Coroner Coroner

Could they be the same person?

A series of conjectures arose in Lin Xinyi's mind.

"Director Tsunoda, as you said, my guess is too far-fetched."

"So, I have to find a way to verify this conjecture."

Lin Xinyi frankly admitted the problems in his reasoning.

But at the same time he asked:

"Did you really find nothing near this tree?"

"Nothing at all!"

Director Kakuda reluctantly replied:

"Not to mention bullet casings, warheads, and bullet holes, there isn't even a trace of blood."

"You said that man might have attacked the bear with a gun, and the bear should have bleed on the ground after being shot?"

Lin Xin was silent for a while.

He didn't doubt the authenticity of Director Kakuda's answer, nor did he question whether there were any omissions in their investigation.

Because when he was arranging the survey mission, he specially asked Hattori Heiji to stay at the scene as a "supervisor".

With the precious son of the immediate boss's immediate boss around, it was too late for these grassroots police officers to actively behave, so how dare they steal and play tricks.

"No blood, no shell casings, no bullet holes..."

"Is my guess wrong?"

The thought flashed away.

"No... There is one more basic survey work that has not been done."

"Smoke reaction—"

"If the mysterious person did shoot the tree, there must be residue from the shooting on the bark."

"It doesn't matter if I didn't find the shell case or bullet hole, as long as I can detect the shooting residue from the tree, it can prove my conjecture!"

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

After a long time, support from the Osaka Prefectural Police Headquarters finally arrived at the scene.

They brought the survey tools Lin Xinyi needed.

Checking the gunpowder smoke reaction is a very simple matter. Even forensic courses in various places where the hips are generally stretched are equipped with test strips for testing the gunpowder smoke reaction.

This test paper replaces the nitrate with a metal compound that is more reactive than nitrate, resulting in a noticeable color change.

And Lin Xinyi had already extracted corresponding bark samples from the trunk, crown, branches and other parts of the tree, numbered, recorded, and preserved them.

Spray organic solvents such as ethanol and acetone on the bark to be tested, soak it, and then test it with test paper...

The result came out quickly:

"Shot residue measured on the bark—"

"Someone did shoot in this tree!"

Lin Xinyi got the answer he wanted.

only…

"It's still weird..."

After getting the successful test result, Ms. Mao Li, who assisted Lin Xinyi in the smoke reaction test, was a little entangled with it:

"The mysterious man obviously fired a gun, but we failed to find bullet casings, bullet holes and bullets near the scene."

"Where did all these traces go?"

"If the shot was fired at the ground, there should be bullet holes and bullets on the ground."

"If it was a bear, there should be bear blood on the scene."

"Could it be...he shot into the sky to scare the bear away?"

"But in that case, we should at least find the thrown shell casings under the tree, and the bullets that fell from the sky?"

"Is it possible that all these were cleaned up by that mysterious person afterwards?"

Mao Lilan struggled for a while, not only did not come to any conclusion, but instead made herself more and more hesitant.

Unlike her, Lin Xinyi's gaze was extraordinarily clear:

"Miss Maury..."

"I already know why there are no bullet casings, bullet holes and warheads at the scene."

"First of all, I can be sure that the mysterious man is not firing a warning shot into the sky."

"He was standing on a tree and he shot down."

After a slight pause, he gave the proof in an orderly manner:

"Didn't you notice..."

"I took bark samples from various parts of the tree this time, and conducted smoke reaction tests in turn."

"One of the pieces of bark taken from the canopy of the tree even showed shooting residues."

"What does this mean?"

One word awakened the dreamer, and Mao Lilan, who had been struggling before, quickly realized with a bright eye:

"When the gun is fired, the gunpowder smoke should be ejected to the rear of the gun."

"If the shooting residue can be detected even at the top of the tree, it can only mean that the mysterious man was shooting downwards, not upwards."

"Yes."

Lin Xin nodded, and said step by step:

"Also, I am sure that the murderer used a type of revolver."

"This..." Mao Lilan was a little surprised: "We didn't even find the shell casings and bullets. Mr. Lin, how did you confirm the gun type?"

"The same reasoning."

"By detecting the shooting residues in bark samples from various parts, the distribution range of the shooting residues can also be confirmed."

"The revolver gun is different from other guns, and the residue of the shot it sprays out has a wider distribution."

The automatic firearm on one side, because of the relatively closed structure of the firearm, the shape of the gunpowder spray will present a backward and downward semicircle.

However, due to the open magazine shooting of the revolver, the residue of the shooting will be ejected backward without hindrance.

Therefore, the smoke spray shape of the revolver presents a backward "umbrella shape", and the area covered by the distribution of shooting residues will be wider.

"So, I can be sure that the mysterious man used a revolver."

"And because it's a revolver, we didn't find the casings at the scene—"

"The revolver does not automatically eject the shells. After firing, the shells will remain in the magazine and can be easily collected, cleaned, and taken away from the scene."

"Then, this mysterious man looks very suspicious."

"If he just accidentally encountered a brown bear and was forced to shoot back, why did he deliberately clean up the scene and take away the bullet casings left after the shooting?"

"Is it... he did something bad before he met the brown bear, so he didn't want to leave traces and let people know that he was here?"

Lin Xinyi's tone became more serious.

In his eyes, the mysterious man and the murderer chasing the dead were more and more equated.

But Mao Lilan didn't have the mind to follow his train of thought.

There are still doubts in her heart that have not been answered:

"Mr. Lin, since you have confirmed that the mysterious man was standing on a tree and shooting down, why didn't we find any bullets and bullet holes on the ground?"

"Even if he cleaned up the bullets, it's impossible to clean up the bullet holes on the ground without leaving any traces."

The traces of overturning and filling the soil are very obvious.

Had the bullet hit the ground face down, it would have been impossible to leave no trace.

"Since there are no bullet holes on the ground, nor on the tree roots, and it is certain that the murderer shot downwards..."

"After all the impossibilities have been ruled out, no matter how unbelievable what remains, it must be the truth."

Lin Xinyi said a famous quote from Sherlock Holmes.

According to the results of the smoke reaction test and site inspection feedback, he can only draw such a conclusion;

"That bullet should have hit the bear."

"The bullets and bullet holes were on the bear, so that's why we couldn't find these physical evidence."

"but…"

At this time, there is no need for Mao Lilan to question.

Lin Xinyi himself noticed the "loophole" in this only conclusion.

One thing is still hard to explain:

"If the bullet hit the bear, why was there no blood at the scene?"

Chapter 288 Crime Profile

This may be the most difficult case Lin Xinyi has handled since time travel.

Even though they have broken through all the way to this point, the fog in front of them has not dissipated.

And as soon as one puzzle was solved, a new puzzle appeared in front of him:

"Why is there no blood..."

"The power of the bullet is not something that flesh and blood can bear. If the bear was really hit by the bullet, there should be blood stains left on the nearby ground."