2: Are you instructing the police on how to handle cases?

The other end of the line fell into a deathly silence.

In the office of the Criminal Investigation Detachment, the officers, who had just finished a day of high-intensity work and were preparing to clock out, all stopped what they were doing.

Su Qingxue's knuckles turned slightly white as she gripped the receiver.

Her voice instantly turned cold, as if quenched in ice.

"Who are you?"

"Do you know the consequences of making such jokes about a cold case from ten years ago?"

In her view, this was undoubtedly the prank of some bored individual.

That case was a scar on the entire Jiangcheng police force; it was still used as a cautionary tale and frequently brought up in internal meetings.

Every criminal investigator remembered this disgrace vividly.

"I am not joking."

Chen Mo's voice remained hoarse and low, devoid of any emotion.

"The perpetrator, male, aged between thirty and forty at the time of the crime, was school logistics staff, and his occupation was related to cleaning work."

His speaking pace was steady, just like someone reciting a report they knew by heart.

At the desk next to Su Qingxue.

A young officer heard the call on speakerphone and scoffed.

"Qingxue, did you run into another psycho making a fake police report?"

"He's even doing profiling now. Who does he think he is? A master detective?"

Su Qingxue's brows furrowed even tighter.

She resisted the urge to hang up and asked procedurally, "What is your basis for this?"

"There is no basis." Chen Mo's reply was simple and direct.

"Are you messing with me?"

Su Qingxue's voice rose sharply, her anger no longer contained.

"You don't have to believe me."

Chen Mo didn't care about her anger and continued:

"But if you go and look through the original case files now, you will find that the autopsy report mentioned a faint scent of disinfectant at the scene, masked by the smell of perfume."

"That wasn't the 84 disinfectant used in hospitals, but industrial-grade sodium hypochlorite, typically used for large-area floor cleaning."

Su Qingxue's breath hitched.

Disinfectant?

She had researched this case in depth; her graduation thesis was even based on it.

There was indeed such an inconspicuous record in the file!

But at the time, everyone's attention was focused on tracing the source of the perfume, believing it to be a clue left by the killer, and thus this point was ignored.

This detail had never been released to the public!

How could the person on the other end of the line know about it?

"Who exactly are you? How do you know the contents of the file?" Su Qingxue's voice became guarded and sharp.

"Who I am is not important."

Chen Mo did not answer, but instead dropped a second bombshell.

"The murder weapon. You have always thought it was ordinary steel wire, but you were wrong."

"It was piano wire, G-5 specification, 0.77 millimeters in diameter, professional concert grade. It has extreme tensile strength, which is why it could instantly sever the cervical vertebrae without damaging the surface tissue of the skin."

"Go check the equipment purchase and damage records of the school's music classroom from back then, especially the piano maintenance records."

Boom!

If the first detail had only shocked Su Qingxue.

Then the second detail was like a thunderclap, exploding in her mind!

Piano wire!

This deduction hadn't even been reached by the top forensic experts at the time!

Because the murder weapon was never found, they could only infer based on the ligature marks.

Yet the person on the other end not only stated the material but even reported the specification and model clearly!

This had already exceeded the scope of "knowing inside information."

It was almost as if… the killer himself was confessing!

No, that wasn't right.

A killer wouldn't turn themselves in this way.

Su Qingxue forced herself to calm down, her brain spinning rapidly.

She asked into the receiver, word by word, "One last question. What is your purpose in doing this?"

Inside the office.

Everyone noticed the change in Su Qingxue's expression.

They gathered around, not daring to breathe.

On the other end of the line, Chen Mo was silent for a moment.

Before his eyes, the face of that girl in the darkness, filled with terror and despair, appeared once again.

"No particular purpose."

He said softly, his voice showing a ripple for the first time.

"I just feel that she has waited for ten years, which is too long."

"The truth should not be buried in the dust."

After saying this, Chen Mo prepared to hang up.

He had already provided enough clues; the rest was the police's job.

"Wait!"

Su Qingxue shouted urgently.

A storm had been stirred up in her heart.

The other person's words were like a heavy hammer, striking hard at her original intention as a criminal investigator.

"Why should I completely believe you? These are all just your speculations!"

