt Wang's illness is caused by missing her wife, so you can only leave temporarily. ”

When Xu Tian said this, Lao Chen was completely desperate.

"Because it was night." Xu Tian continued. "You can only call the staff of the community to verify Aunt Wang's condition, at that time the staff of the community has already left work, it is unlikely that they will come to Aunt Wang's house, and the property manager will not go to work at night, as for the security guard, this kind of thing will not think of going to the security guard for verification in the first place, so the Aunt Wang you saw at first sight was considered by you to be Aunt Wang herself, and you also verified this matter after experiencing some strange things in Aunt Wang's house. So when you enter Aunt Wang's house for the second time, you will naturally think that the dead Aunt Wang lying on the bed is the real Aunt Wang. ”

"Then what if I don't go back to Yi Shuai's house that night to investigate?" Lao Chen said.

"This matter has nothing to do with you, the murderer doesn't have to act in front of you, I think the murderer should have wanted to play this play in front of Yan Ping at first, but you went upstairs first, so in the end this play was seen by you." Xu Tian said.

"That's not the point, the most important thing is that I was played by the murderer." Lao Chen said.

"It can only be said that the murderer is too cunning, and it is the corpse of Aunt Wang on the bed that really deceived you, in fact, this method designed by the murderer is also very risky, if the opponent the murderer meets is me, then he may not be able to successfully escape. But the murderer meets someone like you who has more traditional moral concepts, which is also considered the luck of the murderer. Xu Tian said.

"Don't say that! Actually, I'm too pedantic. Lao Chen said.

"I can't say that, I have always respected you in my heart, and it is because of your style of doing things, this is your personality charm, and it cannot be said to be pedantic." Xu Tian said.

"Don't comfort me! I made this mistake, so I'll make up for it myself! While it's not too late, the killer shouldn't be able to escape. Lao Chen said.

"Are you going to catch the killer now?" Xu Tian asked.

"What if it weren't?" Lao Chen said.

"Don't worry, listen to me talk about the rest of the matter, it may be a little different from what you expected." Xu Tian said with a confident look.