Coroner Coroner

"Otherwise, there wouldn't be such a long series of water droplets pointing all the way to the projection hall."

"So, this burr-uniform shape of the droplet can only indicate..."

Conan confidently gave the answer:

"He was walking very slowly, almost at a standstill."

"Combined with the short distance between these water droplets and the water droplets, it is more certain that Mr. Zhang Tian walked very slowly at that time."

Because it is difficult to determine the frequency of water droplets dripping, I don't know how long it will take before a drop of water drips from Mr. Zhang Tian.

Therefore, it is impossible to scientifically judge its walking speed only from the distance between water droplets.

However, combining the distance between the water droplets and the burr shape on the edge of the water droplets, the conclusions drawn can be called scientific and credible.

"Why does Mr. Zhang Tian walk so slowly?"

Conan murmured to himself and raised a question.

Hui Yuanai also immediately expressed her guess:

"Because, his body already had problems at that time."

"Mr. Zhang Tian did not die suddenly, but before he entered the theater, or even earlier, his body had already developed strong symptoms that made him uncomfortable."

"So Mr. Zhang Tian can't walk fast at all."

"He could only hold on to the wall and walk forward slowly little by little."

"It wasn't until later that he felt a slight improvement in his health, and he was able to walk independently without leaning against the wall."

Haibara Ai said so, and added a reasoning for Conan:

"And that's why the water drops start falling along the wall, and then move away from the wall a little bit later."

"In short, our patient has long been 'ill'."

"And, Mr. Zhang Tian, ​​he knows this himself."

Chapter 375 The real cause of death

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

This shows that what happened to him was not a sudden death without warning, nor was it a poisoned murder secretly planned by the enemy.

Otherwise, Mr. Zhang Tian, ​​who had already discovered that something was wrong with him, would not have gone to the screening hall to watch a movie and rest instead of calling the police and seeking medical treatment.

This means that he knows exactly why he is unwell.

And choose to fight hard.

Knowing this, the purpose of this investigation by Conan and Haibara Ai has actually been achieved:

"That guy has a high probability of suffering from some kind of disease, and he knows it himself."

"Since this is the case, we can easily confirm that his sudden death has nothing to do with Lin Xinyi as long as we wait for the diagnosis certificate from the hospital doctor."

Haibara Ai came to a conclusion in a calm tone, and then turned around in a weary manner, preparing to end the investigation at this point——

Her purpose was to help her boyfriend get rid of this little trouble, and she didn'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're sick?"

"It's normal." Hui Yuanai replied lightly: "It may be because the blood supply to the brain was insufficient when he got sick, which caused the brain to be dizzy due to lack of oxygen, so he wanted to stimulate himself to wake up by pouring cold water."

"Hmm..." Conan also thought of this answer.

But his detective curiosity made it difficult for him to simply stop like this.

"Let's follow this string of water droplets to the front to have a look..."

Conan followed the string of water drops on his own, and within a few steps, he reached the starting point of the string of water drops:

This is not a bathroom, but a staff lounge.

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

The room only has a sofa, a coffee table, an air conditioner, a TV, and a separate small bathroom. Overall, it looks empty.

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

"There is a half-drinked glass of water on the coffee table, and the air conditioner is still running."

"It seems that Mr. Zhang Tian watched half of the movie before, and came here to drink water and rest in the lounge."

"As a result, he suddenly fell ill and felt unwell. After irritating his head with cold water, he carried it back to the auditorium to continue watching movies. As a result, he died suddenly?"

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

However, just when he was about to turn around and leave.

He suddenly noticed inadvertently:

"The one on the ground is... a mobile phone charger?"

"Why are cell phone chargers dropped on the floor and no one picks them up?"

Conan leaned forward curiously, put on the gloves he asked for from Lin Xinyi, and carefully picked up the mobile phone charger.

Taking a closer look, the bulky mobile phone charger was actually stained with a shocking small piece of scorched black.

If you take a closer look, you can still smell the strong smell of burnt plastic.

If you observe carefully, you can even notice that a small section of the mobile phone charging cable near the charging head has been worn out, exposing the metal wires inside.

"This..." Conan frowned tightly: "The charger has scorched marks, and there is a power plug near the place where the charger fell."

"If someone pinches the charging head to plug in the power supply, his hand can easily touch the short exposed metal wire, causing an electric shock."

"Is this related to Mr. Zhang Tian's sudden death?"

He asked a question to himself, but quickly rejected it: "No... probably not."

"Mr. Zhang Tian did not see any suspicious injuries on his upper body."

"If he was electrocuted and died suddenly because he touched a broken mobile phone charging cable, there should be electric spots visible to the naked eye on his body."

The so-called current spot is a special skin injury caused by Joule heat and electrolysis at the contact point when the current passes through the intact skin.

This kind of grayish-yellow hard spot often appears on the body of the electrocuted person, as if burned by fire.

So Conan took the current spots as the basis for judging whether Mr. Zhang Tian got an electric shock.

"But it doesn't have to be."

Hui Yuan's mournful voice sounded quietly behind him.

"Huh? Huiyuan, why are you back?"

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

"However, you really found a great clue."

Hui Yuanai stood there quietly, carefully looking at the mobile phone charger in Conan's hand:

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

"It's possible he wasn't sick, but electrocuted—"

"Even if there are no electric current spots visible to the naked eye, it may be an electric shock."

"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 first-degree electrical burns need to be kept at a temperature above 50 degrees for 20 seconds to form."

"At the same time, statistics show that in cases of electric shock with an electric shock voltage below 220 volts, as many as 1/3 of the victims did not have current spots on their bodies."

"I see."

Conan nodded, but his expression was a little subtle:

"But Huiyuan, why does it feel like you are becoming more and more like Lin Xinyi..."

"Do you also have research on the content of these criminal sciences?"

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

"To me, these are just simple things that don't take much time to master."

Hui Yuanai's words sounded a little "arrogant", but her calm voice always made people feel that her pride was justified:

"In short... the lower the voltage, the lower the resistance, and the shorter the contact time, the less likely it is to form a current spot."

"For example, breaking free quickly after being electrocuted."

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

Her tone quietly became subtle.

It can be heard that her last sentence is the key point.

"Water on your palm...?"

Conan thought of something, and immediately lowered his head to observe the ground carefully:

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

The air is relatively humid today, and these small water droplets have not evaporated much with the passage of time, and even the edge burrs have temporarily remained intact.

"Is this a drop of water dripping from Mr. Zhang Tian's body?"

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

"Mr. Zhang Tian took the mobile phone charger and plugged it into the power socket with water on his hands, and accidentally touched the exposed wire, resulting in an accidental electric shock?"

"Yes."

Hui Yuanai nodded approvingly:

"Maybe Mr. Zhang Tian 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 to charge his mobile phone."