Night, late autumn, dim street lamps, a battery motorcycle lying on the side of the road.

I squatted at the back of the battery bike, using the LED light on my phone to shine on the rear wheel of the bike, I was trying to find the collision marks at the rear wheel, but except for some slight scratches, there was no collision mark at all.

I stood up and said to Lao Lu, who was bending over and staring at the battery car: "The position of the rear wheel of the battery car did not collide. ”

Lao Lu stood up straight, looked at me and said, "Could it be that the scratching of the car caused the lodging of the battery car?" ”

I said: "I have checked the road around the battery car, and I have found no traces of emergency braking of the car, so it should not be the battery car rolling over caused by the motor vehicle." ”

Lao Lu said: "What if those careless and paralyzed drivers did not brake urgently? ”

I said, "You see, the battery car is on the far right side of the road, almost against the sidewalk, but the direction of its lodging is to the left. If it is a car or a motorcycle, then the location of the vehicle that caused the accident should be on the left side of the battery car. Because of inertia and impact force, under normal circumstances, the battery car should be lodging towards the right, that is, towards the direction of the sidewalk, but this battery car is lodging towards the center of the road, so the scratching is not established. ”

Lao Lu frowned and said, "Then this traffic accident is strange." ”

I said, "Yes." Otherwise, the traffic police department will not find you. ”

Lao Lu nodded and said, "Indeed." It's not like a simple traffic accident. ”

I said: "It can be said that this is not a traffic accident, because the scene of a normal traffic accident will leave a piece of debris left by the vehicle after the impact. However, this scene is too simple, it is an upside-down battery car, because of the lodging, the left rearview mirror is broken, and at the same time leaves a pool of blood on the ground. ”

Lao Lu said: "I have learned about the deceased just now, she suffered a severe blow to the head, which is a cerebral contusion and laceration, and a fracture at the base of the skull, which is a fatal injury. Other than that, she had no other fatal injuries on her body. ”

I frowned and said: "Lao Lu, you see, there are no obvious impact marks at the scene, in this case, the battery car overturned, I think ordinary people can still make some self-protection behaviors, even if they are injured, it should be more likely that the limbs and body are injured, but the deceased suffered such a serious brain contusion and laceration." I believe that it would not have been possible to form such an injury without a strong external force. ”

Lao Lu's eyes stared at the battery car again, shook his head and said: "You are very contradictory now, you said that there was no impact and no scratching, but you also said that there was an external force, I am a little confused, where does this external force come from?" ”

I said, "That's exactly what I'm thinking about, but I don't have a clue yet, but there are a few guesses." ”

Lao Lu hurriedly said, "Tell me your conjecture." ”

I leaned down, helped the battery car up, and sat on the battery car to start it. It's a pity that the battery car has no power.

I got out of the battery car, stopped the battery car and said, "I understand why the deceased was driving so close to the curb, because the battery car is out of power." You see, this is a battery car with pedals that can be used as a bicycle, and the deceased was driving the battery car with human pedals before he was killed. ”

Lao Lu stepped forward and twisted a few keys to the battery car, which clicked and clicked, but did not start.

He said, "So what does this have to do with the murder of the deceased? ”

I said, "It matters. Look at this road, although it looks flat, but it has a slight slope, on such a road, a woman pedaling a heavy battery car, it is still more difficult. Then she must have been moving very slowly, not even as fast as an adult trotting. At such a slow pace, and the fact that it was a secluded road, there were many possibilities for her to be harmed. ”

Lao Lu nodded and said, "Tell me what you think." ”

I said: "The first possibility is that she was driving against the curb, and it is possible that the murderer ran from the sidewalk and kicked the right side of the battery car, because of the external force of this kick, the battery car fell to the left, and the deceased was caught off guard, and his head hit the ground when he fell, resulting in death." ”

Lao Lu snorted: "It's possible." ”

I added: "The second possibility is that the murderer also carried out the attack, but the murderer did not attack the battery car, but directly chased the victim who was riding the battery car and hit the head with a blunt object, causing him to lose his balance, overturn the car and fall, and finally die." ”

