At 9:00 in the morning, I drove to the police station to report on the weekend and went directly to the warehouse in the 77th block. When I opened the warehouse door, I found that the only gap in the warehouse was covered with white paper.

"Adam, before I leave, you tell me why luminescent ammonia causes the blood to fluorescently?"

"Light-emitting ammonia is a synthetic chemical component with a chemical formula of c8h7n3o2. Since hemoglobin contains iron, iron can catalyze the decomposition of hydrogen peroxide, making hydrogen peroxide turn into water and monooxygen. Monooxygen makes it shine when oxidizing luminol. What do you remember these things? If you want to fully understand, you have to re-learn many things in chemistry. Now, you only need to remember under what circumstances you need to use luminescent ammonia, and under what circumstances you need to use als, and remember the taboos."

When Adam explained all this, he didn't stutter at all. It seemed that these things were completely stored in his memory, as if they were his own name, and would never forget them in his life.

"Come here."

I closed the warehouse door on the weekend and walked to the white paper in the warehouse. After getting close to it, I found that there were blood on every piece of white paper here.

"You have the basis for blood stain identification, but I don't know what level of this foundation has reached. Let's test it first, and then start to enter the formal forensic study." Adam turned his finger to the white paper behind him and asked, "What kind of blood stain is this?"

The blood on the white paper is very simple, and it is composed of a series of irregular ￥¤ that are obliquely upward, and most of the blood dots in the blood are conical dots, and a small number of the blood dots have traces of flowing downward from the center of the dots...

"That depends on where the blood is on this piece of paper."

Adam looked at the weekend with satisfaction. For the first time, he thought the other party was very professional: "The position on the wall of the murder scene is upside down, I need you to tell me the cause of death of the deceased from the blood."

"If this blood is presented on the wall, the murderer should have hit the deceased's head with a blunt weapon. After many hits, the weapon is stained with blood. When the blunt weapon is raised again, the blood that has just stuck to the weapon is sprinkled on the wall along with the force." On the weekend, approached the hanging white paper and analyzed carefully: "This is definitely not the first two blows. If it were the first two blows, there should not be so much blood on the weapon..." He thought for a moment: "It should be that after hitting the deceased's head, it was hit again to make the weapon covered with blood. When it was thrown out, the blood hit the wall..."

"Why isn't it a sharp weapon?"

"The bloodstains are located in different locations. Few people behead their heads when using sharp weapons to kill people. If the internal bleeding caused by piercing into the abdominal cavity sticks to the weapon, the position where the weapon is thrown out should not be in the wall examination position."

After thinking for a while on weekends, I suddenly looked up at Adam: "Damn it, you misled me!"

"When any murderer uses a blunt weapon to hit the opponent's head, he will definitely use his hands for the purpose of killing people. It is impossible to wave the weapon in the direction of his shoulders by waving his weapon with both hands. He must have raised the weapon with both hands and waved it over the top of his head. Judging from the blood stains, being able to stick to the weapon so much blood means that the deceased was in a coma or dead state at that time and had no ability to counterattack at all, so these blood stains should be on the roof of the shed."

Adam smiled, and he looked very simple when he smiled. It was not easy for a man in his forty to maintain a simple smile, which shows that his life has not been polluted by any dirty things in society.

These two guys studied the types of blood that may have appeared in the murder scene in the warehouse for more than two hours. All the types of common cases were asked to study them, and the whole morning passed by gradually in their discussion.

"Adam, go have a meal, I'll take you to an authentic Chinese restaurant."

"Okay." When Adam reached out to the hanging white paper, he planned to help over the weekend, but at least he taught me all morning: "Don't... don't touch, don't touch anything in the room. If you let me see you touch my things... at least I will feel uncomfortable now. Maybe I will become more familiar with it in the future and it will be better if I get used to it. Sorry, I have obsessive-compulsive disorder, not targeting you."

"Ok." He slowly stepped out on the weekend: "I'll wait for you in the car."

Half an hour later, Adam walked out of the warehouse and was very focused on filling out something on a printed form when getting in the car. He didn't look up even after getting in the car.

"What is that?"

After hearing the question on the weekend, Adam responded: "Your course schedule starts with understanding the human body. I don't teach you much about blood, but I have a lot of things like hair, scalp, skin tissue, lip lines, palm lines, fingerprints, tooth shapes, and bones."

"So many? I have to learn bones too?"

Adam shook his head and said, "This is only part of it. After the human body is over, we will teach you microorganisms, fibers, plants, chemical toxins... If you want to know a rough idea, it will take a lot of time." He actually made a rare joke after getting to know each other a little bit of it on the weekend: "Anyway, the most time we have is time."

I laughed over the weekend, I'm afraid they are the most bizarre patrolmen in the whole la. Not to mention there is no patrol area, one needs to receive training again, and the other cannot even enter his own jurisdiction.

Suddenly, I had some idea of ​​why Preston didn't let Adam enter the jurisdiction over the weekend. If he stuffed this goods into the wandering area, he could find dozens of times more cases every day on the chaotic streets than he is now. People from the entire Western Conference arranged to write reports and could not write them. Then Preston would probably get the best of the extremely high crime rate that Los Angeles had never had before.

"By the way, how was the crime scene at the Cecil Hotel you took me to that day? Has the forensic doctor reported it? Has the female corpse been sexually assaulted?"

"So I want to learn forensics, forensics. Everyone knows that the best time to solve a murder case is 48 hours after the incident, but the personnel problems of the forensics and forensics departments are very troublesome. They are used to seeing corpses and murderers, who would rather spend their time on the nanny theft case at the celebrity's home. It's been two days since I've seen that report, including my colleagues in the murder department, either."

When I drove from the 77th block to Chinatown on the weekend, I asked: "When I looked at C private, I felt that the forensic department and forensic doctors were very efficient..."

"That's a TV series. Now you have to make an appointment in advance even when you go to the hospital for treatment. Do you still expect these guys who have government salaries to regard every deceased as close relatives?"

When Adam was inexplicably rushing to the fire, he started to divert his conversation on the weekend, and there was no need to bring this conversation into an unpleasant range: "When did I graduate?"

"Graduation? When you can analyze what object the fiber belongs to or give you a skull based on the tissue composition, you can reshape the person's appearance in his lifetime through 3D simulation. At that time, I'm afraid there is nothing I can continue to teach you."

When I drove over an intersection on the weekend, I thought to myself: "If this is put into the game, it is time to upgrade, right?"
Chapter completed!