Because they received a call from the deputy detachment, Bai Song and his two companions first found a monitoring room to stay in. It was relatively quiet there, and there were no cameras or recording equipment in the monitoring room.

This monitoring room is quite strange. The big screen is a newly replaced 65-inch TV, but the image is very unclear. It is obvious that the camera has not been replaced, only the monitor has been replaced. The image and monitor are obviously different from each other.

"Apart from this, are there any other main clues?" Bai Song was ready to listen to what Dai Zhita had to say.

"Yes, the most important thing is that a driver had an impression of this person because he didn't speak when the driver chatted with him. He just showed the driver an address and asked him to drive over. The driver thought he was mute, so he had an impression of him," said Dai Detachment. "The driver successfully identified Lin Liang."

"What about the interval between the two cars?" Bai Song asked, "How long did he stay at Lin Qing's place?"

"There is no specific video footage of where the car stopped, but we can roughly infer that it took him 10 to 15 minutes to get off the car and take another taxi," said Dai. "It feels like he went there alone for something and then left. Even if he walked quickly, he would not have stayed at Lin Qing's house for more than 5 minutes."

"Then what was he doing..." Bai Song thought for a moment: "Did the driver who recognized Lin Liang mention what Lin Liang was carrying in his hand?"

"He said no, he remembered that Lin Liang only brought his cell phone," Dai said, "but he paid with cash."

"Then what is he going there for?" Bai Song felt confused.

"According to expert Ouyang's judgment, there were two people at the scene who committed the crime, which definitely could not be completed within 5 minutes. So he should not be the murderer. The murderer..." said the deputy detachment: "We still suspect Li Ruibin and his son."

After Dai Zhidu finished speaking, he found that Bai Song did not reply to him. Then he realized that he had not answered the question asked by Bai Song. He wanted to say something, but did not know what to say.

"Is he just going to take a look and has no other intention?" Liu Shuyuan asked.

"That's too much of a coincidence, isn't it?" Sun Jie said, "The time is almost the same as the time of the deceased's death. Logically speaking, you can run into a murderer if you go there at this time."

"This timing is indeed a coincidence, too coincidental," Bai Song has a good memory: "Between the time he got off the bus and the time he got on the bus, it happened to be the time when Lin Qing's family was using electricity..."

Bai Song suddenly woke up when he said this: "Captain Dai, I suspect that Lin Qing did not die three days before we found the body! That amount of electricity was used to confuse us! Lin Liang was probably just turning off the air conditioner and other equipment at that time!"

"What!" Team Dai seemed to have been electrocuted.

All current inferences are based on the determination of the time of death of the deceased.

All the investigative directions were also based on the time three days before the body was discovered.

This case is very special. The deceased was frozen, and the time of death cannot be determined from the body itself. Therefore, the turning point of power consumption is the only basis for the police to judge. If this basis is false, then all the conclusions drawn from it are false.

The greatest contribution made by Dai Zhituan and others was to discover clues from the power consumption.

but……

If this was set up by the criminals in advance, and they just turned off the electrical appliances three days before the body was found... then this...

The police were completely fooled.

…

"He went to turn off the power..." The deputy captain was still trembling: "So, Lin Qing has been dead for many days. This is a deception... a trick on us..."

The deputy detachment became withdrawn and felt a strong sense of frustration in an instant.

"Wait a minute," Liu Shuyuan said, "In such a short time, if Lin Liang entered Lin Qing's home and turned off the air conditioner and other equipment, how could he escape Ouyang Xinyu's detection? There is a logical problem here. He was there for less than five minutes, so turning off the power must be enough, but I don't believe it can clear the traces. If someone else cleared the traces for him, then he didn't need to go, and that person could just turn off the power."

"That makes sense," the captain heard it clearly. After hearing Liu Shuyuan's words, he felt much better. What Bai Song said was just a hypothesis, and there was no other theoretical basis to support it.

"I haven't had much contact with Ouyang Xinyu," Sun Jie said, "but in our daily work, besides Huadong, I am the only one who investigates the scene. If it is really as you said, then he entered the house again, and even I can't avoid this trace."

