Lin Xinyi didn't notice that the leader was inspecting his work with satisfaction.

He was now completely fascinated by the peculiar corpse in front of him:

"The wound surface is flat, the wound margin is neat, and there is no sharp flap formed by repeated cutting."

"The head is obliquely severed from the 3rd cervical vertebra."

"The bone ends are smooth, and there are no repeated saw marks, cut marks, and cut marks."

In short, it was the wound on the neck of the deceased ... Very smooth.

Moreover, there are no traces of repeated cuts, and the wound is a one-time formation.

His head was cut off by a hundred-pound guillotine on the guillotine, and even the bones were instantly cut off.

But the problem is, the guy was on a roller coaster at high speed.

Who can pick up a broadsword in such a place, and strike it up the neck of the deceased without losing the power of the guillotine?

"How the hell did the murderer do it?"

Lin Xinyi has never encountered such an unbelievable case.

You know, cutting off a head is a technical job.

There are bones and ligaments in the neck, and the bones are connected to the tendons, and ordinary people really can't cut them in two.

The several cases of beheadings he had encountered before were basically caused by the murderer repeatedly cutting with a sharp object in order to discard them in pieces after the deceased died.

This kind of situation in which the deceased was cut off by a knife before his death had never been seen in his career.

"Give me my head."

He thought about it for a while, and instructed Komatsu who was serving as an assistant next to him.

The head of the deceased was fortunate enough to fall into the carriage at that time, and it was preserved intact.

"Huh?" Komatsu's expression was stiff.

"The head of the deceased, hand it over." Lin Xinyi added casually.

He was so focused on observation that he forgot that his assistant was actually a novice.

"Hmm..." Komatsu hesitated for a moment, but finally picked up the head with a stiff face and slowly handed it over.

Lin Xin took the head without saying a word, and tried to put the deceased's neck on the ground.

This safety can be installed seamlessly.

This shows that the murder weapon is not only some kind of "sharp weapon", but also has an extremely thin blade and is extremely fast.

There is only a thin line of blood at the interface between the neck and the head, and when it is connected, it is as if the head and body are still connected.

And looking at the head and neck together, Lin Xinyi intuitively found that the wound of the wound was faintly with some arcs.

"I'm afraid the murder weapon is not a knife."

"The wound cut by the knife should be straight, and it can't be so curved."

"This wound... A line, a line! ”

Looking at the faint curvature of blood on the neck of the deceased, Lin Xinyi finally found a familiar feeling.

He'd seen similar wounds, but not on corpses.

That's what he saw from a photo of a wound at the scene provided by a victim who was riding a bicycle and had his throat cut to the throat by a kite string while doing a human injury evaluation.

Since the wound is similar to having a throat cut by a kite string while riding a bicycle, the murderer's modus operandi this time should be...

"Decapitation with a line on a speeding roller coaster?"

"When the roller coaster entered the downhill tunnel, he put a coil around the neck of the deceased, and found a way to fix the coil on the track or wall along the way, and used the speed of the roller coaster to cut off the deceased's head?"

Lin Xinyi deduced a murder method.

But then he began to doubt himself:

"It's... Can this really work? ”

The difficulty of this technique is inevitably a little too great.

A downhill roller coaster, the speed can be good without being scared to cry, and you have to put a coil around someone's neck?

Is this murder or acrobatics?

Lin Xinyi is still trapped in the common sense of the real world, even if he has already speculated that the murder weapon is a line, he does not dare to draw conclusions lightly.

"But... If the murderer's murder methods are really so exaggerated. ”

"Then after he kills someone, I'm afraid there is no way to clean up the killing props left at the scene."

Thinking of this, Lin Xinyi immediately turned his head and said to the police officer of the forensic division who was busy taking pictures beside him:

"Contact the person in charge of investigating the scene of the crime and ask them if they found anything suspicious at the scene."

"Nope." The officer replied directly.

"No?" Lin Xinyi was slightly stunned: "You haven't contacted that side, how do you know that you didn't find it at the scene?" ”

"Uh..."

The officer scratched his head innocently, pointed to his colleague who was searching the roller coaster, and said:

"Aren't they here to investigate the scene?"

"You don't need to contact them, you can tell them that they haven't found anything yet!"

"I..."

Lin Xinyi's mouth opened wide in surprise:

"I'll let you go and survey the scene..."

"Y-you're all scouting on this roller coaster that has reached the finish line?"

"What about the tunnels? Didn't you send someone over there?!! ”

"No.... Nope. A group of Teletubbies looked at me innocently.

Lin Xinyi: "......."

People die in the tunnel, and the tunnel is the scene of the crime.

Instead of going to the tunnel, these guys all circled around the roller coaster that had already reached the finish line looking for clues.

"Are you here to play with me to carve a boat and ask for a sword?!"

