Although the Hammer Maniac committed more than fifty crimes, he left very few traces at the crime scenes.
The most useful clue that the police found at the crime scene was the shoe print of the Hammer Maniac.
After analyzing the shoe prints, footprint experts concluded that the Hammer Maniac should be about 1.8 meters tall, with a burly build and a weight of about 160 kilograms.
Backlog team, conference room.
We are conducting a case analysis meeting.
"This hammer-headed maniac has done more than fifty cases and left only shoe prints! How did he do it?" Hong Xi sighed.
"This just shows that he is a bold and careful person, unlike ordinary desperadoes! He is not afraid of exposing himself even if he is broken and broken, and he can survive every day!" Yu Shan said.
"Yu Shan is right! Although this hammer maniac has well-developed limbs, his mind is not simple. I have analyzed the cities where he committed crimes and found that the place where he committed crimes looks like
It was chosen randomly, but after careful analysis, I found that there is a certain pattern! Everyone, take a look at this picture! "
Han Cheng said and transferred the pictures on the computer to the large LCD screen.
Displayed on the screen was a map of the Dragon Kingdom.
Some cities on the map were marked by Han Cheng with red circles, and they were also marked with serial numbers according to the time when each case occurred.
"Have you noticed any patterns after looking at this picture?" Han Cheng then asked.
Everyone stared at the screen carefully for a while, then shook their heads.
"Han Shen, what exactly did you find?" Hong Xi asked hurriedly.
"According to this map, have you noticed that every time the Hammer Maniac commits a crime in one place, he will go to a city thousands of miles away or even thousands of miles away to commit another crime!"
"It's really true!" Hong Xi stared at the screen with wide eyes.
"Why did he do this?" Shen Mao asked puzzled.
"He is exploiting a loophole in the police system. Back then, it was more difficult for our police to handle cases in different places, especially in cities far away. The police information in the two places basically did not communicate with each other!" Han Cheng said.
"So, the Hammer Maniac took advantage of this loophole to commit crimes all over the country! The police everywhere had no idea that those crimes were actually committed by one person!" Yu Shan continued.
"Yes! And this hammer maniac also knows some guerrilla tactics!" Han Cheng said.
"Guerrilla tactics? Han Shen, what do you say?" Hong Xi looked confused.
"I analyzed the place and time he committed the crime, and I found that every time he committed a crime in a city surrounding the city where he had committed a crime, he would choose at least three months to commit the crime!"
"Three months is the fatigue period for our police to solve cases!"
"This hammer maniac is so cunning! No wonder the experts from the Criminal Police Headquarters can't do anything to him!" Hong Xi said.
"Lan Ru, did you find anything after studying the shoe prints?" Han Cheng asked.
Although Lan Ru is a forensic doctor, she has done research on footprints, so Han Cheng asked her to analyze the shoe prints left by the Hammer Madman to see if there are any new discoveries.
"Let me talk about the conclusion first. My inference is basically consistent with the inference given by the footprint experts at that time. The murderer should have been wearing camouflage shoes that were popular on the market at that time when he committed the crime!"
“So, it’s basically impossible to find someone based on their shoes!”
"However, I have made some new discoveries! I wonder if it will help solve the case!"
Everyone looked at Lan Ru.
"After I scanned all the shoe prints on the computer for comparison, I found that in one case, the murderer's shoe prints were slightly different!"
"What's the difference?" Han Cheng asked.
“The focus of the shoe print is different!”
"Generally speaking, the focus of the shoe is in the middle of the shoe. The main part of the shoe's structure that bears gravity is called the hook, also called the waist iron. When normal people walk, the heel and forefoot will evenly share the person's weight. The depth of the shoe print is basically the same before and after you step on it.”
"But in that case, the focus of the hammer maniac's shoe prints was on the toes!"
Han Cheng nodded, and then added, "This clue is a big discovery. It shows that the hammer maniac's heel should have been injured when he committed that crime!"
Lan Ru nodded, "And based on the shoe prints, it should be his left leg that was injured!"
.........
At the end of the case analysis meeting, Han Cheng made a summary of the hammer maniac's personal information.
Hammer mania.
Male, twenty years ago, about 28 to 35 years old.
Height, about 1.8 meters.
Weight, about one hundred and sixty pounds.
His native place should be Northeastern.
Like to wear camouflage shoes.
Carry a hammer with you.
After summarizing the personal information of the Hammer Madman, Han Cheng assigned investigation tasks to everyone.
Hong Xi is responsible for collecting hammers that were sold on the market twenty years ago.
Han Cheng asked him to do this because he wanted to see what kind of hammer the hammer maniac was most likely to use when he committed crimes.
Shen Mao is responsible for collecting clues about the case online.
Lan Ru is responsible for studying the photos and videos of the crime scene taken by the police to see if there are any new discoveries.
Han Cheng and Yu Shan were responsible for searching for new clues at the places where the crimes occurred.
After careful analysis, Han Cheng decided to first go to Yin City, Ning Province, where the crime was committed when the Hammer Maniac injured his foot.
The reason why Han Cheng chose to go to the silver market first was simple.
Because according to Han Cheng's speculation, the Hammer Maniac injured his foot when he committed a crime in the Silver Market. He may not be as calm and calm when committing crimes as in other cases. Perhaps in this case, he is most likely to reveal his flaws and leave behind Clues.
Another point is that for a tall guy like him, who is 1.8 meters tall, his leg is injured and he may be a little lame when he walks.
And if such a conspicuous bag appears near the crime scene, there may be witnesses.
Han Cheng and Yu Shan took a plane to the silver market two thousand miles away.
Yinshi has a temperate continental arid climate, and the weather here is relatively dry and hot.
When Han Cheng and Yu Shan got off the plane, they felt the oncoming heat wave.
Yin City is a third-tier city in Dragon Kingdom. It now has about three million permanent residents, compared with about one million twenty years ago.
The crime the Hammer Maniac committed in Silver Market was a home invasion robbery, in which he hammered a mother and her daughter to death in their home.
After getting off the plane, Han Cheng and Yu Shan went to the Yinshi Police Station first.
After the director saw the investigation pass presented by Han Cheng, he immediately received Han Cheng and Yu Shan with the highest standards.
Not only did he arrange accommodation for Han Cheng and Yu Shan, he also asked Guo Yue, a veteran criminal policeman who was responsible for investigating the murder of mother and daughter, to personally accompany them in the investigation.
Originally, the director wanted Guo Yue to accompany Han Cheng and Yu Shan to play in the silver market for a few days before investigating the case.
However, Han Cheng declined, because he and Yu Shan came to the Silver Market this time not for tourism, but to investigate the case.
Although the Hammer Maniac has been at large for more than twenty years, a few more days doesn't seem to matter.
But Han Cheng is a person who hates evil. It was fine that he was not responsible for this case before, but now he is responsible for this case.
He would never allow the murderer to remain at large.
He didn't want to waste a second.
He wants to find out the murderer as soon as possible and bring him to justice.
