You went on a blind date and presented an A-level wanted criminal as a meeting gift?

Downstairs at the Jindu Huafu apartment building, when Lin Chen relayed the almost invisible "water-soluble line" and the conclusions about the "temperature-controlled flame-retardant adhesive" to the on-site command center via walkie-talkie, the entire district branch's case-handling group instantly erupted in excitement.

"Holy crap! Is that even possible?"

"Temperature-controlled adhesive...water-soluble line...this killer's physics is too good!"

"Just who is this Consultant Lin? Could a carbon-based organism grow a brain like that?"

Captain Zhang, who had previously been critical of Lin Chen, now stood beside him with his face flushed red. He didn't dare to breathe loudly, and his back was soaked with cold sweat.

He now realized that the other person wasn't just young and impetuous; the other person was genuinely incredibly awesome.

My decades of criminal investigation experience seemed like child's play compared to what the other party had done.

"Immediately investigate the source of this 'temperature-controlled flame-retardant adhesive,' as it is an industrial product with limited sales channels."

Su Qingge calmly issued the instructions, then looked at Lin Chen, her beautiful eyes sparkling with admiration.

This man always manages to demonstrate his uncanny ability to solve cases at the most crucial moments, captivating her every time.

Lin Chen showed no sign of pride; instead, his expression became even more serious.

"Let's go to the second scene."

A murderer capable of devising such a meticulously planned murder would never leave behind so few clues.

This is more like a provocation, a display of intelligence.

……

The underground parking lot of the newly built headquarters of the Ye Group in the south of the city.

The area has been completely cordoned off by the police, and the blinding searchlights illuminate the entire parking lot as bright as day.

A black Mercedes-Benz S-Class sedan, its front end completely deformed, was embedded firmly in a huge square load-bearing column. The car windows were shattered, and the scene was a complete mess.

When Lin Chen and Su Qingge arrived, Jiang Tingxue and her forensic team had just completed the preliminary examination of the body.

The man in the driver's seat, the deceased Liu Feng, was about fifty years old. His face was contorted with extreme pain, and his eyes were wide open, as if he had seen something extremely terrifying before he died.

When Jiang Tingxue saw Lin Chen, a fleeting tenderness, the kind that was reserved only for him, flashed in her eyes before she immediately reverted to the cool demeanor of a professional forensic doctor.

She took off her blood-stained gloves, walked to Lin Chen's side, and handed him a preliminary autopsy report, her voice very low.

"Lin Chen, the situation is just as I expected, and it's quite tricky."

"The deceased had no external injuries. Apart from the injuries caused by the impact, no signs of poisoning were found. Blood samples and stomach contents tests were all negative."

"Judging from the degree of myocardial necrosis and the blockage of the coronary arteries, these are indeed typical symptoms of acute myocardial infarction."

Jiang Tingxue pushed up her glasses.

"And we found nitroglycerin in his pocket, but the cap was screwed on tightly, so he didn't have time to take it."

Su Qingge frowned.

"So, from a forensic perspective, he did indeed die suddenly from a medical emergency?"

"Yes."

Jiang Tingxue nodded, but then added.

"However, there is something strange. His adrenaline levels were unusually high, even more than three times the stress response of a normal heart attack patient."

"This indicates that he experienced extremely intense fear or stimulation before his death."

"fear……"

Lin Chen didn't look at the autopsy report. He walked slowly to the wrecked Mercedes and stared intently at the stiff corpse in the driver's seat.

He did not touch the body, nor did he inspect the vehicle.

He stood there quietly, activating his [God-level Micro-expression Analysis] and [God-level Psychological Profiling] techniques.

To the average person, it was just a face contorted with pain.

But in Lin Chen's eyes, the stiffness of every muscle on the deceased's face, the direction of every wrinkle, and even the degree of pupil contraction at the moment of death were all transformed into the most precise data.

"In a simple myocardial infarction, a person will feel severe pain, suffocation, and a sense of impending death, but their facial expression will mainly be one of agonizing pain."

Lin Chen's voice was very soft, yet it seemed to possess a kind of magic that could penetrate people's hearts.

"But he..."

Lin Chen's gaze fell on the deceased's extremely dilated pupils.

"His pupils dilated to their physiological limit at the moment of death, a typical manifestation of extreme fear."

"And his masseter muscles,"

Lin Chen pointed to the deceased's jaw.

"The degree of contraction has exceeded the range of normal physiological responses. This is not due to pain, but rather an instinctive reaction of the body to suppress screams in a state of extreme panic!"

"Before he died, he didn't feel pain, but rather saw or heard something that terrified him so much that his very soul trembled!"

A flash of understanding crossed Jiang Tingxue's eyes; she immediately understood Lin Chen's meaning.

"You mean, someone somehow triggered his fear, which caused him to have a heart attack?"

"That's right."

Lin Chen turned his head and looked at the intact dashcam on the center console inside the car.

Li Mingyu immediately understood and quickly asked the technicians to remove the recorder.

"Consultant Lin, the recorder's memory card has been formatted, and the last video and audio clips are gone."

The technicians said helplessly after inspecting the equipment.

"format?"

Lin Chen sneered.

"Playing this in front of me?"

He took the memory card and connected it to the police officer's laptop.

[God-level Hacking Skills] Unveiled!

Lin Chen's hands moved across the keyboard like a blur, so fast that it was impossible to see his finger movements.

Lines of complex code that ordinary people simply cannot understand flashed across the screen like a waterfall.

The memory card, which originally showed "no files", was brute-forced in just a few seconds. He managed to dig out a hidden data packet that had been repeatedly overwritten and deleted from the data layer!

"Restore the last ten seconds of audio."

"yes!"

The technicians frantically operated the system, and soon, a very short audio clip came from the computer speakers.

"Buzz...hum..."

There was no human voice, no music, only a strange, low-frequency electronic synthesized sound that made one's chest feel tight and one's scalp tingle.

The sound lasted for less than five seconds before it abruptly stopped.

Everyone present looked at each other in bewilderment, completely unaware of what this meant.

But Lin Chen's eyes suddenly turned cold, like ice that never melts.

Infrasound.

He slowly uttered three words.

"The murderer didn't touch the victim at all. He just remotely hacked into the car's audio system in some way and played this specific frequency of infrasound the moment Liu Feng started the car."

"These sound waves, almost inaudible to the human ear, can resonate with human organs, directly stimulating the amygdala in the brain and amplifying negative emotions, especially fear and anxiety. For someone in a confined, small driver's seat who already has a history of heart disease..."

Lin Chen's voice carried a chilling killing intent.

"This is tantamount to an invisible form of torture."

"The murderer scared him to death!"