Detective from The Future

Han Bin took the letter and checked it repeatedly, but there was no obvious mark. The words on the letter were also printed, and the handwriting could not be read.

Han Bin asked, "When was the last time you checked the express cabinet?"

Song Jingshan thought for a while and replied, "It should be before the business trip. I left on the afternoon of September 6, and checked the express cabinet on the morning of September 6."

Han Bin calculated it, today is September 11, five days have passed, and threatening letters may be delivered within these five days.

"Who has read and touched this letter?"

"I was alone. I was afraid that my wife was worried and didn't tell him. My daughter and my eldest son would not live with us. I didn't tell them either."

"When you took the letter, did you see any suspicious people around?"

"I was so confused at the time, I didn't care about that much. I came directly to the police station." Song Jingshan leaned forward and asked with wide eyes, "Captain Han, you said this person who wrote the threatening letter. , Will he be the murderer of my son."

Han Bin put the threatening letter back into the envelope, "It is possible. Have you received a threatening letter before?"

"Yes, I have received it once before."

"When?"

"About 3 months ago."

"Remember the exact time?"

"It seems to be June 10."

Han Bin wrote down in his notebook, "Did you call the police at that time?"

"Yes. I was the police from the Huaguang Road Police Station. The police also went to my community to investigate, but they did not find anyone who wrote the threatening letter."

"Is there a difference between that threatening letter and this threatening letter?"

"It makes no difference." Song Jingshan took out a letter from his pocket and put it on Han Bin's desk. "Look at it, this is the original letter."

It is also a white envelope with a piece of paper inside that says, "Song Jingshan, you must die, I will let your family be destroyed sooner or later!" ’

There is no difference between the two threatening letters.

Han Bin felt that something was wrong, "Since you have reported to the police, the first threatening letter should be kept by the police as evidence, why is it in your hands."

"Hey, I was angry when you said this. I called the police, but it was useless. The police didn't catch anyone and said it might be a kid's prank. When I heard it, I felt something was wrong. This obviously didn't treat my case as a prank. It's the same thing. Since the police said it was a prank, there is no way to file a case. I'm afraid they will come back if they lose the threatening letter."

"What investigation methods did Huaguang Police Station take at that time?"

"I went to the two policemen and checked the express cabinet. They were going to monitor from the property. They said they were going back to check the monitoring and asked me to wait for notifications at home." Song Jingshan sighed, "In the beginning I reported No small hope, thinking that there might be news the next day, who knows, after waiting for one day and one day, no one notified me after a week."

"The next week, I took the initiative to call and ask. The policeman who answered the phone said that he did not understand the situation and asked me to go to the police station to find the policeman in charge of the case."

"I am also right. This is for us to take the initiative. I really have to take the initiative. I went to the police station again and asked the person in charge of the case. As a result, they said that the surveillance had been completed and no suspicious persons were found. Threatening letter received."

"I said I didn't receive it again, and the policeman in charge of the case told me that this may be a prank. Let me go back and think about whether I have had any conflicts with anyone recently, and that they will continue to investigate the case."

"I believe you are a ghost..." Song Jingshan became more and more angry, but considering that Han Bin and others were also police officers, the latter words still swallowed.

"Later, I waited for another week and went to the police station again."

"Before I spoke, people asked me if I received any more threatening letters, and I said no."

"Yes, people say this is a prank, and there is insufficient evidence to file a case, so this matter will be nothing." At this point, Song Jingshan showed an angry look and choked up, "If they find out the threatening letter earlier People, maybe my son won't die!"

Han Bin didn't answer the call, and he couldn't answer this.

"In addition to checking and monitoring, has the police station conducted other investigations?"

Song Jingshan thought for a while, "They said they had visited our community, but there is no more information."

Han Bin asked, "Have they done a technical test on the threatening letter?"

"I don't know about that." After speaking, Song Jingshan showed a touch of self-deprecating expression, "I guess it shouldn't. They didn't take the threatening letter seriously. In their words, I was neither personally hurt. There is also no property loss, and it simply does not constitute the standard for a case."

Han Bin didn't say much about this, because the police officers at the police station were probably acting in accordance with the regulations. If you have to hold accountable, that's also a problem with the li law agency.

Han Bin can't control it, nor can it. All he can do is handle his case in a serious and responsible manner.

"Did you find any other abnormalities in the recent period?"

Song Jingshan pondered for a moment, then shook his head, "No. No one has looked for me, and something unusual happened. I thought it was a prank, but who would have thought... hey..."

"Three months ago, did you offend anyone?"

"I can't think of it. I shouldn't have it. I have always been kind to others and valued peace. I have never done anything wicked."

Han Bin said, "If you think about it carefully, it may be that someone has offended before, and the other party only took action three months ago."

Song Jingshan was silent for a long time, "I really can't remember."

"Captain Han, do you think the person who wrote the threatening letter was the murderer of my son? If he really wanted to retaliate against me, wouldn't it be that I killed Bo Chen!"

Han Bin said, "I can’t give you an accurate answer until the case is clear. It’s still my previous sentence. Think about who you have committed. If the murderer really came to you, you provided it. The clues will be of great help to the police."

Song Jingshan took a deep breath, "I understand, I must think about it."

Then, Han Bin rescheduled the task again, because of insufficient manpower, he transferred two more players from the second group.

Then divide the players into three groups.

One group is responsible for checking the mobile phone number, and the second group goes to the Huaguang Police Station to find out the situation and adjust the papers.

Han Bin took people to the community where Song Jingshan lived.

Before leaving, Han Bin sent both letters to the technical team and asked someone from the technical team to help detect them.

...

Rongding Garden Community.

This community is not far from the Yuhua branch. It is a high-end community with a high greening rate and is a large-sized house.

Han Bin made a round in the community. The monitoring facilities in the community are very complete. The community entrance, corridor entrance, elevator, and underground garage are all monitored.

Song Jingshan's family lives in Building 6.

There is no monitoring next to the courier cabinet in the lobby on the first floor, and there is no way to see who sent the threatening letter directly.

Han Bin went around in the community, and he knew it.

Then, Han Bin took people to the property company.

The person in charge of the property company is Feng Lianhai, a middle-aged man in his forties. After learning the identity of Han Bin and others, he behaved very politely.

"Captain Han, don't hesitate to tell me if you have any instructions, our property company will definitely cooperate."

Han Bin said, "I want to call up the surveillance from September 6 to today."

"No problem, I can take you to the monitoring room now."

Han Bin asked Li Qin and Bao Xing to go to the monitoring room for monitoring, but he himself stayed in the property lobby. "How many exits are there in Building 6 where Mr. Song is located?"

Feng Lianhai thought for a while, "There are two in total, one comes out of the unit door and the other comes directly out of the garage."

Han Bin asked, "If I walk down the stairs to the garage, will I be caught by the camera?"

"Yes. The door to the underground garage from the stairway is facing a surveillance camera. As long as an outsider enters the unit building, it will definitely be photographed. In terms of community security, we are still very considerate."

"How many families live in Building Six?"

Ma Lianhai opened his mouth and said, "Building No. 6 has seven floors, each with two ladders and two households. There are 14 households in total."

Han Bin nodded. This is the advantage of a high-end community. Ordinary communities are twenty or thirty stories, with two staircases and four households. This unit has nearly a hundred residents.

Fewer households are still beneficial, reducing the difficulty of investigation by the police.