Lao Lu shook his head and said: "The possibility of this kind of crime is too small, and there are no splattered blood droplets on the ground." ”

"The victim was a woman, her long hair may have blocked the splash of blood, and the blunt force of the blow used by the killer may not have been too strong to cause obvious trauma in the first place," I said. However, after the victim fell to the ground, the part of the head that was hit again was struck, so the fatal wound was formed. ”

Lao Lu nodded and said, "There is still a certain possibility for you to say so, but I think such a coincidence is still a bit too far-fetched." ”

I said, "No book is made without coincidence." However, this is only speculation, and further investigation is needed as to what the truth is. Of course, I have one last guess, which I think is the closest to the real situation. ”

Lao Lu's eyes lit up and said, "Come and listen." ”

I said: "What can cause the deceased and his battery car to fall to the left may not only be hit by someone on the right, but also dragged on the left." And the suspect who carried out this kind of drag is very likely to be a speeding car thief. ”

"Eh, this is reliable. Well, this kind of speeding car snatcher is generally committed by two people working together, one of them is responsible for driving a motorcycle, and the other person is in the back seat to carry out the robbery. Perhaps the deceased had a satchel on his body, and in the process of snatching the satchel, the car thief caused the victim to fall down and injure his head. "I also quite agree with Lao Lu's calm analysis.

I said, "That's exactly what it is. I think that's the most likely, too. ”

Lao Lu said: "To be honest, only this possibility is the most reliable, and you should be the first to say this situation." ”

I laughed and said, "You know that I like to sell some guanzi and find out more possibilities that ordinary people can't think of, so as to reflect the value of my consultant!" ”

Lao Lu rolled his eyes.

Of course, Guan Zi is sold, and the investigation still has to be investigated on the blade, of course, we have to start with this most reliable speed thief.

We came to the hospital and examined the wounds of the deceased, and I found that the wounds were formed in one go, and this cerebral contusion was a clear fall injury, which had not been hit with a blunt object. Then the second possibility is ruled out.

In order to solve the case as soon as possible, we did not send the deceased to a forensic examination center, but conducted an autopsy at the hospital.

In fact, I asked for an autopsy just to find a mark on the deceased's body, and this kind of mark is strangulation. How are these strangulation marks caused? That is the strangulation mark left by the car thief when he snatched the bag of the deceased.

Sure enough, on the right side of the deceased's neck, a slight strangulation mark was found. This indicates that the deceased should have had a satchel and carried it cross-body on his right shoulder, because of the snatching by the car thief, which caused the bag strap to leave a strangulation mark on the right neck. It was precisely because the deceased carried the satchel cross-legged on his right shoulder that when the car thief frantically snatched the satchel, it flipped to the left and eventually died of head wounds.

Through the understanding of the family of the deceased, the deceased really traveled with a black satchel.

To further confirm my suspicions and find out what might have been a car thief, we pulled up surveillance video of the road where the incident occurred.

Unfortunately, there is no surveillance video at the scene of the crime. But about 50 meters before the scene of the crime, there was a bank surveillance.

In the surveillance, a motorcycle can be seen speeding by. I looked forward to the video and saw that before the motorcycle entered the surveillance screen, the light of the motorcycle was shifted to the right, that is, to the sidewalk. And for 3 seconds, the lights shook very violently.

Based on the shaking of the light, I made a judgment and said to Lao Lu: "The motorcycle went straight first, and its headlights suddenly turned to the right, indicating that the speeder thief was close to the victim, and then the headlights shook violently, which means that the speeder thief was committing a robbery." In the end, the robbery was successful and he fled the scene. ”

Lao Lu nodded and said, "En." The two people who appear on this video are suspects. There are a lot of surveillance probes along this road, as well as high-definition probes set up by our police, and these two bastards will not escape the law. ”

Lao Lu quickly retrieved these surveillance, and in the surveillance, we found traces of the two. However, the two were very cunning, and when they passed the probe, the suspect driving the motorcycle covered his face with his right hand every time, and the suspect in the back seat kept his head down and buried his face in the driver's back. There is no way to extract the facial features of both men.

