Coroner Coroner

Lin Xin glanced at Hui Yuanai:

"I know how to synthesize luminol 'by myself'."

"This..." Lestrade was completely convinced:

The master is worthy of being a master.

It doesn't matter if you know magic, but you even know organic synthesis!

Chapter 487 Where is the bloodstain

Lestrade was impressed by Master Lin's knowledgeable side:

"I see, Master!"

"I will arrange for people to go to nearby factories and universities to look for the medicine you mentioned."

"Hmm... don't forget to bring hydrogen peroxide and ammonia."

In a very professional manner, Lin Xinyi asked the police officers who were running errands for the chemicals needed for the occult blood test.

After creating such an aura of a chemical expert...

He turned his head and fixed his eyes on the eight suspects as coachmen:

"You guys, do you understand what I just said?"

"We..." The eight suspects looked at each other in blank dismay.

After an awkward silence, someone finally replied cautiously: "I understand."

"It's just to use that medicine to detect invisible blood on any of us... right?"

"That's right." Lin Xinyi quietly emphasized: "None of you have any signs of recent injuries."

"So, if any of you detect potential blood stains that have been wiped clean, it can basically prove that..."

"For some reason, that person got someone else's blood on his hands!"

His eyes were as sharp as a knife.

The voice was also indifferent, like the white-haired wind of the extreme northern grassland.

Lin Xinyi was deliberately using this method to test the reactions of the eight suspects.

See if they panic at the news.

And the result of the trial was...

"It's okay, officer, I'll cooperate well—I'm not the murderer anyway!"

"Yes, yes."

"It would be nice if it could be done sooner."

The eight coachmen all shouted with such relaxed expressions.

Not a single nervousness, not a single worry.

As if none of them really were murderers.

"This..." Lin Xinyi frowned quietly:

None of these people are worried about occult blood testing?

why?

Could it be that his way of clearing customs was wrong.

Was Jack the Ripper really not among them?

Or... Jack the Ripper is in there, just calm, not showing any timidity, deliberately acting calm in front of the police?

But what's the point?

If he was really among these suspects and saw himself surrounded by the police, he should know that he would not be able to escape.

What's the point of pretending to be calm in the face of the unavoidable occult blood test?

Could it be that they want to use this to let the police relax their vigilance and break out violently?

No... If Jack the Ripper had the confidence to escape in front of so many guns by force, he would have already escaped when the patrol led a team to block and arrest people.

Why wait until now, when we are under siege and the blockade is even stricter?

All of a sudden, Lin Xinyi thought of many, many things.

A faint uneasiness welled up in my heart.

........................

After a long time...

Patrol officers obtained luminol from a laboratory at a nearby university.

Lin Xinyi performed the operation skillfully, and conducted occult blood tests on the parts of the eight suspects who might be stained with blood, and even the clothes they were wearing.

And the test results are...

"None of the eight people have occult blood?"

Faced with this disappointing result, everyone's heart can't help but become very heavy.

The Scotland Yard police officers, headed by Officer Lestrade, subconsciously cast their expectant eyes on Master Lin.

They waited for the omnipotent Master Lin to come up with more magical spells.

But Lin Xinyi was caught in a tangle:

"Why not?"

"Is my previous reasoning really wrong, Jack the Ripper is really not among these coachmen?"

"Or…"

"Jack the Ripper is in there, but there's no blood on him at all?"

In the haze of failure, Lin Xinyi couldn't help thinking of another possibility:

That's Jack the Ripper at his craft.

Killed without blood.

Thinking about it carefully, although the deceased's carotid artery was damaged, the amount of bleeding was extremely exaggerated.

But it is not impossible that the murderer did not have blood on his body.

Because neck cutting and bloodletting are actually a technical job.

The angle and shape of the blood splashing depend on the part of the artery where the blade is inserted.

For example, if the knife is directly inserted horizontally on the common carotid artery of the victim, the blood will shoot out along the horizontal direction.

By adjusting the angle of the lower knife, the direction of blood splashing can be controlled.

As long as you understand anatomy, understand the structure of the human body, cut the knife accurately enough, and the body is agile enough, and the speed of stabbing and closing the knife is fast enough...

You can drain the target's arterial blood without getting blood on your hands.

Lin Xinyi knew this skill himself.

He carefully recalled the scene of the crime scene:

"Although the amount of bleeding is indeed heavy."

"However, the direction of the blood splatter is mainly concentrated on the left side of the deceased's body."

"The direction of the splash is relatively concentrated."

"In addition, the neck was severely damaged by the back and forth cutting of the blade, and it was impossible to distinguish the initial stabbing angle."

"So it cannot be ruled out that the murderer performed targeted bloodletting on the deceased before repeatedly cutting open the neck of the deceased."

This is indeed a possibility.

With the skills that Jack the Ripper showed before, he may indeed be a master of "killing without blood".

But the problem is...

"How about thinking of this possibility?"

Lin Xinyi's brows furrowed deeper and deeper:

"No blood is no blood."

"Since there is no way to detect blood from these suspects, I have no way to be sure that Jack the Ripper is among them."

"I can't rule it out at all. This is actually the result of my reasoning error."

Yes, no matter how you look at the situation now:

It's more like he guessed wrongly the mind of the person who made the question and got the wrong result.

Maybe Jack the Ripper really isn't here.

Lin Xinyi was tangled in thought here, but the eight suspects were already getting a little impatient:

"Officer, we've all been waiting for so long, so we've done all the tests."

"Should we go now?"

"This..." Lestrade hesitated for a while: "Master Lin, since there is no trace of blood on them."

"Then... just let them go?"

Lestrade was shaken in his heart.

The police officers also began to gradually doubt the master's magic power.

Seeing that no one was blocking them, the eight coachmen also slowly retreated to their own carriages, as if they couldn't wait to leave.

"and many more--"

Lin Xinyi suddenly stopped them.