At around 10 p.m., a cordon was set up outside the apartment building No. 504, surrounded by people with good deeds.

"The deceased's name is Chen Lingling, Cai Aqi's live-in girlfriend, and the house is rented by Cai Aqi." Inside, Song Jingyan, a member of the criminal police team of the Municipal Public Security Bureau, was reporting the situation to the deputy captain Shi Tianlin, "The people in the economic investigation team are tracking down a large Internet fraud gang, Cai Aqi is one of the suspects, and he came to arrest people tonight, but found that the door was wide open, Chen Lingling died inside, and Cai Aqi did not know where to go." ”

Song Jingyan is a simple-looking and sturdy young man. Shi Tianlin is in his early thirties, of medium stature, and looks elegant, not like a policeman, but more like a scholar.

"There seems to be a lot of valuables, even the jewelry in the bedroom that is prominently placed. The cell phone was also left at the scene. Song Jingyan added, "Burglary homicide can be ruled out." ”

A young girl in a hazmat suit, wearing a mask, and carrying a toolbox hurried in.

"Xin Yi—" Song Jingyan called enthusiastically, and Shi Tianlin also greeted with a smile.

After Yan Xinyi responded, she quickly devoted herself to the autopsy. In the face of the corpse, she was fearless and calm.

Chen Lingling was lying flat on the ground, she was wearing a suspender nightdress, the skirt was neat, and her feet were closed.

"The fatal was a brain contusion, but no murder weapon or blood was found here." Yan Xinyi said after the inspection.

At this time, the on-site technical appraisal personnel reported that a blood reaction was detected on the edge of the wardrobe next to the bed, but no fingerprints were taken around. However, shoe prints were found on the ground, extending from the door to the bedside, judging from the shoe prints, it should be a man, and fingerprints were extracted from the door.

"The shoe prints were not left by the murderer, and the area around the closet was so clean, there is no reason why the shoe prints and the fingerprints on the door should not be wiped off together." Yan Xinyi immediately expressed his opinion.

Song Jingyan was a little surprised, "You mean, after Chen Lingling was killed, there were other people who entered the house?" ”

"Yes." Yan Xinyi was sure, "After he found out that the person was dead, he left quickly." ”

Song Jingyan looked at Shi Tianlin.

"Team Stone, what do you think? I think ......" He scratched his head, obviously not quite agreeing with Yan Xinyi's opinion, but it was not easy to refute it in front of her.

"It's hard to jump to conclusions just yet." Shi Tianlin did not express his opinion, "Go back first, and then discuss it at the meeting." ”

The criminal police team held a seminar on the case overnight, which was presided over by team leader Lu Ruigang, and also attended by members of the economic investigation team and the network monitoring team.

Yan Xinyi first reported the autopsy results, and the time of death was between 8:30 and 9:30 in the evening.

"The deceased is supposed to have hit the edge of the wardrobe with the back of his head, causing the death. From this it can be seen that this is not a planned crime. "From the neat skirts of the corpses and the closed feet, you can feel the care and respect of the prisoners for the corpses, and it is likely that they regret their impulses." The prisoners carefully wiped off the blood and fingerprints, and the floor was polished so that not a single hair remained. There is a high probability of being a woman, and it is the style of a housewife who is used to doing housework. ”

"Women committing crimes? Housewife? There was a slight uproar.

Yan Xinyi graduated from the National Criminal Police Academy, with a double master's degree in forensic science and criminal psychology, during her graduation internship, she participated in the detection of two difficult cases through the combination of forensic science and criminal psychology, and just graduated this year by the Guancheng Public Security Bureau as a talent. However, for the first introduced technology of criminal psychological profiling, the general recognition within the Public Security Bureau is not high.

Lu Rui just heard Yan Xinyi's statement, and immediately frowned dissatisfiedly, "If you say so, other evidence is useless?" ”

Lu Ruigang is not confused, tall, with short hair, a strong figure, and a righteous spirit between his eyebrows, he is a standard "type man", "The portrait of criminal psychology is only suitable for auxiliary investigations, and it is for difficult cases." In our case, judging from the current situation, the evidence is very clear, and you only need to be responsible for providing the autopsy report. ”

Yan Xinyi wanted to refute, but was interrupted by Lu Ruigang: "What is the result of trace identification?" ”

According to the size of the shoe prints left at the scene, the length of the mold, the distribution of pressure and the longitudinal trajectory of the footprints, he judged that the person was between 1.75 meters and 1.82 meters tall and about 30 years old.