"Does he know the murderer?" Li Hong asked.

"Quite possibly. We believe that the murderer of Chen Song is the accomplice who helped Chen Song kill Ke Yan together last time. Yang Wenbin explained, "The process is a bit complicated, so I won't say much, but we are basically sure that there was another person at the scene when Ke Yan was killed." The murderer Ke Yueqiu bumped into at that time was not Chen Song, but another person. ”

"Oh......" Li Hong listened a little foggy.

"You just said that no clues were found at the scene?" Yang Wenbin changed the conversation.

"Ah, yes."

"What about this?" Yang Wenbin pulled out a photo and asked by pointing to the inconspicuous dot of blood around the corpse.

"Huh?" Li Hong immediately leaned over to look at it, and shook his head a little confused, "We didn't notice...... What is it? ”

"Something small and round has accidentally got marks on it with blood. You ask me, I ask who goes? Isn't that what you police do? Yang Wenbin asked rhetorically, "What kind of clue might it be." ”

"Uh... Is it a seal or something? Li Hong guessed without thinking, "Or the bottle cap ......"

"You used to bring a seal and a bottle cap with you when you killed someone." Yan Junli couldn't help but roll his eyes and complained.

"Then I really don't know." Li Hong said innocently, "Besides, maybe this is not left by the murderer at all, it's just an ordinary trace, it's a coincidence that it appeared here, right?" ”

"What's the deal with the strange sound the guards heard?" Yang Wenbin asked.

"That might be a coincidence." Li Hong pondered, "What, haven't we often encountered this situation?" Sometimes I hear strange noises around me, but in the end, I realize that it is just a neighbor who has bought a new pair of shoes. ”

"Are there any 'neighbors' near the police station?" Yang Wenbin asked rhetorically.

"Uh, this ......"

"There are no accidents in this world, there are just inevitability. What exists will certainly have a reason for its existence. Yang Wenbin concluded, "But since we can't think of that clue now, we can change the clue to investigate." ”

"What?"

"Serial homicides from five years ago."

————————————————————————————————

"I found it!" Yan Junli stepped on the stool and reached out to reach for a thick folder in the high place.

"Be careful!" Yang Wenbin looked at him worriedly with his head tilted.

"It's okay, I've got it." Yan Junli pulled the folder out of the shelf, and while jumping down from the stool, he complained, "I don't know who put the file at such a high place." ”

"Just get it." Yang Wenbin took the file from Yan Junli's hand, and there was still a thick layer of dust on the surface. Yang Wenbin put it on the table, blew it, and then turned it over.

"I participated in the investigation of the case five years ago, but Xiaohong did not. I still remember a lot of details. Yan Junli looked at the yellowed information and photos inside, "The first victim is a nurse, 23 years old, unmarried, but the relationship with her boyfriend was very good before her death, and the two are already engaged." Her body was found in a grove near the hospital, with a severed throat and multiple broken limbs, lying there like a rag doll. ”

Yan Junli flipped through the photo of the little nurse and showed it to the two of them, and both of them frowned.

"It's a terrible death, isn't it?" Saying that, Yan Junli turned another page, "The second victim is a female college student, who was also in love with her boyfriend, and it is said that she was kidnapped on the way to a date with her boyfriend, and her boyfriend went to buy a drink, and when he came back, he couldn't find anyone." When I found it again, it was already a corpse. The second victim seems to be Ke Yan's eldest daughter, but this is just a rumor and has not been confirmed. ”

"Is it the same case for all the victims in the back?" Yang Wenbin asked.

"That's right. The common denominator is that they are all young and beautiful women, unmarried, and in love with their boyfriends. Yan Junli said affirmatively, "The six victims are all like this. ”

Yang Wenbin carefully looked at the photos of the victims, "That's right, the wounds on their necks are all one, deep and thin, exactly the same as the one on Chen Song's corpse, and it is likely that the same person did it." ”

Yan Junli's heart sank, "Does that mean that we really caught the wrong person five years ago?" ”

"I'm sorry...... But ......"

Yan Junli stretched out his hand and made a stop gesture to Yang Wenbin, "It's okay, this kind of thing often happens." I was just...... I feel a little uncomfortable. ”

"So, how did you determine that Xiao Yang was the murderer at that time?" Yang Wenbin asked.

"A ticket." "At that time, we had identified several suspicious cars based on surveillance footage, and there was a red motorcycle that would pass by the crime scene almost every time, but the surveillance never photographed its license plate number." Until one day the traffic police stopped the car because of speeding, he felt that the car was a little familiar when he copied the license plate number, so he reported the number to us, and after checking, it was indeed the suspect motorcycle. When we found out that the owner of the car was a college student, we thought that it might be a coincidence that the surveillance captured it every time, but we quickly dismissed this idea after seeing the countless evidence in Xiao Yang's dormitory. ”

"But you said that Xiao Yang never admitted to the crime until he was imprisoned." Yang Wenbin said.

"That's right. Strangely, he admitted that he used his motorcycle to hide the murder weapon and incriminating evidence, but he did not admit that he killed the girls. We thought he was sophistry, or that he had become insane because of murder, and we didn't think much of it. Yan Junli let out a long sigh, "Now it seems that I am afraid that there is really something hidden......

"It's not your fault. The police's judgment that Xiao Yang was the murderer was quite convincing. Yang Wenbin said, "He had an unhappy childhood, had a very poor relationship with his mother, and did not experience any love, and even had few friends." In this case, he is likely to attack couples who seem to be happy out of jealousy. ”

"The clues left by the case five years ago were pitiful, and many details were destroyed because Ke Yan was taken into account. And at the end of the day, an indiscriminate homicide like this is hard to solve in itself, not to mention that five years have passed. ”

"Wait." At this time, Li Hong suddenly raised his head from the photo, pointed to a certain place in one of the photos and said, "Look here." ”

"What?" Yang Wenbin leaned over.