"You forgot one thing," Bai Song thought for a while, "Just now, Wang Huadong made a very clear statement in the phone call about the time of death hypothesis proposed by Ouyang. Ouyang Xinyu said that the footprints of the deceased Lin Qing who was struggling may have been there for half a month. That means that when we found Lin Qing's death, ten days had passed."

"That's not right," said Dai. "Lin Qing's mother chatted with Lin Qing five or six days before the death of the deceased."

"Did you make a phone call or send a voice message?" Bai Song asked back.

"Uh..." Dai Zhituan suddenly realized that he was a little stupid. Lin Qing's mother found Lin Qing's body because the murderer used Lin Qing's phone to send a message to her mother. In this case, the "Lin Qing" who chatted with Lin Qing's mother before might all be fake.

"None of these can explain the traces of turning off electrical appliances," Liu Shuyuan insisted.

"Who said," Bai Song said, "that turning off the air conditioner and other equipment must require touching?"

"Turning off the power switch outside?" Liu Shuyuan immediately retorted, "Then the refrigerator and other things at home are out of power."

"Times have progressed," Bai Song pointed to the large screen in the monitoring room. "Electronic equipment has progressed even faster. I just thought of one thing. Lin Qing's residence has many smart devices, including smart speakers. If you want to turn off the air conditioner or something like that, you just need to open the door and say a few words at the door, and everything will be turned off."

"Intelligence?" Liu Shuyuan and Sun Jie both fell into deep thought.

There was no doubt that Lin Liang had the key to Lin Qing's residence. Lin Liang had lived here before, so it was not difficult for him to secretly make a copy of the key. If this was the case, people really didn't need to enter the house to do it!

"No, there is another problem here." The deputy team leader took a deep breath and he had completely recovered. "Lin Qing's house was robbed twice. Do you remember? After the first burglary, she changed the lock. After the second burglary, she changed the lock again. And this lock has no signs of being unlocked by a technician recently. Lin Liang, how come you have a new key?"

Bai Song almost forgot the clue that Lin Qing's house had been robbed twice (Chapter 1150), but Dai's team was still quite solid. He not only knew that Lin Qing's house had been robbed twice, but he also knew details such as Lin Qing had changed the locks both times.

"Deputy detachment," Bai Song said, "What you said makes sense, but it also illustrates the problem. It is not normal to be robbed twice, this is the first point. Secondly, calling the police twice does not mean that there must have been only two times. It can only mean that Lin Qing only discovered it twice. If there was a third time, and the purpose was to enter the house to steal the key and make a copy, would Lin Qing be able to discover that a thief had entered the house?"

"What was the purpose of the two previous thefts?" Captain Dai was still puzzled.

"There are two suspects in this case. One is most likely Lin Liang, and the other is currently unknown. The first two thefts might have been caused by the other suspect." Bai Song said, "And the subsequent thefts might have been caused by Lin Liang stealing the key, or Lin Liang's accomplice stealing the key, making a copy, then opening the door and returning the key. Lin Qing changed the lock, and no one gave her the extra keys. They were probably kept at home."

"Wait a minute," Liu Shuyuan looked around and then went to the door to take a look outside. "Bai Song, since Lin Qing's time of death can be moved back, then Lin Qing's father did have time to commit the crime. Is it possible that he did it?"

Hearing this, Bai Song was also stunned. When he asked Lin Qing's mother just now, he felt that there might be something wrong with Lin Qing's father. However, he quickly regained consciousness: "If it was Lin Qing's father who did it, then how did Lin Liang die? You know, our previous speculation was that Lin Liang died three days before the body was found."

"That's right. If Lin Qing's father is really the murderer of Lin Qing, then he should also be the murderer of Lin Liang. The Lin Liang case requires a lot of preparation, and he must have been at the scene at the time. In addition, he needs to clean up the traces later. Lin Qing's father has an alibi for all these." Liu Shuyuan said: "Then we should be able to try now to see if the electrical appliances in Lin Qing's home can be controlled by smart speakers and other devices."

"This is very simple," said the deputy detachment. "We have people near Lin Qing's residence. I will send someone over to try it immediately. If it works, we will immediately start investigating further. I believe that the murderer deliberately did not let us know the time of death of the deceased because he must be afraid that we would investigate further."

