Lao Chen and Xu Tian rushed into the office after returning to the police station, Lao Chen did not let the burned sofa move, Xu Tian and Lao Chen did not say a word, and immediately dismantled the sofa.

There was some residual smell of alcohol in the gap of the sofa, but Lao Chen didn't remember when he took the alcohol cotton.

"I definitely didn't bring this alcohol in, but I'm not sure who would bring it into my office." Lao Chen said.

"It's impossible for someone inside the police department to do this kind of thing, and if I were your subordinate, I would never dare to commit a crime under your nose." Xu Tian said.

"What's going on here? And my cigarette butts, as anyone who knows me knows, I always throw them in the ashtray. ”

"But you're not in the habit of plucking your cigarette butts."

"What do you mean...... Someone picked up my cigarette butt outside and put it on the couch in my office? ”

"No, that shouldn't happen, and even if someone picks up your cigarette butt, there's absolutely no chance that person will sneak into your office."

"Then I can't figure it out! What the hell is going on? ”

"I think there's only one answer to that question."

"You're not going to say I brought it in myself, are you?"

"The important thing is the ignition device, when can the fire burn is the most important thing, and the main problem is that the fire in your office is not too big, the fire is quickly extinguished, which is the most important thing."

"According to your argument, the person who set the fire must have no way to make the fire burn."

"That's right, that arsonist can't control the fire, he can only cause a small part of the fire on the couch in your office, and that person doesn't know where your home is."

"That's right! If he knew where my house was, that person would never have burned down my office. ”

"But that's not the only reason, I don't think the person who set the fire would risk setting it on fire for such a simple reason."

"And what do you think?"

"It's clear that the arsonist had some drunkard's intention not to drink."

"You don't think that man's target is me?"

"From my comparison of other fire scenes, this should be the truth. Removing the fire in the back kitchen of the hotel tonight, the four previous fires have told us the answer, among which the fire in Aunt Wang's house and my office is relatively similar, the fire point is neither Aunt Wang's house nor my office, but the fire makes people feel like it is aimed at me or the case. ”

"Then you mean to say that it was just a coincidence that Aunt Wang's house and office were burned?"

"I can't explain it by coincidence, except that I think these two fires are the two sites that the arsonist wanted to burn, because the fires in your office and the psychiatric clinic are simply not enough to threaten the lives of others, so I don't think the four arsons are the same thing at all."

After listening to Xu Tian's inference, Lao Chen also felt that it was very reasonable, but at this time, Lao Chen couldn't sit still, and his superiors only gave Lao Chen two days, and now most of the day has passed.

The direction of the next search has also been determined, Lao Chen still continued to investigate the cause of death of Yi Shuai and Yan An, and Xu Tian entered the investigation of the cause of the fire.

After Lao Chen left the police station, Xu Tian had no place to go at all, the office was burned down, Dr. Lin's psychological clinic had also been burned, and Lao Chen's office had just experienced a small fire, and now Lao Chen's office could no longer stay, especially when Lao Chen was not there, Xu Tian, an outsider, had no reason to continue to stay in the office.

Now Xu Tian's only place to go is Teacher Jin's ward, Xu Tian rented a family bed in the hospital on the pretext of taking care of Teacher Jin, and he could put it in Teacher Jin's ward at night to rest.

Dr. Lin was busy with the affairs of the clinic, so the task of taking care of Mr. Jin fell easily on Xu Tian's shoulders.

After getting everything done, Xu Tian lay on the bed and raised his eyes, originally Xu Tian wanted to have a good talk with Teacher Jin, but today's Teacher Jin was in a bad mood, since Xu Tian arrived, Teacher Jin has not said a complete word.

"What are you doing here? You should have a lot going on right now, right? Came here to spy on me? Teacher Jin asked in a low voice.

"You're finally talking, but as soon as you open your mouth, there are three questions, don't you think it's a little embarrassing for us to say such things between us?" Xu Tian said.

"Do you still have the heart to sleep here at a time like this?" Teacher Jin questioned Xu Tian.

"My brain needs a night's rest, and if I want to investigate the fire, I can only ask you a few things from your mouth, and there are no survivors of the other fire scenes." Xu Tian said.

"I've already said what I need to say, I was in my room preparing for a nap when the fire broke out, and I didn't see anything else."

"I'm not going to ask you anything about the fire."

"And what are you here for?"

"What am I going to do, Teacher Jin should be very clear, so we don't have to say those polite words between us, right?"

"You trust me?"

"If I didn't trust you, I wouldn't have rented a bed to sleep next to you."

"You want to ask me a question about Dr. Lin, right? First of all, I can guarantee that this fire was not set by Dr. Lin, because I know Dr. Lin's obsession with the psychological clinic, she will not destroy the clinic, not to mention that I did not die in this fire, which can also explain the problem. ”

"How much do you know about black and white photos?"

"All I know is that the picture was enlarged from the one-inch photo on my teacher's badge, and nothing else."

"You are a teacher because of your work, so I don't think you will leave a lot of photos in one inch, right?"

"Of course, I destroyed the rest of the photos, and the person who sent me them must have known that I had been a teacher."

"This clue is very important, at least we have the scope to investigate."

"Where's your picture? What period is the photo? ”

"Like yours, it's also a one-inch photo, but my scope is a bit bigger, I'm not as careful as you, I've just graduated less than a year ago, there are many places to use one-inch photos, and before my office caught fire, I still had some unused one-inch photos in my drawer."