On June 22, 2017, an arson fire occurred in a community, killing four people, including three children. Nanny Mo is well recognized by her employer, with a salary of nearly 10,000 yuan per month, her own independent rest room and bathroom, and a luxury car for her to drive casually. She used her hometown to build a house, and her employer generously gave more than 100,000 yuan. But she repeatedly stole jewelry and used it for gambling. When all this was discovered by the employer, they did not call the police, but chose to terminate the contract. It was the last shred of decency left to her by her kind employer. However, her greed and malice failed their kindness, and a single fire turned four living lives to ashes.

On October 20, 2018, a 91-year-old woman died in her bed, covered in blood. The criminal suspect Xu Moumao recommended himself to be a nanny and take care of the elderly. But during the more than ten days of taking care of the elderly, Xu felt that the relationship with his employer was not harmonious, and he was not suitable for taking care of the elderly's daily life. However, the resignation was not negotiated with the employer, and the idea of killing people was born. In the end, Xu used a fruit knife to end the old man's life.

On May 2, 2020, a homicide occurred in Bridge Town, where an 83-year-old woman was suffocated to death by a nanny at home. The nanny covered the old man's mouth and nose with a towel, sat on the old man's chest, and suffocated him to death.

There are endless cases of nanny homicide like this, and there are even nannies who poisoned ten elderly people in half a year, because of the unspoken rules of the housekeeping industry: during the period of taking care of the elderly, if the elderly die, they will be paid according to the salary of the whole month.

Although this is a homicide case, there is a nanny who first discovered the scene of the crime, and judging from the current situation, this nanny named Xin Shuhui is suspected of committing a major crime.

"Lao Qin, I found out the identity information of the deceased."

I was thinking about it when Li Meng walked quickly to my side.

I was stunned for a moment, and subconsciously asked, "What do you call me?" ”

"Old Qin!" Li Meng looked at me in a daze and handed me a tablet with the identity information of the deceased.

"Oh, I'll see." I was stunned for a moment, then took the tablet and carefully reviewed the information on it.

There are three deceased people in this case, and they are a family of three.

Shen Guanghe, male, 33 years old, owner of Yachun Gold Store in Ningzhou City.

Fang Hemei, female, 28 years old, cashier of Yachun Gold Store in Ningzhou City.

Shen Ziping, male, three years old.

"Three-year-old children don't let go, what a feud this must be......" I took a deep breath after reading the identity information of the three deceased.

Li Meng looked at the corpse in the living room, pursed his lips, was a little distracted for a while, and subconsciously muttered: "The murderer will be punished." ”

I handed the tablet in my hand to Li Meng, looked at him, and said seriously: "We are the murderer's retribution, he can't escape." ”

This is a building-within-a-building structure, with two floors of three bedrooms and one living room, and there are many places that need to be inspected on site. And the nanny Xin Shuhui said that the employer took him away tonight, saying that there were guests who wanted to come to discuss business, and it was not clear how many people came, and the trace inspection work was very important.

Not only the trace work, but also the autopsy work is very important.

Ren Qiushi and Zeng Lan are conducting autopsies, and judging by the corpse morture and body temperature, the time of death will not exceed two hours.

I walked up to Ren Qiushi and said in a deep voice: "The nanny left at seven o'clock and came back at half past ten, and it was during this time that the deceased was killed." ”

After listening to my words, Ren Qiushi nodded and said lightly: "That's true." ”

As soon as Ren Qiushi's voice fell, he suddenly asked me: "Did you find the tools of the crime at the scene?" ”

"Tools for committing crimes?" I frowned suddenly, and subconsciously asked.

"Yes, the deceased was stabbed in the heart with a sharp object and died of excessive blood loss. Judging from the wound, the tool of the crime is a dagger, a very common single-edged dagger, which should be something like a fruit knife. Ren Qiushi said seriously.

"It's a fruit knife again...... Fruit knives are really a very common killing weapon. I settled down and asked Jiang Tingbai beside me.

"Did you find the murder weapon?"

"Not yet, the technical team is still investigating the scene on the first floor, and I haven't found it for the time being, so I'll go to the second floor to have a look." Jiang Tingbai said seriously.

A police officer from the technical team walked up to the coffee table, holding a professional criminal investigation camera in his hand, and pressed the shutter on the ground.

It was a broken glass and a puddle of clear liquid.

The technical team officers took a sample of the liquid on the ground, put it in the evidence bag, and after drawing the fixation of the traces at the scene, they placed a physical evidence identification plate with "43" written on it next to it.

This is only the first floor, and 43 valuable traces and clues have been found, and the difficulty of this case investigation can be imagined.

I turned around and looked around the house, leaving an intuitive impression in my mind.

This kind of sight that I have seen in person is often more impressive than the black and white words on the trace inspection report.

I turned and walked into the kitchen, a rectangular table full of leftovers, and it looked like they had just had a big dinner.

The technical team is also sampling the various dishes on the table, judging from the dishes and chopsticks on the table, there are a total of five sets of tableware, if you don't count the nanny and the three-year-old child, then there should be three guests tonight.

The technical team also carried out biological sample extraction on the tableware, trying to extract the saliva DNA on the tableware, which is of great significance and value to our follow-up case detection work.

"Lao Qin, the technical team extracted a large number of biological samples such as fingerprints, footprints, and hair in the room. Fingerprints and footprints are mainly concentrated around the sofa in the living room, and a large number of traces also appear in the dining room. Jiang Tingbai walked up to me and looked at the environment in the room, with a trace of melancholy on his face.

This is a very large on-site investigation work, and it is also a very difficult trace inspection work, it seems that Jiang Tingbai is going to disappear again, oh no, he will be busy in the trace examination department for a few more days.

"Anything else to discover?" I looked at him and asked seriously.

"There are obvious signs of a fight in the living room, and many items are damaged and displaced. But there was no trace of rummaging in the room, it was supposed to be a murder of passion. Jiang Tingbai said seriously.

"The nanny said that someone came to talk to the deceased about business tonight, could it be that the business has collapsed? Quarrel and then kill? Li Meng suddenly muttered.

"It was an acquaintance who committed a crime, and they had dinner together. If it is a murder of passion, then it should be a quarrel after drinking. Xue Hang, who was cooperating with the technical team to do on-site investigation, picked up two empty liquor bottles and said in a deep voice: "They didn't drink less." ”