Mr. Zhang Tian's body had problems before entering the screening room.

This shows that what happened to him was not some sudden death without warning, nor was it poisoning planned by the enemy.

Otherwise, Mr. Zhang Tian, who had already discovered that his situation was wrong, would not have gone to the screening hall to watch a movie and rest as if nothing happened, instead of choosing to call the police and seek medical treatment.

This means that he knows exactly why he is unwell.

And choose to resist hard.

After knowing this, the purpose of Conan and Gray Plains' investigation has actually been achieved:

"There's a good chance that guy has some kind of disease, and he knows it."

"In this case, we only need to wait for the hospital doctor to send a diagnosis certificate, and we can easily confirm that his sudden death has nothing to do with Lin Xinyi."

Gray Plains made a conclusion in a calm tone, and then turned away with little interest, ready to end the investigation-

Her purpose is just to help her boyfriend get rid of this little trouble, and she doesn't want to get to the bottom of it.

"But it's still weird..."

"Is he really sick?"

"Wouldn't it be more uncomfortable to pour so much water on your head when you are sick?"

"It's normal." Gray Yuan replied lightly: "It may be because he had insufficient blood supply to the brain when he was sick, which caused the brain to be dizzy due to lack of oxygen, so he wanted to use cold water to stimulate himself to wake up." ”

"Hmm...," Conan thought of the answer.

But his detective's curiosity made it difficult for him to stop so easily.

"Let's follow this string of water drops to the front again..."

Conan followed the string of droplets on his own, and within a few steps, he came to the starting point of the droplets:

It's not a restroom, it's a staff lounge.

Conan slowly pushed open the door of the staff lounge, and saw that the interior of the lounge was not small but the furnishings were simple.

There is only a sofa, a coffee table, an air conditioner, a TV, and a separate small bathroom, which is generally empty.

And the string of water droplets that Conan tracked started from the location of the small bathroom.

"There was a half-drunk cup of water on the coffee table, and the air conditioner was still running."

"It seems that Mr. Zhang Tian was halfway through watching a movie before, and came to this lounge to drink water and rest."

"As a result, he suddenly became ill, felt unwell, stimulated his head with cold water, and carried it back to the screening room to continue watching the movie, which led to sudden death?"

Conan roughly came to such a simple and complete set of conclusions.

But just as he was about to turn around and leave.

But he suddenly inadvertently noticed:

"The one on the ground is... Mobile phone chargers? ”

"Why is there a mobile phone charger that falls on the ground and no one cleans it up?"

Conan stepped forward curiously, wearing the gloves he had asked for from Lin Xinyi, and carefully picked up the phone charger.

If you take a closer look, the bulky mobile phone charger is actually stained with a small piece of shocking scorched black.

If you get closer, you can still smell the strong smell of burnt plastic.

If you look closely, you can notice that a small section of the mobile phone charging cable near the charging head has been worn out of the rubber, exposing the metal wire inside.

"This—" Conan's brows tightened, "The charger has burnt marks, and there is a power plug near where the charger fell." ”

"If someone pinched the charging head with their hands to plug in the power supply, their hands could easily touch the small piece of exposed metal wire, which could cause an electric shock."

"Could this have anything to do with Mr. Zhang Tian's sudden death?"

He questioned himself in his own words, but quickly rejected it: "No... Probably not. ”

"Mr. Zhang Tian didn't see any suspicious external injuries on his upper body."

"If he dies suddenly due to electrocution because he touched a broken mobile phone charging cable, there should be visible electric spots on his body."

The so-called electric spot is a special skin damage caused by Joule heating and electrolysis at the contact site when an electric current passes through intact skin.

Electrocuted people often have this kind of hard spot with a grayish yellow color, as if they have been burned by fire.

Therefore, Conan used the current spot as the basis for judging whether Mr. Zhang Tian was electrocuted.

"But not necessarily."

Gray Yuan's voice quietly sounded behind him.

"Huh? Grayplain, how did you come back? ”

"I'm worried that you'll find something that is not good for Lin Xinyi, so come and take a look."

"But you've found a great clue."

Gray Plains stood there quietly, carefully looking at the mobile phone charger that Conan was holding in his hand:

"With this charger, the reason for Mr. Zhang Tian's accident may have to change:"

"He may not be sick, but suddenly electrocuted—"

"Even if he doesn't have visible spots of electric current, it's possible that he was electrocuted."

"Because the current spot is essentially an electrical burn caused by the conversion of electrical energy into heat energy, and it takes a certain amount of time."

"Studies have shown that even atypical I.Degree electrical burns need to be at temperatures above 50 degrees for 20 seconds to develop."

"At the same time, statistics show that in the case of electric shock with an electric shock voltage below 220 volts, up to 1/3 of the victims do not have electric spots."

