Detective from The Future

Han Bin asked the property company for a list of the owners of Building 6 and their contact information, which will be needed for investigation and monitoring.

As for the express cabinets in Building 6, there is a gap at the top of each cabinet, which is specially used to deliver letters. The possibility of leaving DNA and fingerprints is very small, and even if there is, it may not be the murderer.

After Li Qin and Bao Xing finished copying the monitoring, the site survey was basically completed, and Han Bin led people back to the Yuhua branch.

After Han Bin returned to the office, he found that Li Hui had returned from the Huaguang Police Station. "You kid is quick."

Li Hui said, "After handing over with the comrades at the police station, I will be back."

Han Bin yawned and sat in a chair, "What clue do they have?"

"After receiving Song Jingshan's alarm, they made a special trip to the community where Song Jingshan lived, and they also copied the surveillance video of the community." Li Hui put a document in front of Han Bin, "This is the file at the time. Song Jingshan's transcript contains the history of their investigation."

Han Bin flipped through the files and found that Song Jingshan's transcript was roughly the same as today's transcript.

However, there is a transcript that caught Han Bin’s attention. According to Song Jingshan’s account, he discovered that there were more letters in the express cabinet on the morning of June 10th, and the last time he checked the express cabinet was on the morning of June 8th. The crime time was between June 8th and June 10th.

In the previous transcript, Han Bin also asked about the first threatening letter and the exact time, but Song Jingshan only remembered that it was the police who reported on June 10th and found the threatening letter. The last time he checked the express box I can't remember time.

Apart from this, there are no other valuable clues on the dossier, and the investigation process is also very simple.

Han Bin threw the dossier on the table and glanced at everyone, "Don't say anything, check the surveillance."

"Not only should we check the surveillance for the last five days, but also the surveillance on June 8, June 9, and June 10, but also compare the surveillance video of the first threatening letter with the second threatening letter. Find out the common characteristics of the suspect."

"Yes." Everyone split up.

Not long after, Du Qi also returned from the communications company. He was responsible for investigating the call records of ‘Brother Zhao’ to see if he could find clues about Brother Zhao from his contacts.

After Du Qi reported to Han Bin, Han Bin asked him to take Mai Jun to check together.

This is also a tedious job.

Han Bin poured a cup of tea and stood by the window thinking about the case.

This threatening letter seems a bit abrupt, but if you think about it, you will find that the timeline of the threatening letter is probably before Song Bochen's death.

Song Jingshan was on a business trip on September 6, which means that the suspects might deliver threatening letters on the 6th, 7th, 8th, and 9th. Song Bochen died on the afternoon of September 9th.

The murderer probably sent the threatening letter first, and then killed Song Jingshan's son Song Bochen out of revenge.

Song Bochen's death also coincided with the sentence of family destruction and death.

However, if the murderer has already decided to kill, what is the point of sending a threatening letter?

Is it possible to remind Song Jingshan? This doesn't make sense.

Of course, there is also a threatening letter that may be delivered after the murderer killed someone. The purpose is to stimulate Song Jingshan.

If this is the case, the two people's enmity will be great.

It stands to reason that the two sides really have this kind of endless contradiction, Song Jingshan should know it, but Han Bin asked repeatedly, Song Jingshan said that he did not have enemies.

Han Bin picked up the cup to drink tea, but found that the tea in the cup had bottomed out.

Han Bin poured another cup of tea.

Han Bin still had a guess as to whether this was a blindfold of the murderer.

The murderer's target was Song Bochen, and he also became vengeful with Song Bochen. However, in order to divert the police's attention, he sent a threatening letter to Song Jingshan. The purpose was to let the police trace the situation around Song Jingshan, thereby ignoring the clues around Song Bochen.

If this is the case, it means that the murderer started planning three months ago, or even earlier...

At noon, Han Bin had a meal in the cafeteria and talked with Zeng Ping about the case during the meal. They were still tracking two licensed vehicles and had locked the approximate direction and location, but it would take a while to find the suspect vehicle.

After the meal, Han Bin took a lunch break as usual.

At two o'clock in the afternoon, I washed my face and refreshed.

There has been no progress in monitoring, and Han Bin is somewhat dissatisfied with their efficiency. In the afternoon, he is also ready to invest in verification and monitoring.

"Boom..." There was a knock on the door outside the office.

"Come in."

Ruben pushed the door and walked in and said with emotion, "Team Korea, every time I see you in the office, I feel like a dream."

Han Bin shook his head and laughed, "Anything to find?"

"No clue, I don't dare to go to your door." Ruben handed over a document. "We have checked the two envelopes. Only one person's fingerprint was found on the second threatening letter. Yes, Song Jingshan's fingerprints."

"Four fingerprints were found in the first threatening letter, one is Song Jingshan, one is Song Bohui, and there are two fingerprints. There is no comparison sample for the time being."

Han Bin touched his chin. He asked Song Jingshan before. According to Song Jingshan, when he found the first threatening letter, he found Song Bohui and his daughter Song Boxia. In other words, in addition to Song Jingshan, Song Bohui and Song Boxia read Through this threatening letter.

The fingerprints of Song Jingshan and Song Bohui were matched, and Song Jingshan's words were also confirmed from the side, but I don't know if Song Boxia's fingerprint is in the remaining two fingerprints.

Han Bin briefly told Lu Wen about the situation and asked him to go back and wait for the news. Han Bin must first determine whether Song Boxia’s fingerprints are in the two fingerprints. If so, it can be ruled out temporarily.

In this way, when comparing the database, it will reduce the workload by half, which is also considered for the sake of the technical team.

After Ruben left, Han Bin slapped his hands and said to everyone, "You should have heard what you said just now. The technical department found suspicious fingerprints on the first threatening letter, most likely it was left by the suspect. , As long as you find a suspicious person from the surveillance, you can compare the fingerprints. Everyone will work harder."

The crowd answered sparsely.

Han Bin ignored them and called Song Jingshan to tell his daughter Song Boxia to come to the Yuhua branch.

However, Song Boxia did not wait, but Han Bin waited for another guest.

"Tingling bell..." Han Bin's cell phone rang.

"Who?"

"Is it Captain Han?"

"It's me, who are you?"

"Will you investigate the threatening letter case?"

"Yes." Han Bin was a little puzzled.

"I want to respond to you in some situations."

"what's the situation?"

The person on the other side of the phone hesitated, "I...may I tell you in person, I can't tell you a word about this."

"Yes, where are you?"

"I'm at the gate of Yuhua branch."

Han Bin walked to the window and saw a man standing by the guard's room, "You come into the yard, I'll let someone pick you up."

"it is good."

Hanging up the phone, Han Bin greeted Zhao Ming and asked him to go downstairs to pick up the man who called.

After a while, Zhao Ming walked in with a middle-aged man, wearing a gray T-shirt, with his head down, looking a little cramped.

"Please sit down, what do you call?" Han Bin asked.

"My last name is Hong, and my name is Hong Jianying."

"I think you are familiar, have we met somewhere?"

"Yes, I work in the property of Rongding Garden Community."

"I remembered. I saw your photo on the property. You are responsible for cleaning the No. 6 building."

Tian Li handed a glass of water, Hong Jianying caught the glass with both hands, "Yes, you have a good memory."

The other party was the cleaner in Building 6, and probably had seen the person who delivered the threatening letter. Han Bin subconsciously asked, "Do you have any clues to throw the threatening letter to the suspect?"

"I..." Hong Jianying swallowed and took a deep breath, "That letter was... I wrote it!"