Song Xichen sighed and said, "Zhang Baowen, you can tell me about your investigation. ”

Zhang Baowen said: "We have investigated all the residents in the vicinity, and there are no eyewitnesses. The victim hardly interacts with his neighbors, and he hardly sees anyone else coming here to look for him, and he usually does not go out during the day, nor cooks, but orders takeout when he is hungry. He always goes out at ten o'clock in the evening, and comes home at five or six o'clock in the morning, and some aunts who get up early to dance square dance say that they often see him walking home from outside at five or six o'clock. So the neighbors guessed that he must have done something dishonorable.

The people in that area all said that he was very rude, and he didn't greet his neighbors when he saw them, and when others greeted him, he didn't say a word, and went by himself. ”

Sun Yuke said: "According to the captain's wishes, I took all-round photos and recorded videos of the room where he lived. His room was basic, with no pots and pans, only a bed, not even a table, and some simple toiletries. It doesn't feel like home, like a small hotel for temporary staying. ”

Song Xichen asked, "What about electronic devices?" ”

Sun Yuke replied: "There is nothing, not even an old TV or an old computer." There was only one mobile phone charger on the bedside board, but I couldn't find my phone at home, so I found a ticket for buying medicine from a pharmacy in the trash can, and I picked it up. ”

Meng Xiaofei said: "Captain, we led people to turn over the grass in the nearby alley, including the garbage cans, and found no mobile phone or wallet or other belongings of the victim, nothing. ”

Liu Yiqiang said: "We checked the nearby surveillance, because the community over there is relatively old and belongs to the shantytown, so there are monitoring, or there are few that can be used, we have found him in the monitoring of several shops nearby, but it is not the traces of yesterday's action, it is the afternoon before yesterday I went to the pharmacy, and then I never went out." We didn't find any particularly suspicious people, but at five o'clock today, we found a person in a jacket who appeared in the video, this person often goes to Hulu Lane during this time, but we asked some nearby residents and said they didn't know this person. ”

Liu Yiqiang said as he put the video clip of the man on the big screen.

Song Xichen glanced at it and said, "He's not a suspect." ”

Because the person in the video on the big screen is the Maori Shen detective he just visited, and he also took the information of a cowhide document bag from someone.

Zhang Baowen said at this time: "Captain, is this case difficult to investigate? Don't you feel like there's any clue? ”

Song Xichen said: "Yes, how can there be no clues." This victim has a criminal record, you know? Do you know why he left the case?

What was Yan Haoshou arrested for in that case? And not long after he was arrested, why was he released again so soon? ”

At this time, everyone was even more surprised, almost a little dumbfounded by Song Xichen's supernatural powers, how did the captain know that this Yan Haoshou had a criminal record? Why didn't everyone think about it?

Song Xichen then said sharply: "Since we can't find his mobile phone, is it possible that his mobile phone was taken away by the murderer?" If you have a mobile phone, I also believe that many problems may be solved easily. But now that we don't have a mobile phone, we really can't do anything? Can we find his mobile phone number based on his identity information, and whether we can find the people who are close to him with Yan Haoshou's mobile phone number provided by his parents, and what software he uses to do anything? ”

Everyone can't help but shout in their hearts that the head is really powerful, every time he can quickly find a new breakthrough, he is like a lion who never admits defeat, always so scrappy.

Song Xichen thought of what Mao Lishen said, Yan Haoshou might be engaged in the sale of some kind of illegal drugs. If this is confirmed, then they are probably one step closer to the truth. And in line with Han Yijing's psychological judgment of the people at the scene, the victim may be trading with the murderer or something unspeakable, and it is estimated that the process of the matter will be very short, because the victim is wearing pajamas and slippers.

He said again: "Sun Yuke, you take the invoice for buying medicine and go to the pharmacy to verify it." Then I asked the medicine seller if he often bought medicine there? These drugs are usually used to treat any disease. ”

Song Xichen assigned the task to his subordinates again, he took a picture of the invoice for buying medicine, and then he came to the forensic department.

Sure enough, Lao Jia was still there with Yan Haoshou's corpse, and from time to time he seemed to be still communicating with the corpse in depth.

Song Xichen patted Lao Jia's shoulder and said, "Lao Jia, help me look at something." ”

He opened his mobile phone and flipped to the drug purchase invoice he had just taken, and then handed it to Lao Jia.

Lao Jia glanced at it and said, "Whose medicine are you?" The one who is lying? ”

Song Xichen nodded.

Lao Jia pondered and said: "No, two of these drugs are for the treatment of insomnia, and the other two are pain-relieving drugs, but eating them in large quantities has the effect of anesthesia, and in severe cases, it may even cause hallucinations." ”

Song Xichen suddenly felt that something was wrong, even if Yan Haoshou could indeed stun women by buying these medicines, other people could also go to the pharmacy to buy them. Why buy from him at a high price? This is obviously illogical.

He thought he was about to make a great discovery, but now he was covered with a thick fog that he couldn't see clearly.

What's going on?

This buying medicine must be an important piece of the puzzle in this case, but where should it be placed? What role did it play in this case?

At this time, Liu Yiqiang called and said: "Boss, I have found out, I am now in the Technical Investigation Department." ”

Song Xichen said, "I'll be there soon, you wait." ”

Song Xichen came to the Technical Investigation Department and saw Liu Yiqiang sitting in front of a computer, his fingers flying up and down the keyboard, and he sighed that it was not a loss that the director dug directly from the university to the city police station. Because the network is so developed now, the preciousness of network technology is more vividly reflected. The control of network information has increasingly become the key to solving crimes.

Liu Yiqiang beckoned the captain to sit on the chair next to him and said: "I found his mobile phone number under his identity information through the operator, and indeed this mobile phone number is generally turned on 24 hours a day, but it was turned off at 2:26 this morning." And through the operator, I also found a few people who often talked to him, and I also made a list. ”

Song Xichen gave Liu Yiqiang a thumbs up and praised: "Young man, you did a good job." ”

Liu Yiqiang said: "Captain, don't be in a hurry to praise, I haven't finished my words yet." This mobile phone number is not the mobile phone number of his son left to us by the victim's father. And the identity information of the person in charge of the number left by his father is false, and there is no such person on the national information network at all, or this person died three years ago. And this mobile phone number is also displayed in the boot, and it is displayed through the operator's positioning information, which is in the area where Yan Hao is guarding his home. ”

Song Xichen continued to give a thumbs up and gave Liu Yiqiang an order to continue digging deep into these two mobile phone numbers.