At seven o'clock in the morning, as soon as the sky was bright, Lao Chen returned to the office with a tired body, and as soon as he pushed the door, Lao Chen saw Xu Tian sleeping on a chair with his coat on.

It seemed that Lao Chen's door was a little louder, and Xu Tian rubbed his eyes and got up from the chair.

"Officer Chen, how's the case going?" Xu Tian asked.

"The case is almost closed, but there are still a few doubts that have not been sorted out, and there is not enough evidence yet, but the truth has basically been investigated." Lao Chen said.

"After Li Zhitong sent me back to the police station, I saw Li Ming, and I also learned the general facts of the case from Li Ming, do you think Yan Ping is the murderer?"

"Isn't it? All signs indicate that Yan Ping is the murderer, let's talk about the murder that happened in Aunt Wang's house first, I am also a witness, according to the conclusion of the investigation overnight, Yan Ping is the murderer. ”

"Although Li Ming told me some facts about the case, some details I think are a little unreasonable, such as why is the kitchen of Aunt Wang's house pasted with window paper? Also, why did you hit this case so coincidentally? I think the prisoner may be misleading you. ”

"What do you mean? Are you saying that I was calculated by the murderer? Lao Chen said with an unhappy face.

"You can't say that! I'm embarrassed like that! Xu Tian said.

"Li Ming has already investigated Yan Ping's movements in the past few days, especially the night when Yan An and Yi Shuai died, Yan Ping disappeared for an hour, and in that hour, Yan Ping could do a lot of things." Lao Chen said.

"Don't you think it's all going too well? I have seen both Yan An's death scene and Yi Shuai's death scene, and it can be said that the murderer did not leave any clues at the scene of the crime that would be valuable to us to solve the case, from this point of view, I think the murderer's IQ should be very high, and the murderer will not let us search for his actions before the crime. Xu Tian analyzed.

"And what is your judgment?" Lao Chen asked.

"Somebody is creating these events, it's obvious thing." Xu Tian stretched and said. "At the beginning, the direction of our investigation was to track down the murderer, and it happened that the murderer was locked soon after, but on the surface, it seems that the murderer is Yan Ping, and through Yan Ping's movements in the past few days, it can be judged that he is the murderer, and if it were me, I might think so."

"So what made you change your mind?" Lao Chen asked.

"Because I was on the way back to the police station, I overheard Li Zhitong say something about whether I had the idea of committing suicide, and this sentence reminded me." Xu Tian said.

"Is there anything wrong with that?" Lao Chen felt a little puzzled.

"I think Yan An and Yi Shuai may both want to commit suicide, but they made a mistake in the process of committing suicide, and someone moved on the rope after they hung themselves up." Xu Tian said.

"Is there any basis for these statements of yours?" Lao Chen asked.

"The scene of the crime is just my speculation, and the real basis is Yan An and Yi Shuai's behavior." Xu Tian said.

"You mean......" Lao Chen seemed to have understood Xu Tian's words.

"That's right, it's Yan An and Yi Shuai's behavior at the scene of death." Xu Tian said.

"I understand that the reason why there are no traces at the death scene of Yan An and Yi Shuai is because the two of them did not resist the perpetrators."

"That's it! Regardless of whether Yan An and Yi Shuai played games with the murderer, or they had other exchanges with the murderer, it was impossible to make the crime scene so clean, at least Yan An's death scene should leave a little more fingerprint traces, and Yi Shuai's home should also leave a little more footprints. However, there are not too many traces at the scene of the two crimes, which shows that Yan An and Yi Shuai should have suicidal tendencies, they should have wanted to commit suicide, but the murderer did not let them succeed, just when Yan An and Yi Shuai prepared a rope to hang themselves, the murderer suddenly appeared and added a few ropes to them. ”

"There seems to be some truth to your speculation, but what about the evidence? You can only speculate based on the cleanliness of the crime scene, and you can't close the case in this way. ”

"No, we have at least one more breakthrough."

"Do you mean Aunt Wang's house?"

"That's right, this case is the key, the murderer successfully stripped himself out of the case, I don't think Yan Ping is the murderer, or that point of view, if Yan Ping is the murderer, he won't be stupid enough to leave a flaw for himself."

"I think it's a little unreasonable for you to speculate, I'm completely sure that no one in Aunt Wang's house has ever come out, and the police arrived in time at that time, and the scene of the crime was quickly cordoned off."

"I didn't say that someone from Aunt Wang's house would come out at that time."

"So what do you mean? Could it be that the murderer stayed at Aunt Wang's house after committing the crime? ”

Speaking of this, Lao Chen suddenly felt that his eyes were dark, and one of the most important clues was ignored by Lao Chen.

"Have you thought of the problem?" Xu Tian said with a smile.

"I ...... I'm so confused! Lao Chen patted his head, annoyed.

"Now the case has not progressed to the point of no return, I believe that the murderer should not commit another crime after this step, after all, the murderer's purpose is to strip himself out of the case, if we don't publicize it to the outside world and continue to solve the case, the murderer should be reined in." Xu Tian said.

"It's electricity, isn't it?" Lao Chen sat down on the sofa and asked.

"It's already obvious! The security guard died of an electric shock, but nothing about high-voltage electricity was found in Aunt Wang's house, and the facts could not be clearer. Xu Tian analyzed.

"It's too late! It's too late! The murderer has long since fled, and now we have no clues to track down the murderer. Lao Chen felt very distressed.

"I don't think things have reached the point of no return, about that murderer, in fact, he is next to us, Officer Chen, you may have seen him!" Xu Tian said.

"You mean ......"

"Since the medical examiner has concluded that the security guard died of electric shock, this conclusion is very close to the truth. At that time, there must have been such a scene in Aunt Wang's house, someone outside had taken down the wire, and the security guard touched the wire under the murderer's design, so he was shocked. The question is the wire, why would the security guard touch the wire? There is also the action of lying on the table when the security guard died, and it can be judged from Li Ming's description that the security guard must have been lying on the table by himself, which is a very clear clue, and this case is not without a clue. Xu Tian said.

"The security guard himself was lying on the table because I was knocking on the door, right?" Lao Chen said.

"I guess that's what the room was looking like." Xu Tian said.