"yes, I'm still unmarried, what's wrong, is there anything surprising about you?" The medical examiner looked at me puzzled.

"No, nothing." I didn't say what was going on in my heart.

Because in my initial reasoning, since the door of the room was open to the outside, it means that someone must have come to Shan Weiguo's house after the murderer left, and left in a hurry after finding the body, and even forgot to close the door.

"Have you investigated his social connections, or his family, or anything like that?" I asked.

"Investigated. His parents were not with him and had been working in another city all the time. After this person was discharged from the army, he went directly back to S City, found a job here, and rented a house in that community and lived a life alone. ”

"That is," I lit a cigarette, took a puff, and continued: "That is, his social relations are simpler. ”

The medical examiner nodded and said, "You can understand that. Because as a soldier who has returned from the army, and has only been in the city for two years, he should not have too many friends or connections. Besides, he also teaches boxing in a boxing gym. The circle may be smaller. ”

"Have you investigated the monitoring probes in the community?"

"Well, we've brought back the surveillance data, you can go and see it."

"Okay."

With that, I left the medical examiner's room and went to the Forensics Department to retrieve their surveillance video.

In the monitoring of the community, we can clearly track the traces of Shan Weiguo. The floor where he lives is not very high, just on the third floor. So I think he shouldn't have used the elevator when he went upstairs. But we still saw him at the gate of the community.

I saw him carrying a briefcase in his hand and hurriedly walked towards his home.

"This man is him, right?" I asked, pointing to the back figure on the screen.

"There is no mistake in the Shao team, this person is Shan Weiguo." A comrade next to him replied enthusiastically.

That's weird, the briefcase he was carrying, I don't remember finding it at home.

So I approached someone from the Forensics Section and asked, "Have you found this suspicious briefcase in his house?" ”

"Report to Team Shao, we didn't find out."

"Got it."

I scratched my chin thoughtfully.

It's interesting, where the hell did this briefcase go?

There are two possibilities. What is not yet known is whether the briefcase was taken by the murderer or by the person who came in later.

But now I'm more inclined to take it by the murderer.

Judging from the two cups of undrunk water on the coffee table, the deceased should have entertained the murderer before his death. There is also a good chance that they are friends, acquaintances. The murderer is likely to be here for that briefcase. He took advantage of the fact that Shan Weiguo did not face him, attacked from behind, stabbed him into the vital point, and killed him.

Then, this person rummaged through the cabinets at home, just to find the briefcase of Shan Weiguo.

"Keep calling up the surveillance, I'm going to take a look at the picture in the back. If you find another person with a briefcase in their hand, let me know immediately. ”

"Yes."

However, during our more than an hour-long inspection, we did not find that any people who entered and exited the compound after the time of the deceased's death were carrying the briefcase.

That is, that briefcase disappeared out of thin air?

"Are there any other places in this neighborhood that can be entered?" I asked.

"No more. According to the description of the security guards at the gate of the community, there is no other place to enter the community except for this one gate. ”

"Hmm......" I lifted my chin with my hand and began to think.

Since no one came out with the briefcase, it was said that the murderer had opened the briefcase in the neighborhood and taken out what he needed, and then he threw the bag away.

A few small conclusions can be drawn: first of all, there are not many things in the briefcase, and the volume should not be huge, because among the hundreds of people we saw entering and leaving the community on the surveillance, all of them had normal bodies and expressions. I didn't see anyone hiding anything in their clothes.

Secondly, the briefcase should still be in the community. If we find that briefcase, then we'll probably be able to find some important clues on it!

This is our chance.

"Gather the men now, let's go back to that neighborhood again, looking for the throwaway briefcase!" I said to them.

In this way, the people who probably got together a police car, found four young men, and we drove together to the neighborhood again.

A few tall men were looking around the neighborhood for a briefcase, all wearing police uniforms, and the scene attracted many onlookers.

"Officer, what are you looking for?" An old man dressed in orange and red clothes came up to me and asked.

I looked up and saw that she was supposed to be a cleaning staff member in the neighborhood.

"Auntie, have you ever seen such a large, square briefcase?" I gestured as I spoke.

Looking at my gesture, my aunt shook her head at first, but then nodded.

"Officer, the other day, one of my sweeping workers seemed to have found such a thing. It's been placed at the lost and found office over there in the community, but it's been so many days, and there has been no one. ”

I was shocked, I didn't expect a casual question to be so effective. So I shook the aunt's hand and said kindly, "I don't know if you can take us there, we are investigating the case, that thing is very important to us!" Thank you! ”

"Of course you can, that's what we should do."

After that, the aunt in orange and red clothes took us to the lost and found office of the community and saw the briefcase.

It lay quietly in a large box packed with other things, as if it had been waiting for someone to bring it home.

Even though we didn't know if the clues on it had been destroyed, we took the briefcase back to the police station and sent it to the research lab to see if they could extract any valid clues from it.

"I don't know if the fingerprints have been damaged, but we can try our best, and there is still a lot of hope."

"Thank you for your hard work." I thanked them.

After that, I immediately took the two comrades and went to the gym where Shan Weiguo worked.