"Yes," Bai Song told the deputy detachment about some of Ouyang Xinyu's findings and conjectures: "I have never understood why the murderer sent a message to Lin Qing's mother three days later to ask her to come over. In fact, he was afraid that the police would not be able to find a longer period of electricity usage records. Then, we may not know about the murderer's deception! I have to say, this murderer's calculation is really amazing!"

"That's not right. How could this electricity usage record only be for three days? It could even be for three months?" Liu Shuyuan still raised an objection.

"You know, the murderer may not know, and he may also be afraid that the police will retrieve too little," said Sun Jie.

"There is another reason," Bai Song said, "The murderer had Lin Qing's phone in his hand, and he was afraid. If it took too long, Lin Qing's mother would take the initiative to go to Lin Qing's house and call the police, and then the murderer might be located by the police. So, three days is a good middle point. Is this reasonable?"

"Reasonable," Liu Shuyuan agreed.

"It's really not easy to get your approval." Bai Song found that after not seeing Liu Shuyuan for nearly a year, he had made a lot of progress and could frequently find loopholes in his logic.

"What are you saying?" Liu Shuyuan hummed twice and began to think about the case.

After continuing to communicate with the deputy team for a while, a clue came from the deputy team's WeChat. At the residence of the deceased Lin Qing, the smart speaker was indeed able to control the air conditioner and other equipment in the home!

Such a setting can directly explain many things.

It is almost certain that Lin Liang was the murderer who killed and dismembered Lin Qing, and froze her in the refrigerator after the murder.

After Lin Qing's death, the air conditioner and other equipment in her residence were still running 24 hours a day. A few days later, Lin Liang took the time to go there, turned off the electrical appliances, and falsified the time of Lin Qing's death.

Bai Song had never heard of this setting. If some words had not reached that level, he would not have thought that it could be done this way.

There are several points here. The first is that Lin Liang's trip was not during rush hour, and the taxis in Yuzhou are famous for being fast, so the total round-trip journey was shortened to about 40 minutes. The second is that Lin Liang had lived nearby and was very familiar with the area, so it was easy for him to hide from the cameras, and it only took him ten minutes to do such a thing.

Therefore, among Lin Liang's friends, Lin Liang has never left their sight for more than an hour. This means that Lin Liang also wants to create an alibi for himself.

"I'm not interested in Lin Liang now," Bai Song said, "With his intelligence, he absolutely wouldn't be able to come up with such a plan, and if he was a little smarter, he wouldn't be killed by someone. There must be someone behind this, and this person is the real mastermind."

"Indeed, but if Lin Qing had been dead for half a month, Lin Liang wouldn't be so scared by then, and it would be normal for him to go to the bath center to take a bath." Sun Jie also nodded.

"Director Bai, you guys are really amazing. If we, with our stupid brains, were asked to think about this kind of thing, we would never have thought of it. If you continue to study on that fake time of death, then..." Team Dai was really impressed. His thinking in this regard was completely blocked, and he just couldn't think of it.

Moreover, the Dai Detachment had never come into contact with devices such as smart speakers. They should have only started to be launched in large quantities this year. There were some before, but they were even rarer.

"It was just a coincidence," Bai Song said, "What I said may not be correct, but our thinking should be open now. However, you don't have to worry, Dai Zhizu. We still have several clues to investigate this case. The murderer thinks he is awesome and thinks he has planned everything, but no matter how professional he is, he is afraid of us, not to mention that we have solved a big mystery now."

"That's fine with me," the deputy captain said with full of fighting spirit: "To be honest, as a police officer, handling cases like this is what a police officer should do. Compared with this case, the cases I handled before are really nothing!"

Captain Dai was a little excited. He had experienced so many murder cases over the years, but none of them gave him such a headache and excitement. If this case could be solved, he would brag about it until his retirement!

Just at this moment, Dai's cell phone rang, and he had to hang up Bai Song's call first.

Less than five minutes later, the deputy detachment called Bai Song again and said, "The soil that buried Lin Liang has been found at the construction waste dump. Director Bai, do you want to ask an expert to take a look?"

"Okay, I'll talk to him, and we'll go too." Bai Song said immediately.