Seeing that Song Nanxi was not cooperating, He Shan's expression suddenly changed.

"Song Nanxi, this is the criminal police team. This is not a place where you can be arrogant. Now all the evidence points to you. You are the murderer of this serial murder case. What else do you have to say?"

He Shan slapped the table and stood up, facing Song Nanxi and shouting with a serious face.

She knew that Song Nanxi was an instructor for police academy cadets before. He also received professional training and had certain anti-reconnaissance capabilities.

Even she herself couldn't find any clues in Song Nanxi.

Even after being brought into the interrogation room, Song Nanxi's face was still very calm, without any panic. This was the scariest thing.

"An expert in criminal psychology, right? Are the evidence you are talking about the fingerprints left at the scene? What if I say that fingerprints can be forged?" Song Nanxi said with an indifferent look.

Song Nanxi's words caused the expression on Qin Wuyan's face to change immediately.

It's not that he didn't know that fingerprints could be forged, but what was the purpose of the murderer forging the fingerprints when he killed so blatantly?

And even if he wanted to forge fingerprints, why would he forge Song Nanxi's fingerprints?

Unless the murderer knew Song Nanxi?

No matter what the reason is, this case is inseparable from Song Nanxi.

Of course, He Shan didn't believe what Song Nanxi said. She had now determined that Song Nanxi was the murderer, and nothing she said now would work.

It's just that they don't have any other clues except fingerprints.

If Song Nanxi never pleads guilty, there is nothing they can do.

He Shan wanted to say something else, but was interrupted by Qin Wuyan sitting beside him.

"You mean someone forged your fingerprints. If that's the case, what was the murderer's purpose? Why did he forge your fingerprints?"

Qin Wuyan stared at Song Nanxi closely, trying to see any flaws in her face.

But unfortunately, Song Nanxi's expression was calm, not even the slightest bit nervous, let alone panic.

Seeing her like this, he felt a little unsure for a moment.

Could it be that they really arrested the wrong person?

"You have arrested the wrong person. I am not the murderer. If you waste time on me again, you will miss more important clues. As for the murderer's purpose, you should ask the murderer himself."

Song Nanxi stopped beating around the bush with them.

After all, solving crimes is all about time, finding the most important clues within an effective time.

Use the shortest possible time to catch the murderer to prevent him from harming more innocent people.

This is what people in the criminal police team should do, instead of wasting time on a wrong clue.

Of course He Shan would not believe what Song Nanxi said. She looked at Song Nanxi with a pair of cold eyes and warned: "I'll ask you one last time, how did you kill those three people?"

Seeing this, Song Nanxi leaned back on his seat, with a flash of ridicule and helplessness in his eyes.

She didn't say anything more, but recalled the scene she just saw at the scene in her mind.

This case was exactly the same as three years ago, and the murderer three years ago had already been shot.

This case was so strange that even she couldn't guess the murderer's purpose.

But one thing she was sure of was that the murderer was coming for her.

Her fingerprints were deliberately left at the scene just to lure her out.

What is the relationship between the murderer this time and the case three years ago?

At this moment, Qin Wuyan continued to speak: "As far as I know, you and deceased No. 3 knew each other, and you had participated in a training camp at Beijing University before, and you had conflicts during the training."

Because of the clues provided by Lin Zhiyin, the criminal police team quickly determined the identity of the deceased.

Of course, they also investigated Ye Shishi's social relationships and what happened in the training camp.

"The deceased No.3 is Ye Shishi. I just found out. It's true that I had a conflict with her, but it happened a long time ago. Besides, she has been canceled from school and received the punishment she deserves. I And why bother killing her?"

Song Nanxi looked at Qin Wuyan and analyzed it unhurriedly.

Qin Wuyan looked at Song Nanxi with a strange look in his eyes. .

If it were an ordinary person, he would probably have panicked if he said so.

But the person in front of him not only didn't panic at all, but also remained calm and rational even when facing people from their criminal police team.

Her logical analysis skills are also very good, and nothing she says is wrong.

"Let's do this for today." Qin Wuyan stood up from his seat, turned around and walked towards the door.

Seeing this, He Shan's expression changed and she followed him.

"Captain Qin, do you really believe what she said?"

He Shan didn't expect that Qin Wuyan would change his mind with just a few words from Song Nanxi. She chased after him and said hurriedly: "Song Nanxi used to be an instructor in the police force. She is different from ordinary suspects. Don't underestimate her. If necessary, We need to use special means."

"Professor He, you are an expert professor of psychology. Do you know what you saw in her?" Qin Wuyan looked up at He Shan and asked.

He Shan was stunned by Qin Wuyan's question for a moment, and she didn't know how to speak.

She did not find anything suspicious about Song Nanxi, but she believed that these were all disguises made by Song Nanxi.

Although Qin Wuyan believed in He Shan's ability, he always felt that she had a personal grudge against Song Nanxi.

"I know your ability, but I always have my own thinking when solving crimes, and I don't like anyone to interfere with my thinking." Qin Wuyan looked at He Shan with a serious face.

Hearing Qin Wuyan's words, He Shan froze on the spot.

She wanted to say something else, but she saw that Qin Wuyan had already left.

However, Song Nanxi's suspicion has not been eliminated yet, so he has to stay in the criminal police team temporarily.

At this time, forensic doctor Li came over and said to Qin Wuyan seriously: "When I just checked the body, I found this on her body."

The paper held by Forensic Doctor Li had a special pattern printed on it, which was the same found on the two previous corpses.

"This mark is a bit like a phoenix. It should be unique to people from some special organization. The patterns on the two previous corpses were very blurry, but this time the mark is very clear."

After hearing what Forensic Doctor Li said, Qin Wuyan took the mark and looked at it.

At this moment, he suddenly remembered something and his eyes widened suddenly.

Then he took off his clothes and hurriedly pulled down his collar, revealing an identical mark on his left chest.

Seeing this scene, Forensic Doctor Li on the side also widened his eyes in shock.

"This……"

The mark on the body was obviously stamped with some kind of iron piece after death, but why did their captain also have the same mark?

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