She needed an irrefutable reason that would allow her to bypass procedures, convince her superiors, and immediately launch an investigation!

"A reason?"

Chen Mo on the other end of the line seemed to chuckle.

In that laughter, there was a kind of indifference that saw through everything.

"Fine, I'll give you one last hint."

"The killer had extreme mysophobia and obsessive-compulsive disorder; he viewed murder as a form of artistic creation."

"After he strangled the girl, the first thing he did was not to flee, nor was it to clean up the scene."

Chen Mo paused.

Using a tone as if he had seen it with his own eyes, he slowly uttered the words that plunged the entire Criminal Investigation Detachment into an ice cellar:

"He knelt beside the body, as if admiring a work of art, and whispered a sentence…"

"'You are so clean; now, you are finally my most perfect work.'"

Beep… beep… beep…

The call was hung up decisively.

Su Qingxue remained in the posture of holding the receiver.

She was stunned, frozen in place as if struck by lightning.

You could hear a pin drop in the office.

Everyone looked at each other, their faces filled with horror.

This sentence was like a curse from hell, echoing in everyone's ears.

It was too specific, too real, and full of imagery!

It was full of the killer's perverted and twisted psychological characteristics!

This wasn't speculation; this was a verdict!

"Qingxue, this…"

The young officer, who had looked disdainful just a moment ago, now had a pale face and asked, stuttering.

"Immediately! Retrieve all the original case files for cold case 037! The ones with the highest classification level!"

Su Qingxue slammed the receiver down and ordered sternly.

"I want to see them delivered from the Archives Office within ten minutes!"

"Yes!"

… Meanwhile.

Cold Case Archives Office.

Chen Mo slowly placed the receiver of the old-fashioned phone back into its cradle.

Throughout the entire process, there was no expression on his face.

As if he had just made an unimportant phone call.

Only he knew.

Just now, at the moment "Thought Synchronization" ended.

This body's PTSD flared up again, his stomach churning, and his heart pounding uncontrollably.

Relying solely on his iron-like will from his past life, he forced down the urge to vomit.

It seems the weaknesses of this body will take time to overcome.

"Hey, kid."

Liu Fusheng on the recliner had sat up at some point.

A sharp glint flickered in his old eyes; there was no trace of laziness left.

He stared intently at Chen Mo.

"Were you just… calling the Criminal Investigation Detachment?"

"Yes."

Chen Mo replied indifferently and began to organize the files on the table, as if nothing had happened.

"The school female corpse case from ten years ago…"

Liu Fusheng smacked his lips, his cloudy eyes full of disbelief.

"You said you know who the killer is?"

"I don't know." Chen Mo answered without lifting his head.

"Then you just now…"

"I just discovered some overlooked suspicious points while organizing the files and provided them with a direction for investigation."

Chen Mo's explanation was flawless.

He did not want to expose his abilities yet.

Before his wings were fully grown, keeping a low profile was the best camouflage.

Liu Fusheng squinted his eyes and sized him up for a long time, eventually shook his head, and lay back down on the recliner.

"Young people these days really are more daring than the last…"

"Forget it, it has nothing to do with you or me anyway."

Although he said that, he couldn't fall asleep anymore; his ears were pricked up, paying attention to the movements outside.

Chen Mo ignored him.

He put the file for [Cold Case 037] back in its place.

His gaze, however, fell on the newly activated system interface in his mind.

[host: Chen Mo]

[Sin Resonance System LV1]

[Core Function 1: Thought Synchronization (Primary). By touching evidence, you can randomly obtain fragmented sensory memories related to the case. Cooldown: 24 hours. Side effect: Consumption of mental energy.]

[Core Function 2: Heartbeat Localization (Not Activated). Requires locking onto the first criminal's 'sin frequency' to unlock.]

[sin value: 0]

[System Prompt: Solving cases grants sin value, which can be used to upgrade the system and unlock new functions.]

So that's how it is.

Solving cases is the only way for me to become stronger!

A flame ignited in Chen Mo's eyes.

He looked around this "graveyard" filled with dusty files.

In the eyes of others, this is a place of despair and oblivion.

But in his eyes.

This is a… gold mine buried with endless treasure!

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