After receiving the news of Shougang Sanatorium, Liu Pengcheng and Lin Institute did a division of labor, Liu Pengcheng went to Shougang Sanatorium to see what was found there, and Lin Institute contacted the Criminal Police Brigade of the Municipal Bureau to see if there were similar cases that could be linked recently, so that there could be more clues.

When Liu Pengcheng arrived at the Shougang Sanatorium, he was taken to a courtyard wall of the sanatorium. When Liu Pengcheng saw the traces found by the security department of Shougang Sanatorium, all the questions were answered.

As we mentioned earlier, all nursing homes have family quarters in the innermost part of the courtyard, and the outside is a sanatorium area. This objectively causes all family areas to have a common feature, that is, they will be close to the courtyard wall! There are even nursing homes where the family area is located in the corner, that is, it is close to the courtyard wall in both directions!

Shougang must be a relatively wealthy unit, and the name of Shougang is also known to everyone, so this place is relatively "thieves". After being visited twice by burglars in the family quarters, the Shougang Sanatorium adopted the same anti-theft measure that most units at the time would have taken – breaking glass into the walls.

The chief of the security section of the Shougang Sanatorium, who was originally an investigator of the Shougang Public Security Department and the backbone of the Second Criminal Investigation Section of the Shougang Public Security Department, came to the sanatorium as a security section chief after retreating to the second line due to illness. The section chief's first instinct was to survey the scene. Then it was discovered that there was a problem with the section of the courtyard wall closest to their family area, and the broken glass of one section of the courtyard wall had been very obviously damaged.

When surveying the vicinity of that section of the courtyard wall, it was found that there were very obvious traces of "herringbone ladder" in the corner of that section of the wall, and a small piece of glass ballast with cotton silk was found underground, and there was a clear forefoot footprint on the wall.

At this moment, the glass ballast was in Liu Pengcheng's gloved hand, and Liu Pengcheng said with a smile: "Section Chief Wang must have figured out the process of their crime." ”

Section Chief Wang nodded: "It should be a gang that committed the crime, covering the wall with a quilt first, and then destroying it, so there is no sound." Then he set up a herringbone ladder and carried the stolen bicycle down the wall through the herringbone ladder, where an accomplice answered. ”

Liu Pengcheng said with a smile: "That's probably it, but your understanding of the situation is limited." Now we have a preliminary judgment that this gang has three people and a 130 truck. And last night we lost 19 cars in our jurisdiction. During the day, three cars were lost in Linjia Village, and the villagers saw an unfamiliar 130 truck with three men in the car. ”

Liu Pengcheng and Section Chief Wang probably guessed the theft process of the criminals, and Section Chief Wang found three economic policemen with big shoulders and round waists, borrowed a herringbone ladder from the engineering department of the nursing home, and asked the service department for a broken quilt. Because I didn't have a 130 truck, I borrowed a 130 truck from the Lunan Oilfield Sanatorium next door for a while. The repetition of the crime began.

The 130 truck put police officers B and C not far from the main entrance of the sanatorium, unloaded the herringbone ladder and quilts, and drove away and stopped on the nearest road outside the damaged wall, which was only 50 meters away from the fence. Then the police armor waited outside the wall.

Police officer C went to the family area to look for a target, and police officer B found a suitable position to stand a herringbone ladder, spread the quilt on the broken glass, and used the bricks prepared to destroy all the glass in the quilt, and there was basically no sound in the whole process.

At this time, police officer C came with a mountain bike, police officer B stood on the herringbone ladder, took the bicycle handed by police officer C, and went down the wall, and police officer A outside the wall took the bicycle and carried it to the car, put it in the compartment, and then came back and waited.

This goes back and forth three times, and finally police officer B first climbs the quilt through the herringbone ladder, rides on the wall to carry the herringbone ladder up, and then goes down the herringbone ladder to A who responds outside the wall, and finally police officer C takes two steps back and kicks on the wall and jumps up, grabs the hand of police officer B, and also goes up the wall, leaving a footprint on the wall that is almost the same as the one on the wall damaged by the criminal. In the end, the two of them got down under the answer of the police officer, got into the car and left. From the time the car drove to the vicinity of the entrance of the nursing home, to the last time they drove away. The whole process takes 13 minutes.

