Coroner Coroner

"Bring those car owners over—"

"I want to have a good chat with them."

The passengers of the eight carriages, as well as the coachman, were quickly invited forward by the patrolmen.

Confusion was written on their faces.

None of them looked like bad guys.

And Lin Xinyi didn't ask any questions, but just looked at them carefully:

The faces of these people were all clean, and there were no suspicious stains on their hands or clothes. They didn't look at all like the murderers who just killed someone at night.

"Master Lin..."

I saw that Lin Xinyi didn't perform his exercises like a master, nor did he question him like a police detective.

Officer Lestrade couldn't help but asked with some concern:

"Didn't Ms. Elizabeth's undead tell you which one of these eight people is the murderer?"

"..." Master Lin's face darkened, "No."

"We'll have to figure that out ourselves."

"This..." Officer Lestrade became more and more worried: "Now all the suspects have been found."

"But after all, there are a total of eight people here."

"How do we find that Jack the Ripper among them?"

"and also…"

There was another word he hesitated to say.

That's...was Jack the Ripper really among the 8?

Is what the master just asked from the dead man accurate?

In fact, Lin Xinyi himself was not sure about this.

If he were to write the autopsy report for Ms. Elizabeth in reality, he would only write this:

"Two strands of silk and three strands of wool were extracted from the hem of the deceased's skirt. It is speculated that he had been in contact with textiles containing silk and wool components during his lifetime."

That's all the report can do.

Even if it has been marked as "conjecture", it must be vaguely written as "textile made of silk and wool".

It must not be written as specific items such as "carpet" or "sheet".

Because no one can guarantee that this "silk and wool fabric" must be a carpet—it can only be said that the possibility of being a carpet is relatively greater.

Writing in this way contains elements of reasoning and speculation, which is not scientific or rigorous enough.

But because this is the game world, and there is no other way to pass the level.

Lin Xinyi can only use his imagination boldly to deduce the truth based on the little clue in his hand.

He also couldn't be sure that his reasoning, which was barely established by trying to figure out the mind of the questioner, was [-]% correct.

but…

"I can't be 100% sure that the murderer is among these eight people."

"But if Jack the Ripper is really among these eight people... I have a way to find out the real culprit from among them!"

Lin Xinyi showed a confident smile at the corner of his mouth.

"Oh?"

Officer Lestrade widened his eyes curiously:

"Master, what other 'magic' do you have that is useless?"

He seems to have become a servant, calling "master" whenever he has something to do.

But this time "master. Lin" did not disappoint him:

"Magic..."

"In this day and age, it can be considered!"

Master Lin smiled slightly, and slowly read out an uncommon and difficult word:

"Luminol."

"Inspector Lestrade, have you heard?"

"Luminol?"

Lestrade carefully chewed on this extremely unfamiliar word.

The police officers also looked at each other in blank dismay.

Everyone was silent for a while before someone asked cautiously, "What kind of spell is this?"

"..."

Master Lin's face darkened:

"No, it's an energetic organic compound."

"If 'Luminol' sounds incomprehensible."

"You may also call it luminol, or 3-amino-phthalohydrazide."

Lestrade: "..."

Master, your tricks...isn't it too western?

And what is the use of this luminol?

How can we help them and find the murderer among these 8 people?

"It doesn't matter if you haven't heard of it."

"You just need to know that luminol is a special chemical substance."

"It can show a very small amount of blood stains, and make the traces of blood invisible to the naked eye emit blue light visible to the naked eye."

"And the murderer just killed someone, and even cut half of the neck of the deceased."

"Based on the amount of bleeding from the deceased at that time, it may be difficult for the murderer not to be stained with blood."

"If the murderer is really stained with blood, no matter how clean he wipes the blood, there is absolutely no way to escape Lumino's detection."

"so…"

Next, Lin Xinyi didn't need to say anything, Lestrade had already reacted:

There is actually a drug that can detect blood that is invisible to the naked eye?

This is simply a research result that can change the history of criminal investigation!

"Does this drug really exist?"

"of course."

"Luminol was artificially synthesized in 1853, but it has not been used in criminal investigations yet."

"Now you send someone to ask in the laboratories of several nearby universities, maybe you can find this drug."

Luminol was discovered in the [-]s and could be used in the field of criminal investigation, and then became widely known.

In this 1888, it was indeed a novelty.

but it's ok...

Luminol can't be found, and benzidine can also be used.

Benzidine was accidentally discovered by German chemists at the beginning of the 20th century that it can be used to detect occult blood, earlier than luminol, and is the originator reagent in the field of blood survey.

Although it is only 1888, it is still more than ten years away from the beginning of the 20th century.

However, benzidine itself is an intermediate in the synthesis of dyes, which was widely used in the textile dye industry in this era——

Although it was later discovered that this thing is a type of carcinogen, it will cause irreversible damage to workers during the production process.

but it's ok...

The British gentlemen are still happily running sweatshops, and they are not the pioneers of human rights 100 years later.

Just ask the smell in the fog, and you will know that there must be many textile printing and dyeing enterprises with high pollution and low human rights.

Benzidine can definitely be found in these printing and dyeing factories.

Having said that, except for luminol and benzidine...

In the world of Sherlock Holmes, there seems to be a drug for detecting occult blood.

Or Holmes invented it himself.

According to Mr. Holmes himself in "A Study in Scarlet", he "discovered a reagent that can only be precipitated with blood protein."

And it can make the occult blood solution turn dark red and produce brown precipitate.

As a forensic doctor, Lin Xinyi can basically guarantee...

Occult blood detection reagents with such reaction characteristics do not exist in reality.

It should have been invented by Sir Conan Doyle to fool readers.

This is also very normal... All reasoning essays are like this. For the needs of the plot, they often fabricate and exaggerate some scientific phenomena.

If anyone really believed it and used the knowledge in these books to commit crimes in reality, he would be giving the police uncle his head.

However, this is not reality after all.

Maybe in this virtual game world, there really is the occult blood test reagent invented by Holmes.

In this way, luminol, benzidine, and the Kexue drug independently developed by Holmes...

There are at least three candidates.

"If none of these can be found..."

"It's really not possible, you take me to the laboratory."