I'm a street kid, but my wife, a policewoman, won't divorce her

Chapter 730 The Evolution of the Murderer!
Yuan Keyu was killed.

Dou Zhihai was murdered.

During the investigation, it was almost certain that it was done by the same person.

But the case committed by the same person presented two completely different results, which makes people think more.

Chen Xiao did not discuss anything with Cao Xiuyuan and the others at this time, but started thinking on his own.

"If both Yuan Keyu and Dou Zhihai were murdered by Ye Jun... No, it should be Ye Jun. Because on the night Dou Zhihai was murdered, Ye Jun was unable to provide a complete and valid alibi."

"While he was responsible for both crimes, Dou Zhihai's murder was different. After thinking about it, perhaps there is only one possibility..."

"That is, he did not have enough time to perfect the subsequent things, or something unexpected happened when he was about to do these things!"

When he thought of this, Chen Xiao immediately looked at Qin Fei and the other two:

"Captain Cao just analyzed it. We can clearly feel the nature of a young man from Ye Jun. Officer Dou's death was a complete victory for him in fooling the police."

"So, when Professor Yuan was murdered, he took away his spoils. There's no reason why Officer Dou wouldn't leave something for himself when he was murdered. Unless, the conversation I had with him today was all faked by him!"

"But, I can make this promise now. I don't believe Ye Jun really has such a strong ability to disguise himself! He can deceive me with his eyes, emotions, behavior, and words!"

"So, I now suspect that there are two possibilities when Ye Jun killed Officer Dou. One: He knew very well that he could not forge a complete alibi this time, so after killing Officer Dou, he did not have time to take anything away for himself."

"Second, when he was about to take away the spoils of victory, an accident occurred! The accident left him with no time to do anything, so he could only quickly dispose of the body!"

As soon as Chen Xiao finished speaking, Cao Xiuyuan seemed to be awakened. His eyes widened a little and he shouted:

"wrong!"

Hearing these two words coming out of his mouth, Qin Fei frowned and asked, "What's wrong?"

"We overlooked the part where Xiao Dou's body was dumped!" Cao Xiuyuan corrected.

Chen Xiao's expression changed slightly. "After Officer Dou was killed, his body was hung on the outer wall of a shopping mall in Zhushan City. This actually declared his victory."

"Yes, he doesn't need to take any trophies with him, because someone will leave a memorial for his victory! For example, the first people to discover the place might take photos, and the reporters who heard the news would also witness his actions."

Chen Xiao nodded at Cao Xiuyuan.

The latter is indeed correct.

If we only talk about the spoils of victory, the witnesses of everyone after Dou Zhihai's body was dumped would be far more able to satisfy the sense of accomplishment after the victory than anything Ye Jun took away.

Therefore, if we want to analyze the murderer's psychology by focusing on the spoils of victory, it is no longer reasonable at this moment.

Just when Chen Xiao wanted to think of a new direction, Cao Xiuyuan said with a smile:
"But as Chen Xiao mentioned, there was an accident during the journey. I think we can think about it more."

Chen Xiao asked in surprise: "Captain Cao, please speak frankly."

Cao Xiuyuan nodded slightly: "I don't know how much experience you have with serial killers, but serial killers are often the most difficult to characterize. Because with each additional killing, their psychology and methods are like being tempered!" "Many times, I call such killers evolution!"

"The evolved murderers will behave more maturely. But in serial murders, there are active and forced actions. Some murderers evolve in their hearts during subsequent crimes. But some people are forced by external factors to make a choice that seems to be more correct."

"That choice was made under extremely stressful circumstances where time was running out and he might be discovered. But if he succeeded in the end and was not discovered, then his heart would enter another twisted state."

"He would feel that even God is helping him, so everything he does is right!"

"That kind of state of mind will make him even more arrogant, just like Ye Jun that Chen Xiao met today!"

As the saying goes, when three people walk together, there must be one who can be my teacher.

At this moment, Chen Xiao also felt a sense of admiration for Cao Xiuyuan.

"So Captain Cao still thinks that there might have been a coincidence that forced the murderer to handle the situation differently than before?" Chen Xiao asked with a smile.

Cao Xiuyuan nodded: "Yes, for the current murderer, the coincidence is in his favor, but this is a stroke of luck, just like a windfall."

"Some people suddenly become rich overnight. The good thing is that they don't have to be poor that night. The bad thing is that if they don't have the ability to keep their money, the money they get will make them step into a bigger abyss!"

Chen Xiao couldn't help but applaud and said with a smile:
"To simplify Captain Cao's words, the murderer may have suspected that he had been discovered when he killed Officer Dou. But in the end, there may be other factors that made him think that he should not have been discovered."

"However, to be on the safe side, this accident still stimulated him to make another choice, just like the windfall that Captain Cao mentioned!"

"Based on Captain Cao's analysis, we can cast a wider net to see if there really is a person who caused the accident. Once we find that person, the murderer's already incomplete alibi will have a fatal flaw because of his appearance!"

Cao Xiuyuan smiled and nodded: "Yes, that's the truth."

Qin Fei and Sun Zhou also suddenly realized it, but soon Qin Fei frowned again:
"But Officer Dou's death is still being controlled. Once we go find that person, I'm afraid the impact will be out of control."

Cao Xiuyuan let out a long breath: "Catch the thief and catch the leader. Catch the thief and catch the dirty things. Ye Jun understands this principle, and we must understand it. Without evidence, we can only suspect him forever!"

"This is a very good way to find evidence now. I don't want to give up, so I'll take care of it from my superiors. Besides, I'm the leader of the special investigation team, and I should bear the consequences of the investigation."

Listening to Cao Xiuyuan's words, Chen Xiao didn't say anything.

He felt that this was the best way to find evidence at the moment, although this method involved some luck.

But this luck is the result of reasoning about the murderer's psychology.

If they don't try, they will always be in a passive situation.

After taking a deep look at Cao Xiuyuan, Chen Xiao smiled at him and said:
"Captain Cao, go ahead. Even if this method doesn't bring good results in the end, as long as we find this person, then the merits can offset the demerits, or even make the merits greater than the demerits!"

Cao Xiuyuan's eyes lit up and he said with a smile: "You are talking about... the man holding the knife!"

(End of this chapter)