"Anesthetic?"

"Yes, have you forgotten, the forensic doctor found the residual ether^ether component in the body of the victim of the factory cremation case, which is a controlled chemical and cannot be obtained by ordinary people."

"How could I forget such an important clue, the task force has been investigating along this line. Why did you suddenly mention this? ”

"Because Jiang Peiyao probably made an appointment with a doctor before she disappeared. If the suspect is a doctor, there may be a way to get anesthetic drugs. Gu Song explained.

"Who are you listening to about this?"

"Wang Xiaoli. On the afternoon of October 15, when he went to Jiang Peiyao's house to ask for money, Jiang Peiyao said it to him personally. ”

"Is this information reliable?"

"I think it's more reliable. In this way, isn't there one more thing in common between the two cases? ”

"Okay, I see. I'll send someone to investigate Jiang Peiyao and Ji Lan's social connections now, and see if there is such a suspicious doctor around them. ”

"I've got a list here that you might need, I'll email you later."

"Okay, that's it for now." Xia Shi hung up the phone and found that Huo Yan was looking at him with a puzzled expression, and immediately explained: "Gu Song has found the basis for the merger, maybe our speculation is correct." ”

After checking Ji Lan's residence, the three of them walked around the neighborhood by the way. More than a month has passed since Ji Lan was killed, and the surveillance video inside the community has long been overwritten. The monitoring facilities around the community have not yet been perfected, and it is not easy to find out Ji Lan's whereabouts.

Although the police are trying their best to find the witnesses who saw Ji Lan on October 17, because too much time has passed and the place is sparsely populated, Xia Shi does not have much hope for this at all.

When passing by the riverside park near the community, Xia Jinyu, who had been silent, suddenly asked: "Brother, do you suspect that Senior Sister Ji Lan was killed by an acquaintance, is it speculated based on the murderer's modus operandi?" ”

"Why are you asking this?" Xia Shi had never talked to Xia Jinyu about the details of the case, and bringing him over today was only a special case. "Didn't I tell you, you as a student, don't worry about solving these cases, just follow along and take a look."

"But strangers may burn corpses if they commit crimes." Xia Jinyu was not reconciled, and continued to say to Xia Shi, "The murderer took great pains to dispose of the corpse, throw the corpse and burn it, one of the purposes was to hide the identity of the victim, and the other purpose was to delay time. Even if it is not an acquaintance who committed the crime, it is beneficial for the murderer that the body is found one day later, and the source of the body is found one day later. ”

"Of course there is such a possibility, aren't we investigating now?" Xia Shi continued to walk forward as he spoke, but Xia Jinyu suddenly walked quickly in front of him, blocked his way, looked at him seriously and said, "Brother, I don't think you should waste time, I think the murderer of Senior Sister Ji Lan lives near here." He should be over 30 years old, thoughtful, level-headed, highly educated, and engaged in medicine and chemical related work. He doesn't know Senior Sister Ji Lan, so you can't find anything out of her interpersonal relationships. Moreover, this is definitely not the only time the murderer has committed a crime. ”

"It's okay, Jin Yu, to make a criminal profile so quickly." Xia Shi turned his head and glanced at Huo Yan, and said half-jokingly, "You're getting an axe in front of experts." ”

"Teacher Huo." Xia Jinyu ignored her brother's ridicule and eagerly asked Huo Yan's opinion, "How much do you think I'm right?" ”

"As for the basic information about the murderer, I expect to be similar to yours in my heart. It's just ......" Huo Yan paused, looked around, and said slowly, "How can you be sure that the murderer lives around here?" If you want to say that Ji Lan is in retreat and studying, and goes out every day just to pick up couriers, buy food, and buy daily necessities, it stands to reason that he should have been killed near his home. But it's not absolute, it's also possible that she occasionally goes out and then encounters a murderer, isn't it? ”

"Of course I don't jump to conclusions, I say that because I think of something that you haven't noticed."

"What's the matter?" Xia Shi asked curiously.

"Sister Jilan loves to run, and I've met her a few times in the school stadium before. I just sent a message to confirm with Senior Sister Liu Tong that Senior Sister Ji Lan does like to run at night, which is a way for her to relieve the pressure of studying. Xia Jinyu said and pointed to the riverside greenway not far away, "Look at this park, there are few people, the roads are spacious, the air is fresh, and it is very suitable for running, maybe Senior Sister Ji Lan was caught by the murderer when she was running at night nearby." ”

"Well, maybe that's a possibility." Huo Yan said noncommittally, "But this is just your guess, and there is no basis for it." ”

"I have!" Xia Jinyu turned around, faced Xia Shi and Huo Yan again, and said confidently, "I carefully checked Senior Sister Ji Lan's review notes, and found that the order of the subjects she reviews every day is the same, and the length of the notes is about the same. On October 17th, her revision notes were nearing completion, indicating that she should have left home in the evening.

"When I met Jilan in the school stadium before, I saw her wearing a pair of black and white Nike sneakers. I didn't find the shoes at Senior Sister Jilan's house just now, and I also asked Liu Tong to confirm that the shoes were not in their bedroom. Senior Sister Ji Lan is not tall, she usually likes to wear shoes with heels, and only wears sneakers when she is running. So I think it's very likely that Senior Sister Ji Lan encountered a murderer during a night run. The houses in this area are all newly built, the occupancy rate is very low, and it is not very lively during the day, and it is even less accessible at night. If they didn't live nearby, who would come here at night? ”

"Well, you have a point." After listening to Xia Jinyu's explanation, Xia Shi had to admire his observation ability. Regarding this case, Xia Shi did not disclose any information to Xia Jinyu, and the other party made an inference completely based on the clues he collected, which is quite rare.

"Since it makes sense...... Xia Jinyu asked expectantly, "will you adopt my opinion?" ”

"I'll refer to it." Xia Shi smiled and patted Xia Jinyu's shoulder.

"Just a reference?" Xia Jinyu frowned, looking a little dissatisfied.

"And what else do you want?"

"Teacher Huo?" Xia Jinyu cast a pleading gaze to Huo Yan, hoping that the teacher would approve of his idea.

Huo Yan just smiled and deliberately changed the topic: "Jin Yu, you performed very well today, and I will give you full marks for this extracurricular internship." ”