Then I investigated the license plate of the motorcycle, and the result was also what I expected, it was a fake license plate.

However, the characteristics of this motorcycle are obvious, the red Jialing motorcycle, the rearview mirrors on both sides are gone, and the square headlights.

According to the monitoring along the way, we locked the motorcycle and went to Zhoujiaba, which should have been parked in a residential area.

The criminal police immediately set off to carry out a carpet investigation and visit. The next day, the motorcycle was found under a secluded, early-90s residential building.

Lao Lu and the criminal policemen were all plainclothes hitchhikers this time. First of all, Lao Lu and I took the lead, and after confirming that the motorcycle parked by the flower bed of the residential building was the crime tool of the car thief, we returned to the car and ordered the criminal police to squat here.

After that, Lao Lu and I set off again and walked towards this residential building.

I observed that there are three units in this residential building, a total of six floors, and there are three suites on each floor, so there are 54 suites in this building. Which of the 54 suites will the suspect be in? That's what I'm trying to solve right now.

First of all, I observed the location where the motorcycle was parked, which was just parallel to the exit of Unit 2, so I preliminarily concluded that the suspect should live in Unit 2. In other words, there are still eighteen rooms to be investigated.

I turned my head and saw a few new broadband chassis of the communication company on the wall downstairs, so I whispered to Lao Lu: "We pretend to be employees of the communication company to promote broadband home upgrades. If we find those two suspects, we will subdue one by one, no problem, right? ”

Lao Lu said coldly: "I brought a gun." ”

I rolled my eyes and said, "You won." ”

From the first floor to the fourth floor, we investigated all those who could knock on the door, and found no suspects, and those who could not knock on the door, we also wrote it down, and when it was time to investigate again.

When I got to room 403, I knocked on the security door a few times, but no one responded.

Lao Lu knocked a few times impatiently, but no one responded.

Lao Lu said: "Let's go, go up to the fifth floor." ”

"Wait!"

I looked at the maroon red security door and said with a frown.

Lao Lu had already taken two steps up the stairs, and after hearing me say wait, he turned his head to me and said, "What? Do you hear movement in the room? ”

I still looked at the red security door, and then wiped it with my right index finger near the keyhole on the door, and then raised my finger to face Lao Lu.

"Red? Blood? "Lao Lu's professional sensitivity, after seeing the red, the first thing he thought of was blood.

His thoughts were not wrong, it was indeed blood, and it was fresh blood, which would not remain here for more than 24 hours.

Lao Lu said: "There are blood stains around the keyhole, how do you think it was left?" ”

I said, "There are two possibilities. One is left by the injured when he opens the door, and the other is left when the injured person goes out to lock the anti-theft door. ”

Lao Lu asked again, "Do you think this bloodstain has anything to do with the car thief?" ”

I said, "I don't know. But if the injured person was in such a hurry and left blood around the keyhole, then the situation must have been too serious to treat the wound. I think we should look into it. ”

Lao Lu smiled and said, "Maybe the injured person hurt his finger while chopping vegetables, and hurriedly ran out to buy medicine and buy bandages to bandage." ”

I said solemnly: "Then will this injured person be so cautious and still lock the security door?" ”

Lao Lu put away his smile and fell into deep thought.

I've been cracking the case for so many years, and I have a bad habit of being suspicious when I see blood, in short, when blood stains appear in places where they shouldn't be, I feel that a case has happened.

It's not a gut feeling, it's a lesson learned over many years of detective work.

Of course, Lao Lu is a steady person, and he decided to focus on Room 403, but he must first rule out the suspicion of the remaining 17 houses before he can conduct a further investigation into Room 403.

In the subsequent investigation and squatting operation, all 17 houses in Unit 2 were investigated, and none of them were the houses where the car thieves lived. In addition, during the squatting period, no trace of the suspect was found, and their motorcycles were honestly parked by the flower bed. Then room 403 has become the biggest suspect room.

Suspect, will he be in this room?