Toshiya Oda Kiri, not a murderer?

Everyone looked at each other:

Obviously, all the suspicions point to this rebellious minister, young master.

How could he suddenly be no longer suspicious?

Is this the conclusion that can be drawn by looking at two photos?

Everyone was puzzled in their hearts, and Officer Shiratori, who was full of thoughts, couldn't help but cast a subtle look at Lin Xinyi:

Your forest management officer will not say that you will enforce the law impartially.

In fact, it was the minister who was sent to change the direction of the investigation and clear his son's name, right?

If so...

Then he can only let Shiratori come to the righteous knight and let Miss Miwako see who is really upright.

Mr. Ren Saburo Shiratori, the more he thought about it, the more he felt his enthusiasm.

But Lin Xinyi's expression was not unusual at all.

He did not excuse the minister's son at all, but explained calmly:

"The proof is in these two photos."

"Just look at it."

As he spoke, Lin Xinyi took out two photos from the stack of materials.

One is a close-up of the murder weapon, the blood-stained scalpel.

One is a picture of the surgical instrument box and its surroundings.

The surgical instrument box was placed on a wide table not far from the living room, which seemed to be used by Dr. Hitono as a practice table.

In the photo, the lid of the box is wide open, and all kinds of knife handles, pliers, and scissors that are unnamed, looking similar, are neatly placed inside.

What you can tell at a glance is that there is one less handle in the box.

There was also a disposable scalpel blade wrapper that had been torn open.

And on the table outside the instrument box, there is also a pair of long-handled thin pliers with a strange shape.

"It's... Any questions? ”

Everyone looked at each other, their eyes full of confusion.

They obviously didn't understand what Lin Xinyi wanted to express.

"Hmm..."Lin Xinyi was a little helpless: "Asui, don't you see anything?" ”

Asai Narishi is also a forensic doctor who deals with scalpels every day, and he should be able to understand it.

But his performance was not much better than that of the three amateurs of Sato, Shiratori and Takagi:

"What, what's wrong..."

"These two photos can only show that the murderer took the scalpel from the scene of the deceased's house, right?"

"And the position of the surgical instrument box is also more conspicuous, you can notice it at a glance-"

"Even Oda Kiritoshi, who had only an extortion relationship with the deceased, can easily find out if he is not familiar with the situation in the deceased's home."

"That doesn't mean that Oda Kiritoshi isn't a murderer!"

Narumi Asai has an active mind.

But his focus and direction of thinking were wrong.

"Okay..."Lin Xinyi sighed lightly: "You come with me to the dissection room of the forensic class." ”

"What are you going to do in the dissection room?"

"Do a test."

Lin Xinyi did not directly answer the doubts in everyone's hearts, but sold the guanzi.

Because he also wanted to test whether his guess was accurate.

In this way, under the leadership of Lin Xinyi, the group curiously came from the search lesson to the identification class, and followed into the instrument room of the dissection room.

Lin Xinyi brought them to the instrument cabinet where all kinds of surgical tools were stored, and asked:

"Imagine if you were murderers:"

"If you want to cut someone's neck with a knife, which scalpel will you use?"

"Which scalpel?"

Except for Asai Narumi, all three police officers replied in confusion:

"Scalpels are pretty much the same, aren't they?"

"Why don't you just pick one?"

"Okay, then you can take your pick." Lin Xinyi said this, turned around and put on medical latex gloves and took out the stainless steel surgical tray.

Then, under the blank gazes of Sato, Takagi and Shiratori...

Lin Xinyi placed five scalpel handles of different lengths in turn in the tray.

In another tray, 24 disposable scalpel blades of different shapes were selected.

"The scalpel is not one."

"The handle can be used often, but the blade has to be changed every time."

"Depending on the operation, the handle and blade are different for different parts."

"Now there are 24 blades here? Respectively... No. blade. ”

"5 handles? They are No. 3, No. 4, No. 7, No. 3 lengthened, and No. 4 lengthened shanks. ”

"You guys think you're the murderer, and at this time Hitono is lying on the sofa drunk? Waiting for you to cut it. ”

"You're going to have to pick a random handle from there? A single handle that combines to form a scalpel that makes it easy to cut through the neck. ”

"This..."Sato, Takagi and Shiratori were completely stunned.

Especially Miss Miwako Sato.

The blades that flashed with a cold light and looked similar were reflected in her eyes? I was dazzled by her:

What the... Aren't they all the same?

Why is this scalpel model more recognizable than the lipstick number?!

"Don't think about it."

"Put yourself in the shoes of a murderer? Choose a scalpel to commit the crime. ”

Lin Xinyi urged again.

The three police officers Sato, Takagi and Shiratori were all confused? I had to react instinctively and choose a random combination from the pile of handles and blades.

Only Asai Narumi reacted the most calmly:

"If you want to kill people with a scalpel and cut your neck with one knife, it's better to use a large round blade."

Although those 24 blades looked no different in the eyes of Sato and others.

But as a professionally trained doctor, Narumi Asai can see the difference at a glance:

In general? The blade that resembles a "full moon scimitar" is mainly used for palaropharyngeal surgery in otolaryngology.