This process is the result of several people to discuss, considering that the lost are all brand-name transmission cars, whether there is an original lock, or whether the lock is easy to use, can affect the value of the second-hand car about one-third to one-half, so they are more inclined to criminals in the process of theft will not waste time to unlock the lock, and will not take violent means of unlocking, first get the car back, and then go back and slowly study the lock, and may even rematch these bicycles with keys.

This judgment is also based on the fact that the more expensive the bike, the lighter it is.

This is still the result of their lack of practice and unproficiency, and if they are more proficient, the process should be able to control for about ten minutes.

Liu Pengcheng and Section Chief Wang brought the three economic policemen over and asked them about their situation and findings, not to mention, they really had some discoveries.

First, the physical fitness of this brother is very good, two of them are demobilized soldiers, or demobilized soldiers of the front-line army, and they were transferred to the Shougang Public Security Department immediately after they were discharged from the army, and the public security department also has its own training, evaluation, and assessment, so they have not relaxed their training, just like that, they obviously feel very tired, and to complete this set of actions, it can't be said that it is laborious, it is also a little difficult.

Second, the only one who is not a veteran is the one who jumped on the wall last, he graduated from a martial arts school, according to him, on the last action on the wall, only one footprint was left, and he didn't practice seriously for a few years, but in fact, he could do very little. At least two of the demobilized soldiers said that they could not do it, and that the scouts of their unit should be about the same.

Third, they used an aluminum alloy herringbone ladder, which is relatively lightweight, but it is different from the indentations left at the crime scene. Not to mention the rest, that is, at the end, the herringbone ladder was carried up to the wall with one hand, although there was another person who should have handed it down, but it could also be seen that the criminal's arm strength was amazing.

Liu Pengcheng wrote down all this, said goodbye to Section Chief Wang, and returned to the police station.

After returning to the police station, Liu Pengcheng immediately notified all the sanatoriums where the bicycles had been lost, and immediately checked whether there were traces of a herringbone ladder on the wall closest to the family area, whether there were half footprints on the wall, and if there was broken glass on the wall, whether there were traces of broken glass being destroyed.

Sure enough, except for the three that were on the concrete floor or asphalt road next to the wall, all traces were found in the remaining ones, and two of them also had glass on the wall, and the glass was also destroyed.

The only difference is the wealthy Dahe Oilfield Sanatorium, the wrought iron fence used by the people, but it was destroyed, the two iron bars were bent, and the people and cars should have gone out from there, without using a herringbone ladder.

And the two integrated squadrons of the Lin Institute and the Criminal Police Brigade have been contacted, and there are no cases that can be combined.

Liu Pengcheng took out his phone and called Captain Wu of the Third Squadron of the Criminal Police, first asked if there was any information about the serial bicycle theft case, and then asked him to bring the trace inspection personnel over.

Captain Wu really didn't want to go. The bicycle was lost, and there were more people who didn't report the case than those who reported it, what kind of case is this, he thought that Liu Pengcheng was "holding back" at the police station and taking a small case as a big case to solve, but Liu Pengcheng spoke, and he had to go again.

Since Liu Pengcheng officially took office, almost all the leaders who can manage him have talked to him one by one, and the central idea is one, and they must cooperate with Liu Pengcheng's work well!

There was no way, Captain Wu asked for two people in the technical department, and took his men to get into the car and prepare to find Liu Pengcheng, but as soon as he went downstairs, he heard someone call him, and when he looked back, he saw that it was Deputy Brigade Wang.

Deputy Brigade Wang smiled and said, "Let's go, let's go to Director Xiaoliu's place to have a look." ”

Captain Wu was a little surprised: "He said that he just lost a few bicycles, don't bother you."

Deputy Brigade Wang smiled: "You, you don't listen to the leader's words well, our captain is his first leader after joining the police, the last time he had a meeting, his evaluation of Liu Pengcheng was that this kid's sense of smell for the case is more sensitive than that of a police dog!" ”