"Because the sword fell into the river from the stern, you just wait for the boat to sail to the dock, and then go to the stern to find the sword?!"

"Yes, I'm sorry!"

The officers bowed and apologized tremblingly, and their attitudes were extremely sincere.

But this kind of "craftsmanship spirit" that is not good at doing things and apologizing is very professional, but there is no way to fool Lin Xinyi.

As a management officer, he is now about to be angry by the performance of his subordinates:

The murderer has been determined to be an acquaintance of the deceased in the car, and the scope is very limited.

And the loophole of this murder method is so big that you only need to go to the scene to find the murder weapon, and you can solve the case directly with a high probability.

You don't need to use any scientific survey technology, just use your eyes to find it inch by inch with a flashlight.

It's such a simple case...

You're going to give me the whole trick of carving a boat and begging for a sword?

No wonder you always let the detective be in the limelight and give you a chance that you don't use it!

"Now, immediately, immediately, give me a survey over there in the tunnel!"

Lin Xinyi had never yelled at the juniors he brought before, even though those newcomers might have made a lot of mistakes.

But this time, these investigation police officers who can only take pictures and sell cuteness have completely exhausted his patience.

Tired... Tired of bringing these pig teams friendly...

It's like playing a 1v9 fair game, Lin Xin is so angry that he wants to vomit blood.

Gin on the side looked at it silently, saying that he understood very much.

"By the way, remember to bring Caesar!"

"The murder weapon must be stained with the blood of the deceased, let the dog come and find it, you just follow the dog!"

Lin Xinyi deliberately added.

Luckily, he brought Caesar with him this time.

If it weren't for this ace police officer, I don't know if those full-time photographers would have missed any clues.

"Ugh..."

Seeing Caesar lead those forensic officers to leave in a hurry, Lin Xinyi sighed helplessly again.

And what he didn't expect was...

His teammates were able to give him new tricks.

I saw that after the police officers who went to the tunnel investigation site left, it didn't take long for the police officers who were responsible for searching several key suspects to suddenly discover:

"Officer Lin, Dusk Police Department!"

"We found a bloody fruit knife in the bag of the deceased's girlfriend!"

"What?!" Everyone looked sideways: "That woman has a murder weapon in her bag?" ”

All of a sudden, the deceased's girlfriend, the lady named Aiko, became the focus of everyone's attention.

"No... Impossible..."

"How can I have such a thing in my bag..."

"This knife is not mine... Not me! Not me! ”

Miss Aiko was obviously stupefied by this meeting.

Her incoherent defense only made everyone more suspicious:

"What... The murderer was found so easily. ”

"I thought the woman was suspicious."

"Probably a couple quarrel... Women are terrible. ”

Such a discussion soon erupted among the onlookers.

And vodka also took the opportunity to come out and coax:

"Hey, didn't the murderer get caught?!"

"Hurry up and get us all out!"

"Uhhh

Finally, in the midst of the excitement of the group, Officer Twilight pointed to the Aiko lady and said:

"Good! Bring the female suspect back to the bureau for interrogation! ”

Lin Xinyi: "???? ”

Twilight Police Department...

Those crowds follow the coaxing, why are you messing around?!

With such a low-level trick, can you really deceive you, an old criminal policeman?

It's pretended... Well, it must be to make the real murderer take it lightly, pretending.

Lin Xinyi automatically made up the twilight police department of the first layer to the third layer.

After all, you don't need to know the knowledge of autopsy, just think about it with the thinking of a normal person...

How do you cut off a person's head with a small fruit knife?!

It's really hard to cut off your head.

Not to mention a delicate woman, an untrained man can't do it.

Here's a most intuitive example:

When the famous writer Yukio Mishima committed suicide by caesarean section, he asked his friend to hold the famous knife "Sekisunroku" to make a mistake for himself.

As a result, the friend stabbed Mr. Mishima three times in the neck with a famous knife, but instead of successfully cutting off his head, he was not even able to kill anyone.

In the end, it was a temporary replacement for a person who had practiced Iai kendo, and finally succeeded in cutting off the head with a knife and successfully completed the mistake.

To cut off the head, you need technology, strength, a good knife, and a strong and stable mentality.

A man with a famous knife failed to make a mistake for his friend.

Now those people, even the police, suspect that a woman can use a fruit knife to cut off her boyfriend's head...

Could it be that she is a hidden great swordsman?

Hey... Wait a minute...

If it were in this world, it didn't seem impossible for the Great Sword Hero or something.

Thinking of the performance of Kyogoku Zhen, Mao Lilan and others, Lin Xinyi's mood suddenly became complicated.

Seemingly... The Twilight Police Department is really leaky.

He even considered that "the murderer may be a great swordsman".

Thinking of this, Lin Xinyi finally realized the foresight of his colleagues.