The first thing Luo Chuan looked for was the trunk with curved dents. He always felt that the dent should have something to do with the murderer, but it was difficult to tell what caused it for a while. Because the shape of the notch was strange, and the distance between each dent was also very strange, and it appeared on the trunk of the tree where the body was found. So Luo Chuan has always been obsessed with this trunk.

After he checked it repeatedly for a long time, he seemed to say to himself: "What kind of person will climb very easily?" What kind of tools can help climbers climb up and down the straight poplar trunk...... Rock climber? Wrong...... This is somewhat inconsistent with the characteristics of aspen. People who work in special occupations? How did he do it......"

Everyone could hear Luo Chuan's self-talk, but no one dared to talk to him. I'm afraid that I will make a lot of mistakes, don't talk about overtime, and then take the next month's rest, it will not be worth it.

Only Guan Shan, who was sitting in the corner at this time, still fiddling with the mess of the table with his demeanor and movements. There was a lot of garbage leaves, and I couldn't tell what they were. To sort in this messy pile of garbage is beyond the ability of ordinary people. At this moment, he didn't look back, and while continuing to sort out the evidence, he slowly said: "There are many people who can climb high, and which of the soldiers in the real army can climb the aspen is a problem?" It's just that it's not easy for ordinary people to carry a dead body up a tree. On weekdays, there are also only a limited number of people who can work at height, such as workers in dangerous occupations who work at height, but they may not necessarily climb trees at height. Another example is the workers who repair power cables in the city, who often ...... at the top of high-voltage line poles"

Speaking of this, Guan Shan suddenly stopped, and Luo Chuan also stopped what he was doing, muttering and repeating: "High-voltage line...... Cable...... Yes, every aspen tree is like a telephone pole, straight and towering......"

Luo Chuan suddenly turned around and asked Guan Shan: "What are their climbing tools!?" ”

Guan Shan thought for a while, then roughly compared it with both hands and said: "It's a foot buckle, because the pole is smooth and straight, without any adhesion, if you don't borrow tools, unless all the staff are martial arts masters." ”

Luo Chuan suddenly became excited, and immediately started to check the shape characteristics of such a thing.

The foot buckle is a professional climbing tool, iron, rounded. Fix it on both feet, and use the lever principle to make the climber's own weight close to one side of the pole, so that the climb is more safe and stable.

Luo Chuan compared, that's right, it's this kind of thing! The curved indentation on the trunk of the poplar tree is caused by this thing! The killer normally climbs upwards step by step, so each indentation is symmetrical and evenly spaced.

Luo Chuan is happy now, knowing the scope of the suspect's work, it will be much easier to investigate. According to the information they have now, the suspect is a male, about 180 cm tall, and has a strong build. The work he is engaged in is generally related to the power sector, and there are professional climbing tools and techniques. The methods of killing are brutal, but the methods of stunning the victims are not advanced. It should be the level of ordinary workers, who somehow won the trust of the victim and began to commit crimes. He has a brutal temperament, sadistic tendencies, and is prone to finding apricot pleasure in abuse and control. The excessive killing of the victim after his death also shows that his anger is high in his heart, and he may kill again at any time.

After clarifying these clues and evidence, Luo Chuan's heart has a bottom. If nothing else, the victim can be locked in within two days.

was happy, Guan Shan greeted him and said, "Luo Chuan, come and see this garbage, I think it should belong to the murderer." ”

Luo Chuan hurriedly put down the trunk of the tree and leaned over, only to see that Guan Shan seemed to be holding half a used tissue in his hand.

Guan Shan pointed to the tissue and said, "Our suspect may still be a clean-loving person, I found such scraps of paper in the dirt and garbage under the five trees, but now this one is the most complete." I've just looked closely, and the confetti is more or less stained with blood. If the tests show that the blood on it is related to the deceased, it proves that the killer wiped his hands or cleaned the body after each treatment. Doing so at the scene of a crime is an irrepressible compulsion. ”

"Do you think criminals have a habit of cleanliness?" From Luo Chuan's point of view, he definitely hopes that the murderer himself has as many psychological problems as possible, because in this way the criminal will look very different in the vast sea of people. It's convenient to find him, and it's convenient to catch him. The most feared thing to arrest is the kind of ordinary murderer with no characteristics, and it is difficult to find him from the crowd.

But Guan Shan has never liked to say things that he is not sure of, he only thought for a moment and said: "I can't confirm it for you with a few scraps of paper, but I'm sure that the criminal definitely has psychological problems." Even if he didn't have a serious habit of cleanliness, he must have had obsessive-compulsive behavior, which is already certain from the fact that he had to hang the body on a tree. His safe zone is different, high up, in the trees. This is why he is obsessed with the sense of ritual after killing, and prefers to drag the corpse up the tree with great effort. Several deceased people must have something in common, murderers like this one, all have their own obsessed types of killings, and they will not be picked randomly. ”

Luo Chuan nodded and said, "Okay, leave the rest to me!" You go and rest, and I promise you that I will find the murderer in two days. When the time comes, I will be the first to inform you. ”

Guan Shan looked at the rest of the police officers who were still busy analyzing the evidence, and knew that they must also be able to help Luo Chuan. Now that Luo Chuan has gotten a lot of clues, the preliminary investigation and arrest should not be a problem. And Guan Shan can't help much with the arrest of people, he will distract Luo Chuan when he is here, so it is better to go back first for the time being.

In this way, Guan Shan left the police station, and Luo Chuan continued to fight tirelessly, using all the clues known to investigate the suspect. Because there was a lot of evidence, and the forensic doctor extracted suspicious DNA, Luo Chuan quickly locked up a suspect named Dong Hui from the power company.

Luo Chuan's style of acting has always been vigorous and resolute. When Dong Hui was locked, he immediately sent someone out to look for him and took Dong Hui back to the police station.

I thought that this process would have to take a lot of twists and turns, but I didn't expect that Dong Hui would soon come to the bureau and heard that he was still very cooperative in "assisting" the case.

Luo Chuan was a little incomprehensible, he didn't believe that an abusive murderer who liked to hang his body on a tree would surrender so easily. When Luo Chuan walked into the interrogation room, he saw Dong Hui and couldn't help frowning. This... It's a little different from the criminal depicted by Guan Shan, right?