The small round blade is used for fine cutting in ophthalmology, hand surgery, etc.;

Sharp blades are used to cut blood vessels, nerves, and heart tissues;

And the No. 10 medium round blade, the large round blade? It is used to cut through tissues such as skin, subcutaneous, muscle, and periosteum.

If you want to kill someone, you want to cut off the target's neck with a knife, and you naturally have to choose numbers, these have long sharp blades, and are generally used in general surgery and orthopedic surgery.

"I choose a No. 23 blade? Equipped with No. 4 ordinary shank. ”

Narumi Asai spoke out about his choice.

And as soon as he said this, he immediately realized that something was wrong:

"Wait..."

"In that photo just now? The murder weapon used by the murderer..."

"It's a No. 23 blade with a No. 4 ordinary handle!"

"How could he choose the right combination from so many blade handles? Could it be..."

Narumi Asai suddenly reacted:

"The murderer also has medical knowledge?"

At this moment, everyone finally knows? Why did Lin Xinyi say that Oda Kiritoshi is unlikely to be the murderer.

Kiritoshi Oda is also an underground rock singer? Proper medical layman.

How could he find the right combination from those dazzling handles and blades?

It's like asking a straight man to find the shade his girlfriend wants to buy from different brands and different series of lipsticks? It's a job that drives people crazy.

"Could it be a coincidence?"

Wataru Takagi tried to raise an objection.

Although both Sato and Shiratori had chosen the wrong combination just now, he mistakenly chose the combination of the No. 4 handle and the No. 20 blade, and he was able to find the correct answer.

"Because the blade is relatively long, I subconsciously chose one of them."

"With a handle of the right length, it doesn't seem to be very difficult to get the answer..."

When Takagi Wataru said this, he overturned Lin Xinyi's speculation.

That's why he insisted on experimenting.

Tests have shown that one out of three laymen has the correct answer.

That's not a low probability at all.

"Maybe, maybe the murderer is just like me, and he also chooses the right one randomly?"

Wataru Takagi spoke out his analysis with some nervousness.

This big leader even scolded the lovely Miss Miwako, and as a little junior behind Miss Miwako, when he stood up and sang the opposite, he was even more restrained.

And Lin Xinyi will not be unhappy because he is questioned:

"Your suspicions are very reasonable."

"If it's just the right combination of the handle and the blade, there's still a good chance it's a coincidence."

"But...."

Lin Xinyi paused slightly, and looked at Takagi Wataru encouragingly:

"Officer Takagi, try to attach the blade of your choice to the hilt."

"Hmm." Wataru Takagi nodded, and wanted to reach for the hilt and blade of his choice.

"Wait!"

Narumi Asai stopped his dangerous operation in time:

"Takagi, don't just grab the blade with your hands."

"The blade of a scalpel is not mounted like this."

"Huh?" Wataru Takagi was slightly stunned:

In his opinion, the handle and blade of the scalpel are similar to the handle and blade of a razor.

Grab the blade directly with your hand and snap it into the groove at the head of the handle?

"You can't just use your hands."

"Because the scalpel blade is so sharp, it's easy to scratch your hand when you install it."

"Follow the correct operation steps, you should hold the end of the blade side of the handle in your left hand, hold the needle pliers in your right hand, clamp the back of the upper section of the insert hole at a 45° angle, hold the handle with your left hand, and aim the hole groove with downward force."

Asai Narumi suffered from an occupational illness and seriously explained to Wataru Takagi the standard operation of installing a scalpel.

As he spoke, he demonstrated that from the cabinet of surgical instruments, he picked up a pair of needle holders needed to install the blade.

"Wait... Needle forceps? ”

Asai Narumi suddenly reacted again:

"In that photo, isn't there a needle forceps next to the surgical instrument box at the scene?"

"If that needle pair was taken out by the murderer, doesn't that mean..."

"Not only did he choose the right combination of shank blades, but he also knew how to properly install the scalpel blades?"

"That's right."

Lin Xinyi nodded approvingly:

And that's not all: "

"Asai you're used to distinguishing surgical instruments, so you've never been aware of the strangeness."

"But for a layman, finding the right 'needle forceps' from a pile of surgical instruments is a challenge in itself."

Surgical instruments look much the same, and there are many different types of surgical instruments.

"Pliers" alone, there are:

Sponge forceps (bent, straight), needle forceps (coarse needle, fine needle), hemostat (straight whole tooth, curved whole tooth), mosquito hemostatic forceps (bent, straight), tissue forceps, cloth forceps.

The murderer was able to find needle forceps for installing blades from so many "pliers".

This in itself is very doubtful.

What's more, including hemostats, every choice he made was the right one.

"You say that the murderer was chosen randomly, but he was not chosen randomly."

"The handle, the blade, and the needle forceps are all right, and I even know the correct way to install the scalpel."

"This is clearly prepared!"

Lin Xinyi paused for a moment and solemnly concluded:

"If I'm not mistaken, the murderer should be the same as the deceased Nishino Ho..."

"He's a doctor!"