There was suddenly a gray envelope on the door of Su Juanxiao's house, first of all, this envelope could not have been conjured out of thin air, someone had to put it on the door.

So who put this envelope on the door? When was it placed on the door? That's what they're trying to solve.

Tang Xin pushed open the door of the stairwell, it was cleaned very clean, and the voice-activated lights were also very sensitive, so he couldn't tell if someone had come up from here to avoid the surveillance.

If someone wants to split/open the monitor, then he can only choose the stairwell.

Or there are two other possibilities, in fact, that person has a hidden identity that does not need to avoid surveillance, and will not be suspected by others at all.

Speaking of which, the delivery brother who comes to deliver fresh milk every day is indeed suspicious. If he took the opportunity to deliver fresh milk and inserted the envelope on Su Xuanxiao's door, no one would pay attention to him.

Of course, there is one last possibility, no one bothered to think about how to avoid the monitoring and send the envelope up, if Su Xiao/Sister herself has such a letter, pretending that she picked it up at the door, it is logical.

Tang Xin's phone/phone was connected, and the phone/phone bell/ring rang a few times before the other party picked it up.

Tang Xin first introduced who he was, and the call/phone was obviously startled, and he didn't understand why the police detective suddenly called him.

Tang Xin asked if he had seen a gray envelope on the door of Su Xiao/Sister when he was distributing fresh milk this morning.

The delivery guy was just confused for a few seconds, and quickly said with certainty: "I see, there is one." It's on the door of the sixth floor of Building 3, isn't it? ”

"Are you sure?" Tang Xin said.

The delivery guy was very sure, and said: "At that time, I went upstairs to deliver milk, and the envelope was placed on top of the milk crate, and as soon as I opened the box with the key, the envelope fell to the ground......"

The little brother said that he didn't notice that there was something on the milk crate at the time, and something fell down, which turned out to be an envelope.

The little brother picked up the envelope and found that there was no recipient, just something like a postmark in the corner. Although he was a little curious, he didn't look at it much, because he still had a few households with fresh milk that had not been delivered at that time, and it was about to arrive.

The delivery brother inserted the envelope that was originally placed on the box on Su Juanxiao's door, and then put away the fresh milk and left.

Because there is such a small episode, the delivery brother still has an impression, and he quickly remembered it when he mentioned it.

But the delivery brother was also a little surprised, could it be that the family's letter was lost/? But that doesn't make it easy to get the detectives over, right?

Tang Xin asked the delivery brother about the time when he came here, and the delivery brother also answered accurately.

The delivery brother said that they are now giving real-time feedback on the progress of the work, and when a bottle of milk is delivered, a bottle will be confirmed with the mobile phone/machine software, a bit like the express delivery can be queried in real time, so as not to cause problems such as customers saying that they have not received it.

So the time he recorded on his hand/machine to Su Juanxiao's door was 5:48 in the morning, and at that time, the gray envelope had already been stored.

Tang Xin thanked him, then hung up the phone and walked back to Su Xuanxiao's house.

Xie Jibai had already come down from upstairs, and he and Chen Wanting were asking some details about this morning.

When Xie Jibai saw Tang Xin coming in, he stood up and walked over and asked, "How is it?" ”

Tang Xin said: "I called the delivery person who delivered the fresh milk, and the delivery person said that at 5:48 in the morning, he saw this gray envelope. ”

For the safety of Su Juan Xiao and Liang Zhi, Chen Wanting decided to send people here in shifts to guard them in the past few days to avoid any accidents.

Xie Jibai and Tang Xin also agreed to this method, and now they have not determined the target of the murderer suspect, so it has something to do with this incident/incident, there is no alibi, and there is a person suspected of killing/killing, it is very likely that the murderer. In this way, Liang Zhi is also suspicious.

It is indeed a good way to send people to protect the safety of Su Juan Xiao and Liang Zhi, and to follow / track Liang Zhi's movements.

Chen Wanting stayed first, and asked Xie Jibai and Tang Xin to go back with the gray envelope.

When Xie Jibai and Tang Xin returned to the police station, Liu Zhihui and Qin Xu had also returned.

Everyone heard something new, so they asked about the situation as soon as they returned.

The gray envelope was taken to the Technical Investigation Bureau for analysis, and the results came out quickly. The pen and paper are very ordinary, and there is no place to see the clues, and the strange thing is that the notes are not from the man in the gray trench coat, which is different from the previous notes.

This surprised everyone.

Chen Yancai said: "In other words, is there a possibility, in fact, the gray trench coat man is just a group/organization, and they just wear the same clothes to commit crimes, so it is normal for the notes to be different?" ”

"It's possible." Xie Jibai said: "But the notes have not changed so many times, and the sudden change is enough to show that it is very strange." ”

"That's right." Chen Yancai said.

