After returning to the police station that afternoon, it didn't take long for Feng Long to receive the on-site investigation report from the technical department and the forensic autopsy report.

According to the report, the deceased Liu Ming, aged 25 years old, 172 centimeters tall, weighed 54 kilograms, the body was intact, neatly dressed, and the cash and valuables in the house were all there, excluding burglary and murder.

Based on the deceased's messy house, clothes stacked on the bed, and a half-filled suitcase, it is speculated that the deceased may have been preparing to move, which can also be known from the landlord's transcripts.

The cause of death was an overdose of toxic substances, and a large amount of ethylene glycol and a small amount of sodium thiopental residues were found in the deceased's body, and it was speculated that the murderer first injected sodium thiopental to anesthetize the deceased, and then injected a large amount of ethylene glycol to kill the deceased after the deceased had no resistance.

Ethylene glycol, as the main ingredient of antifreeze, is not difficult to obtain, it can be found everywhere in the market, or the most direct online shopping can also be bought, if it is used to find the murderer, it is undoubtedly a needle in a haystack, so the feasibility is not high.

Residues of food oil and flavor were detected in the fingernails of the deceased, and according to the comparison, the ingredients were consistent with those in the food bag at the scene, which were left by the deceased before his death.

No needles and needles were found at the scene, and the murderer should have taken them away from the scene after using them.

Only a small number of footprints were found on the windowsill in the deceased's room, which were rubbing, and it was speculated that the murderer stepped on the windowsill and removed the camera, but it was too vague to detect valuable information, and other than that, the murderer left no traces at the scene.

The deceased's computer was checked several times to determine that there were no residual files, and it was handed over to the technical department to see if some of the files could be recovered.

Due to a heavy rainstorm last night, thunder and lightning caused some lines to be damaged, and the only two cameras in the community lost power, and the murderer was not filmed.

According to the elimination method, the time of death of the deceased was between 10 o'clock and 11 o'clock, He Xu each expanded outward for 2 hours, and checked the monitoring from 8 o'clock to 1 o'clock the next morning.

Vehicles coming and going between eight and nine and a half, after investigation ruled out that there was no problem, either residents of the surrounding community, or passing by, after half past nine began to rain, because the rain was too heavy to see the license plate number, so this clue was also invalid.

The only known clue is that the murderer in these two cases may be the same person, but there is no obvious point.

Feng Long closed the information in his hand and asked, "Did you see Qin Youyou this morning?" The result? ”

He Xu frowned, pondered for a while, and then replied: "Qin Youyou has an extreme personality, does not believe in the law, and has a strong hatred for Zhang Yang, and has sufficient motives to commit crimes. ”

Her answer was watertight, and she did not show her killing intent towards Zhang Yang between her words, but this just shows that she has a strong sense of anti-reconnaissance.

"And according to Li Yi's testimony, Liu Ming said before that the murderer was slender and may be a short-haired woman, which is consistent with Qin Youyou's external characteristics, plus Qin Youyou has lived in an urban village since he was a child, and he knows the northern suburbs well, so he is fully capable of avoiding all surveillance."

"Therefore, Qin Youyou is the most suspicious now."

"But we don't have enough evidence to prove that she's the murderer." The other party is too cautious, and the methods are so cruel that it doesn't look like a crime that a high school girl can commit at all.

At this point, the facts of the case have gradually become clear.

Assuming that Qin Youyou is the murderer, then, on June 3, Zhang Yang took Qin Youyou to his home, raped her, and then imprisoned Qin Youyou for five days until June 8, because of the school holiday, no one found Qin Youyou missing.

As for what happened during this time, no one knows, but it is enough to accumulate Qin Youyou's infinite hatred for Zhang Yang.

Based on hatred, sometime between June 23rd and June 25th, Qin Youyou used some excuse to trick Zhang Yang to a certain place, first anesthetized him with anesthetics, then killed him and divided his body, and then threw his body in batches.

Last night, that is, on June 27, Qin Youyou saw Liu Ming's post on the Internet, she didn't expect that the previous process of throwing the body would be filmed, and she was afraid of revealing her identity, so she immediately killed Liu Ming.

Feng Long closed his eyes and carefully recalled the two cases, if the judgment was correct, this was the general process of the entire case, but now there is a lack of key evidence.

Remembering that there had been no head yet, Feng Long was puzzled, "Where will the murderer divide and hide the corpse?" And, if she was the murderer, how did she dismember? ”

This is where the case is crucial and the strongest evidence, and if the body is found, it can be directly convicted.

But without evidence, even if the killer is known, there is no way to arrest her.

Ye Liu frowned and said, "Perhaps, we have always fallen into a misunderstanding, the person who dissects the corpse does not necessarily have to be from a medical background. ”

Da Zhuang said: "But how do ordinary people know how to divide the corpse from the joints and muscles of the corpse, from past experience, they will only use a shovel or axe to disassemble the corpse. ”

"That's the problem." Ye Liu said: "Generally, only men or women with a lot of strength will do that, and a delicate woman like Qin Youyou will only choose a more energy-saving method." ”

"If only we could find the murderer's hiding place." He Xu muttered: "The head of the deceased has not been found yet, and the murderer must have hidden it somewhere." ”

All of a sudden, it was at an impasse again.

Feng Long looked at Ye Liu, who was thinking seriously on the side, and asked, "Xiao Ye, if you were Qin Youyou, where would you choose to be the place to divide the corpse and hide the corpse?" ”

"It could be home." Ye Liu recalled the conversation in the morning, "Qin Youyou is very vigilant, she only believes in herself, this kind of person is generally very insecure, and she should not put her body too far away from her home and it will be easy to be exposed." ”

"Possibly." He Xu continued: "From the case to the present, Qin Youyou's main activity route is the distance from home to the store, and her hiding point should be on the road from the urban village to Jinhua North Road. ”

Feng Long frowned and said, "There is another possibility, the murderer is venting his hatred. ”

Seeing that no one was accosting him, Feng Long continued to explain: "The deceased's head has not yet appeared, maybe it is not because the murderer has no time to throw the corpse, but she hid the deceased's head, in a place where she can often go, abuse the corpse, vent the hatred in her heart, and achieve inner satisfaction." ”

Abuse of corpses, although it sounds inconceivable, is completely in line with the psychology of the perpetrator.

"If that's the case, then the safest place to go to often is her home." He Xu said that he couldn't wait to catch the murderer, "Team Feng, we applied to search her home." ”

Feng Long pondered for a while and decided: "From now on, closely monitor Qin Youyou's movements in real time, to ensure that she is always under the control of the police, I will apply for a search warrant, and early tomorrow morning, I will search her house first." ”

There is no way, the murderer is too cautious and cunning, so he can only search the most suspicious places first, and then investigate them one by one.