Judging from the evidence in the hands of the police so far, the last case is the most valuable and the closest the suspect has come to committing the crime completely. If the four cases of minor molestation were really committed by the same person, it is clear that the murderer's modus operandi is constantly improving, and the "prey" he chooses is becoming more and more challenging.

The change in the suspect's modus operandi is also one of the traces set forth in Lokar's law of material exchange. If the similarities and similarities can be observed in the modus operandi of the crime, combined with the impression of the crime left in the victim's mind, the accuracy of determining whether the murderer is the same person will be greatly increased.

In the past two days, Lin Shuichi's department soldiers were divided into two routes, Aizawa and Miki went to visit the other three victims of the molestation case to investigate the criminal impressions remaining in the victims' minds, while Lin Shuichi and Hanagata went to the field to investigate the crime scenes of the four molestation cases and experience the changes in the criminal suspects' criminal methods.

Lin Xiuyi did not expect to find any traces of the suspect from the beginning of his arrival at the scene, and three of the four molestation cases took place in a secluded alley, and one occurred under a railway bridge. None of these places are closed locations, and there is little chance of leaving a trace of valuable material. Even if it is really left, it is a road after all, and there will be no trace of just the suspect. It's impossible to tell the difference.

What Lin Xiuyi wanted to see was actually whether the suspect had any special preferences for the choice of location. Because for every criminal suspect, subconsciously will consciously follow some general rules for choosing the location of the crime. These locations are often places that the suspect is familiar with and thinks he can comfortably carry out his criminal plan. In criminal psychology, this is called the principle of minimum effort and the principle of comfort in crime. In view of the fact that the suspect had three consecutive failures before committing the fourth crime, Lin Xiuyi believed that the location of the fourth crime must be the choice of the suspect after careful consideration.

After Lin Xiuyi entered the alley where the suspect was found, he began to explore the surrounding roads. Focusing on the crime scene, he began to constantly wander through the surrounding alleys, carefully observing his surroundings.

"Hanagatari, how does this neighborhood give you a feeling, or why do you think the suspect chose to be here?" Lin Xiuyi suddenly asked Hanagata.

"Police Department, I don't think there's any benefit here except seclusion! By the way, it's secluded, and you can't see anyone in broad daylight. Hanashi replied with an impression.

"Secluded, except secluded?" Lin Xiuyi asked again.

"Then I don't know!" replied Hanagata honestly.

Lin Xiuyi turned on his mobile phone and constantly called up the surrounding navigation on his mobile phone to check the location of the alley at the time of the crime. It was a small alley in the middle of a complex. There is a house on the left and right, but it seems that the owner is not at home. Because the mailbox in front of the door is stuffed with all kinds of advertisements. Look at the surroundings of this small alley. The roads are very winding and winding as they are surrounded by private residential land, and it is not easy to get back to the main road from here without navigation.

Lin Xiuyi walked to the doors of the two houses, saw the advertisement on the mailbox, took it down casually, and then took it in his hand and looked at it.

"Yotsuya Sushi, opening special, new product promotion ...... on August 30"

"Real Estate Promotion, Bunkyo District Real Estate Special"

"Auspicious Japanese food, recommended today...... , only for one day on September 1st!"

"Housekeeping Service ......"

"Shinobi shochuya and sea bream sashimi...... September 3-5 Promotion. ”

………

Lin Xiuyi patiently read all the advertisements in his hand, and from time to time took out his mobile phone to search for the location of these stores on the map, and finally put them back in their original places, the earliest in the advertisements was August 30th, and the latest was September 6th. This made him feel a little strange, so he walked to another house in the alley that was empty, and the newspaper box in front of the door was also stuffed with these small advertisements. Lin Xiuyi picked it up and patiently looked at these advertisements. In terms of time, it is actually similar to the situation of the previous household.

"Huaxing, give me a evidence bag and bring these advertisements back!" As soon as Lin Xiu finished saying this, he took out the white gloves from his pocket, and then put the advertisements at the door of the second household into the evidence bag. These ads look like no one has touched them in a long time, so a thin layer of dust has fallen on the upper area.

"You take all these things back first, and let the colleagues of the science search research institute see if there are any fingerprints of the deceased on them. I'll stay at the scene and go around!" Lin Xiu commanded with a pair of flower shapes.

"Hello, do you want to leave the car for you?" Hanagata was just about to leave, but turned around and asked.

"No, go back and hand over these things to the science search research as soon as possible, and tell them that there are already my fingerprints on them!" After Lin Xiu saw the flower shape and left, he walked in the direction of chasing the suspect at that time with his memory from a month ago. With the help of the navigation map, Lin Xiuyi quickly walked out of this residential area, and he slowly came to the place where he was injured. He hurried here and didn't notice that it was a park. And the place where he fell was technically a pond in the park.

Lin Xiuyi found the management of the park, and after revealing his identity, he asked the other party: "Excuse me, is your parking lot here charged?"

"We don't charge for parking!" replied the park's administrator.

"So, can I ask you, are there any cars parked in the parking lot here for more than a month?" Lin Xiuyi hurriedly asked.

"It's a car that's more than a month old, it seems like there's a white light truck, it's really distressing, even if you don't charge for it, you can't use the public parking space like this, it's really ...... people now," complained to Lin Xiuyi.

"Can you take me to have a look?" Lin Xiuyi asked excitedly.

"Of course, please come with me!" said the manager enthusiastically.

At this moment, Lin Xiuyi's mobile phone suddenly rang!

"Police, I'm Miki, and we just left the third victim's house. According to the victim's description, the suspect was a very strong person, very fierce, and threw her to the ground as soon as he came up...... "The call was from Miki, and she anxiously introduced the impression she got from the third victim to Lin Xiuyi on the phone.

Lin Xiuyi first said sorry to the enthusiastic administrator, and then listened carefully to Miki's report on the other side of the phone. After listening to the call, the little hope that Lin Xiuyi had just gasped in his heart was once again extinguished. According to Miki's description, the suspect has changed so much that he doesn't look like a person at all.