Tang Xin said: "In addition, the fingerprints of two people were found on the envelope, one is the fingerprints of Su Xiao/Sister, and the other should belong to a tall man, who should be the delivery man who delivered fresh milk." ”

Before Su Juanxiao took the envelope into the house, the envelope was touched by the delivery man, and he took the envelope and inserted it on the door, so it was indeed normal to leave fingerprints.

Other than that, there are no other people's fingerprints.

When Chen Wanting and Xie Jibai touched the evidence, they were both wearing gloves, so they didn't leave fingerprints.

As for Liang Zhi, she was very scared at the time, she didn't touch the letter at all, she just glanced at Su Juanxiao hurriedly a few times, and then she was so frightened that she couldn't give up.

The letter didn't give them much of a clue. Because Chen Wanting was not there, Xie Jibai arranged a division of labor, and they needed someone to accompany Su Xuanxiao and Liang Zhi at night.

Su Xuanxiao and Liang Zhi are both girls, and it is not suitable for them to send men over at night, so Chen Yancai must go over to guard tonight.

When Chen Yancai heard this, she patted her chest and said, "Don't worry, I am guaranteeing that nothing goes wrong." ”

"Didn't you have a date today?" Qin Xu suddenly spoke.

"What date?" Chen Yancai asked strangely.

Liu Zhihui suddenly realized and said, "Sister Chen, didn't you make an appointment with Team Ai in the morning and have dinner and watch a movie together in the evening?" ”

"What the hell, it's just that he lost the bet, so he wants to invite me to dinner, not on a date." Chen Yancai immediately shouted.

Appointment? When Xie Jibai heard this, he said, "Chen Yancai has something to do today, or can we ask colleagues from other groups for a favor?" ”

"It's all right!" Chen Yancai said.

Chen Yancai insisted that it was okay, and then ran out, went to the next door to call Team Ai, and told him that he couldn't go to dinner today, and that he would talk about it another day.

As soon as Team Ai heard this, he brought his suit to work, and he was about to change it when he went on a date after work, but he couldn't get up, which was a pity.

However, Team Ai quickly cheered up and said, "I'll go with you, if you guard alone, everyone will definitely not be at ease." ”

Free labor, Chen Yancai did not refuse, and went back to their office after speaking.

As soon as Team Ai turned around, he saw that everyone in the office was staring at this side with their ears pricked up.

Team Ai coughed in embarrassment.

Someone coaxed and said, "Boss, you're lucky today!" Being able to keep vigil with my sister-in-law/son is simply a lonely man and a widow, and maybe I can squeeze a sofa. ”

When Team Ai was said this, there was a sudden expression of realization on his face, but he quickly said: "What a lonely man and widow, we are going to work, to protect the safety of the two girls." ”

As soon as he said this, a few people next to him laughed and said, "The boss is not shallow, there are so many at once." ”

", you're all idle, aren't you?" Team Ai said.

After teaching them a lesson, Team Ai imagined the scene of sending a sofa with Chen Yancai, but it didn't feel realistic, even if there was a sofa to sleep on, it must be sleeping on the ground by herself, and Chen Yancai sleeping on the sofa......

Because I got off work too late yesterday, everyone was ready to disperse after almost one o'clock today. Chen Yancai and Team Ai ran to replace Chen Wanting, and the others went home to catch up on sleep, and early tomorrow morning, Liu Zhihui and Qin Xu took over, and then Xie Jibai and Tang Xin.

Xie Jibai barely slept for two hours yesterday, he was white, and the dark blue under his eyes was particularly obvious.

Tang Xin and Xie Jibai went home together, they both felt very tired, and they just made a simple snack for dinner, and after eating their stomachs, Xie Jibai began to feel sleepy.

Tang Xin came out of the kitchen after washing the dishes, and found that the bath/room door was closed, Xie Jibai must be taking a bath, and the sound of running water could be heard through the door.

Tang Xin sat on the sofa, raised his head and rubbed his eyebrows, thinking about relaxing a little, and when Xie Jibai finished washing, he would go to take a shower and go to sleep.

But this time, Tang Xin waited until he fell asleep, almost an hour, there was no movement in the bath/room, and the "bang-la-la" water flow continued silently.

Tang Xin woke up and looked at the time, and immediately felt that something was wrong. He walked to the door of the bath/room and almost slipped on his heel, the water inside never stopped, and it actually flowed through the crack in the door.

Tang Xin's face suddenly became very stern, and he knocked on the door several times with / force, shouting: "Xiaobai? What's wrong with you, Xiaobai? ”

There was no response inside, Tang Xin's heart suddenly lifted, and he grabbed the doorknob and twisted it a few times.

Fortunately, Xie Jibai has not had time to contact / contact someone to change the door of the bath/room, and the door lock of the bath/room door is a little problematic, and it has not been replaced. Tang Xinxin/Li hit it twice, and then he heard a "click", and the door lock popped open.

As soon as the door opened, there was water everywhere inside, Xie Jibai was lying naked/naked/naked/lying in the bathtub, his face was abnormally red, his eyes were closed, and it didn't look like he was asleep, but like he had fainted.