"I see."

Conan nodded, but his expression was a little subtle:

"But Gray Yuan, how do you feel that you are becoming more and more like Lin Xinyi..."

"You also have studied the content of forensic science?"

"I've read the book that Lin Xinyi bought."

"For me, it's all simple stuff that doesn't take much time to master."

Gray Yuan's words seem to sound a little "arrogant", but her breezy voice can always make people feel that her pride is right:

"Anyway... The lower the voltage, low resistance, and short contact time, the less likely it is to form current spots. ”

"For example, to break free very quickly after an electric shock."

"For example, the skin at the site of the electric shock, that is, the palm of the hand that touches the charging head, is stained with water, which reduces the resistance."

Her tone quietly became subtle.

can make people hear, her last sentence is the point.

"In the palm of your hand... Wet? ”

Conan thought of something, and immediately looked down at the ground carefully:

Sure enough, there were still a few small droplets of water on the ground near the power plug.

Today's air is humid, and these small droplets haven't evaporated much over time, and even the edge burrs are temporarily intact.

"This is a drop of water dripping from Mr. Zhang Tian?"

"Water droplets will drip on this location close to the power plug, which means that..."

"Mr. Zhang Tian was holding the mobile phone charger to plug in the power interface when his hands were stained with water, and he accidentally touched the exposed wire, resulting in an accidental electric shock?"

"That's right."

Gray Yuan nodded approvingly:

"Maybe Mr. Zhang Tian had just washed his hands before the accident, and then found that his mobile phone was not enough, so he found a charging head from the coffee table cabinet and used it to charge his mobile phone."

"As a result, I accidentally touched the exposed charging cable and was electrocuted and fell to the ground."

"He was lucky not to be electrocuted instantly, and he managed to break free from the leaking charging cable."

Then, he recovered from the paralysis, felt that his body had improved, and that nothing would happen to him again, so he got up and left alone.

"But in fact, the electrocution is far more dangerous than Mr. Zhang Tian imagined."

"Even if the surface skin is not damaged and the electrocution is not long, his heart will cause myocardial damage under the action of electric current, which will increase the automaticity of his local myocardium, resulting in ventricular fibrofibrillor."

"The ventricles lose their effective overall contractile capacity and are replaced by rapid and uncoordinated fibrillations of the various myocardiums."

"It's a fatal arrhythmia that can lead to cardiac arrest at any time, leading to sudden death."

"This—" Conan roughly understood:

Mr. Zhang Tian successfully broke free from the leaking charging cable, and then felt his body gradually recover from the paralysis caused by the electric shock, and felt that he was fine.

But in fact, his heart has been "out of rhythm" by electricity, and he may die suddenly at any time.

Because of the dysfunction of the heart, his heartbeat and breathing were abnormally accelerated after the electric shock, and the body, especially the heart and brain, began to gradually fall into a state of hypoxia.

That's why he felt dizzy, so he went to rinse his head with cold water again.

Then, feeling that he had become more sober, he still didn't realize the danger, not only did he not seek medical attention in time, but also ran back to the screening room to watch a movie, trying to heal his body by resting.

But then...

"His consciousness may have blurred."

"On the one hand, the electric current will cause some damage to the cranial nerves themselves; On the other hand, his heart function was affected after he was electrocuted, and his brain suffered from a lack of oxygen. ”

"In that state, one cannot think normally."

"When Mr. Zhang Tian was entangled with Lin Xinyi, he probably didn't know what he was doing at that time."

"He didn't deliberately touch porcelain, and correspondingly, his sudden death had nothing to do with Lin Xinyi."

Gray Plains Wai coldly concluded:

"It was a simple accident."

"Because of Mr. Zhang Tian's own carelessness, the heart stopped after electrocution."

"Hmm...."Conan nodded earnestly.

But his eyes were still a little "distracted" staring at the ground, as if he was observing something and thinking about something.

"You think my conclusion is problematic?"

Gray Yuan Wai asked with some concern:

"It's actually very simple to verify:"

"If Mr. Zhang Tian can survive, he will be able to tell the truth."

"If he can't be saved, an autopsy can determine that he died suddenly from electrocution—"

"Although there are no electrical plaques on the body surface, the serum creatine kinase and its isoenzyme activity in patients with electric shock injury will be significantly increased, and the changes in these serum enzymes are enough to prove that the deceased suffered an electric shock before death."

"In addition, cardiac tissue sections can be made to check for myocardial damage, and atomic absorption spectrometers can be used to detect the metal content of the electrocution site..."

"No, no, no..."

Conan stopped the genius girl in a cold sweat, and listened to a lot of popular science that made people have a headache:

"I have no problem with the conclusion that Mr. Zhang Tian died of electrocution."

"I just think that his electrocution may not have been an accident..."

"It's suicide."