In the evening of the same day, the cause of the fire in the psychological clinic had been investigated, and it was the empty power strip that caught fire, but Dr. Lin and his assistant were very sure that no one had touched the air conditioner that day.

The cause of the fire in Lao Chen's office was because a cigarette butt ignited an alcohol cotton, and after testing, the cigarette butt was indeed left by Lao Chen, and the alcohol cotton is unknown. But Lao Chen was very sure that after smoking, he threw all the cigarette butts in the ashtray.

The cause of the fire in Xu Tian's house has not yet been investigated, because the fire is so big that almost the entire building is burned, but it is certain that the source of the fire is not in Xu Tian's office, but the hot pot restaurant on the third floor.

Lao Chen, who returned to Aunt Wang's house to investigate, has also returned, but there is not much to gain this afternoon, because the fire in Aunt Wang's house is also very large, and almost all the things in the room have been burned, leaving no traces.

As for the cause of the fire, there was a problem with the gas pipe of Yi Shuai's house, and the source of the fire was upstairs.

All the fires can almost be determined, about the portrait of Aunt Wang's house, Lao Chen has also investigated clearly, that photo is indeed Aunt Wang's wife, so the fire at Aunt Wang's house has nothing to do with the black and white photos.

But the most incomprehensible problem for Lao Chen is that all the reasoning Xu Tian made in the office before has been overturned, the dead person is Aunt Wang herself, Lao Chen specially coordinated the staff of the street and the community to identify the body, and some of Aunt Wang's neighbors compared it through photos, that person is Aunt Wang.

At around seven o'clock in the evening, Lao Chen and Xu Tian returned to the police station in a sullen mood, Lao Chen's mistakes had completely angered his superiors, and the accident of cigarette butts made Lao Chen feel doubly aggrieved.

"Looks like we're being targeted." Lao Chen said.

"It's not just us who are being targeted, but also the cases we handle, although the results of your investigation are very surprising to me, but I am absolutely sure that the fire in Aunt Wang's house will definitely not be a coincidence, this is a premeditated incident, and all the spearheads of this incident are pointed at us." Xu Tian said.

"I also know this question very well, Yi Shuai's case is about to be solved, and the case that happened in Aunt Wang's house is about to connect the whole case, but a fire burned all the traces, and the most important thing is that the dead Aunt Wang turned out to be the real Aunt Wang, which really makes me feel inexplicable." Lao Chen said.

"Have you been to see Aunt Wang's body today? Are you sure that the body lying in the morgue is the same Aunt Wang you saw yesterday? Xu Tian asked.

"I'm very sure, and I checked Aunt Wang's house after the fire, although the bed was burned, but the general outline is still there, and I didn't find a place to hide people on that solid wooden bed." Lao Chen said.

"I'm not sure about that, but I'm sure the killer must have been in that room at the time, because I believe in your words, and I believe that you can keep the scene of the crime yourself." Xu Tian said.

"I trust my own perceptions, but I'm grateful that you believe in me." Lao Chen said.

"Now that the crime scene has been burned down, we can only start from the scene of Yan An's death, have you investigated anything about Yan An?" Xu Tian asked.

"Yan An doesn't have any breakthrough in the suspicious investigation, but I think the assumption that Yan An and Yi Shuai plan to commit suicide that you made before still needs to be considered." Lao Chen said.

"There must be omissions in the clues we searched from the very beginning, and the case cannot be unsolved." Xu Tian said.

"I also want to have an answer, but this case is really difficult to solve, there is no murderer to make us suspect, and when we suspect the community security, he dies immediately. Later, we suspected that it was Aunt Wang, but the investigation results showed that the dead Aunt Wang was the real Aunt Wang, and now there is really no clue at all. Lao Chen said.

"That's not right! There must be a breakthrough, judging from the whole case, it seems that we are always following the footsteps of the murderer, and when a suspect is found by us, the suspect will die, which is very similar to the practice of Zhi Nian Tai Sui. But I think that if this time it is really the ruling Tai Sui who is committing the crime, then he must have other purposes. Xu Tian analyzed.

"What do you think it will be?"

"If you think about it, the fire is obviously linked to the case, which means that the black-and-white photo incident is linked to Yi Shuai's case, but I always feel that the connection between these things is a bit far-fetched, as if something is wrong."

"Sounds like that's what you're saying."

"Fire! What is wrong is the fire. Xu Tian said loudly.

"Fire? Any questions? Lao Chen said suspiciously.

"Haven't you noticed? You and I, as well as Dr. Lin and Mr. Jin, each of the four of us received a black-and-white photo, but after the fire at Aunt Wang's house, we have only experienced three fires. Xu Tian said.

"That's right! The fire between Dr. Lin and Mr. Jin occurred in the same place. Lao Chen said.

"That's not right! There's something wrong with that. Xu Tian said.

"Do you think there's a lack of a fire?" Lao Chen asked.

"There were four fires, but I have a new idea, maybe we misunderstood who these fires were aimed at." Xu Tian analyzed.

"What do you mean by that?" Lao Chen said suspiciously.

At this moment, Li Ming suddenly broke into Lao Chen's office.

"Team leader, no!" Li Ming said breathlessly.

"What's wrong?" Lao Chen hurriedly asked.

"It's on fire! Yan An's death scene was burned! Li Ming said.

Xu Tian and Lao Chen were immediately stunned, and when the two rushed to the hotel, the fire had been extinguished, and as Xu Tian expected, the fire started in the back kitchen.

There were no casualties, but listening to the description of the staff in the back kitchen, the fire started very quickly, although the fire has been extinguished, but the back kitchen has burned to the ground.

The owner of the restaurant sighed again and again, because the business was very bad because of the death of the kitchen, and now the boss can't even open the store.

After investigation, the cause of the fire in the back kitchen was also related to gas, although the investigation results were very authoritative, but Xu Tian and Lao Chen did not buy it in their hearts.

Both of them knew very well that the fires were aimed at themselves, but there was no evidence of this matter at present, and the two could only hold back their heads and investigate.

It was another cold night, Xu Tian and Lao Chen didn't know that these fires were just the beginning, and the same drama was also being staged in the coastal cities in the east at this time, and the owners of those fire scenes had received their own black and white photos.