"The blood on this garment is indeed human blood, and it ...... It was the blood of two people, and after DNA comparison, we determined the identity of one of them, this person is named Qiao Fei, a 26-year-old woman, she has been missing for more than half a month, and has not been found. ”

The forensic doctor handed the forensic report to Officer Hao.

Officer Hao's eyes sank, and he immediately realized that something was wrong, it seems that this missing girl is more than lucky!

After receiving the appraisal report, Officer Hao briefly flipped through it, and then looked up at the forensic doctor: "The identity of the other person cannot be determined?" Isn't there such a person in the DNA bank? ”

"It's true that there is no such person in the DNA bank, and this is normal, because not everyone's DNA information needs to be collected and put into the bank."

The medical examiner replied.

Lifting his glasses, the forensic doctor continued: "However, what is certain is that this person is a man, judging by the status of red blood cells, this man is between 20 and 35 years old, and he should be a thin man, because he has a low concentration of blood lipids in his blood. ”

"Isn't the blood of these two people mixed? The blood lipid concentration should also be the average concentration of the two of them, how can you judge the blood lipid concentration of one of them? Moreover, they don't know whether they are mixed with other liquids in their blood, and if they are mixed with other liquids, the blood lipid concentration will not be accurate, right? ”

Officer Hao asked rhetorically.

"You don't have to worry about this, I've been doing forensic medicine for decades, and the situation you said has been encountered more than once, we will consider comprehensive factors, measure an estimated interval, and then make a comprehensive judgment based on the maximum and minimum values of the estimated interval, and the results will generally not be wrong."

The forensic doctor smiled confidently, lifted his glasses, and continued: "You just said that you didn't know if the blood was mixed with other liquids, and I will tell you clearly now that the blood is indeed mixed with other liquids. ”

"What's in it?"

Officer Hao asked curiously.

"Sodium citrate,"

The medical examiner replied casually.

"Lift a circle for what?"

Officer Hao frowned, his face blinded.

"Sodium citrate, a blood anticoagulant."

The medical examiner repeated.

Officer Hao nodded and said thoughtfully: "It turned out to be a blood clotting agent, I said that the blood dripped on the ground, how could it coagulate so slowly!" ”

He remembered that a week ago, the blood stains like plum blossoms that had fallen to the ground were quiet and vivid, and they did not freeze for a long time.

As for the few drops of blood on the roof of the building, they must have been sucked up by the dust and dried and coagulated.

"Let's do it first, I haven't eaten yet, and I'll talk about it when I finish eating."

The medical examiner touched his stomach.

Officer Hao smiled: "I haven't eaten yet, or let's go out to the next restaurant, I'll have a treat." ”

"Forget it, I'll just eat something in the cafeteria, and I'll be busy in the afternoon."

The medical examiner declined Officer Hao's invitation.

He knew that Officer Hao was a rich second generation, and a meal was nothing to him, but he was used to not taking other people's things, not eating other people's food, and not owing favors.

"Didn't you say you had less to live today?"

Officer Hao asked rhetorically.

"I plan to finish my work early today and go home to take my youngest son to swim."

At this point, the forensic doctor had a happy smile on his face.

Officer Hao nodded and raised the appraisal report in his hand: "Okay, then I won't force it, in short, thank you!" ”

"Yes, the duty is. Hehe~"

The medical examiner replied simply.

…………

Coming to the office, Officer Hao threw the appraisal report on the desk of the black boy: "Take a look." ”

"What's that?"

Blackboy looked puzzled.

"Just look at it."

Officer Hao sat down in his chair, picked up the water cup and took a sip of water, then picked up the bread on the table and took a bite.

Black boy opened the identification report and took a closer look: "Qiao Fei, missing person, blood sample comparison, DNA comparison,"

Hei Zai muttered a few words, and then suddenly turned his head to look at Officer Hao: "This Qiao Fei was killed?" ”

"Can't be sure yet, just found some of her blood."

Officer Hao said as he chewed bread.

"Where did you find it?"

Black Box wondered.

Officer Hao raised his finger and pointed upward: "Heaven." ”

"Heavenly?"

There was more confusion on Blackboy's face.

"That's right, this morning, a man came to the police station with a shirt with blood stains, saying that he had suffered a blood rain, and hoped that the police would help him identify whether the blood on his clothes was human blood, and this check was really human blood."

Officer Hao took another bite of bread.

"You just believe him? Rain of blood in the sky? Do you believe such nonsense? Nine times out of ten, the person who reported the crime lied, and there was probably something wrong with him. ”

Blackboy guessed.

"Actually, a week ago, I also experienced a blood rain, otherwise, I wouldn't have believed that person's words."

Officer Hao said with a serious face.

"You've experienced blood rain too? Why haven't I heard you say that? ”

Black Box wondered.

"I didn't pay much attention to it at the time, I thought it was bird blood, but now it seems that nine times out of ten it is also human blood."

Officer Hao said regretfully.

"It can't be this Joffe's blood, right?"

Black Boy glanced at the appraisal report.

Officer Hao shook his head: "I don't know, I haven't tested it, and it's too late to test now, because the blood rain sample from a week ago is long gone." ”

"No, no, since there is a clue about Qiao Fei, then we have to investigate it carefully."

Black Box closed the appraisal report and said thoughtfully.

"Of course, besides Qiao Fei, there is another person who needs to be investigated."

"Who?"

"If you look at the last page of the identification report, there are actually two people's blood in the blood rain, one of them is Qiao Fei, and the other is unknown for the time being, because there is no such person in the DNA bank."

After Officer Hao finished speaking, he took a big sip of water.

Hei Zai reopened the appraisal report, turned to the last page, and took a closer look: "This is interesting, the blood of two people actually fell from the sky like rain!" ”

"Have you finished reading?"

Officer Hao threw away the bread bag and asked casually.

Black Box slowly closed the appraisal report: "I've finished reading it." ”

"Okay, let's go, go to Qiao Fei's house to investigate."

Officer Hao patted Black on the shoulder, then stood up with a thud and walked towards the office door.

Black Boy picked up the appraisal report, got up and chased after him: "Are you in such a hurry?" Why don't you learn about Qiao Fei in the database first? ”

"What do you know, the information in the database is on the identification report, half a month ago, her parents came to report that she was missing, and they left some basic information."

Officer Hao said as he walked.

"Who was in charge of looking for her at the time?"

Black Box continued.

"I don't know, it should be a colleague from the regional police station."

Officer Hao replied.

"Would you like to go to this colleague first to find out the situation?"

"No, I don't think there are any valuable clues, if there were, it would have been entered into the database a long time ago."

"Okay."

Blackboy nodded reluctantly.

In this way, Officer Hao drove the car to the community where Qiao Fei's home was located according to the address recorded on the identification report.

This is a somewhat old community, located in the old town of Linhai City, and the buildings look a little dilapidated.

"Let's behave naturally later, let's come over and learn about Qiao Fei's social relations, but we must not let her family know that we have discovered Qiao Fei's blood, which will make her family worried."

After Officer Hao parked the car, he turned his head and gave Black Boy an order.