"Is the plane they were on now parked on the runway?"

Subsequently, Lin Yao asked the technician.

"Yes."

The technician nodded, then said:

"After it stopped, it stopped there and didn't move."

"Okay, I'll go take a look."

After Lin Yao finished speaking, he walked out and walked directly to the registration channel.

After explaining his intention to the staff, he walked straight in.

Walking into the plane, some technical squadron officers were conducting a search inside.

"You're Brother Yao, right?"

After a police officer saw Lin Yao walk in, he hurriedly stepped forward and asked.

"Yes, hello."

Lin Yao hurriedly greeted him.

"I've heard of you for a long time, and when you see your size, I know it! My name is Wang Lei."

The officer said to Lin Yao with a smile.

"How's it going?"

Lin Yao nodded slightly, and then immediately asked him.

"We're searching, and we haven't found anything special."

Wang Lei frowned and said, looked inside, and then said to Lin Yao:

"Let's go, Brother Yao, I'll take you in and have a look."

"Okay."

Then, Lin Yao walked in with him.

"The victim was killed in economy class, you see here, this door separates economy class from first class, where the flight attendants rest, and there is a curtain separating it."

"And I asked the flight attendant just now, after the plane took off, there were no passengers walking around from here."

While walking, Wang Lei said to Lin Yao.

Lin Yao nodded slightly, and then asked:

"How many people are in first class?"

"Eight people."

Wang Lei said directly,

"So I think these eight people can rule out suspicions."

Lin Yao's expression was solemn, he shook his head and said in a deep voice:

"Not necessarily, after all, human witnesses don't tell the whole story."

"Is there surveillance here?"

Then, Lin Yao looked at him again and asked.

"Yes, black box, but I can't see it for now."

Wang Lei hurriedly replied.

Lin Yao nodded slightly, and then walked towards the economy class.

"This is the seat of the dead?"

After entering, Lin Yao saw that a seat in the aisle was surrounded by a cordon.

"Yes."

Wang Lei nodded.

"Did the plane's lights turn on during the flight?"

"I didn't turn on the lights, it was dusk, and the light in the plane was dim."

"Which passenger is sitting next to him?"

"Well, wait a minute."

Wang Lei spoke, then quickly turned around, took a list of passengers from his colleague, handed it to Lin Yao, and said to him:

"It's this thirty-two-year-old female passenger named Zhang Xiuhong, who was sitting next to him at the time."

"But we've already questioned her, and she said she was asleep in her seat at the time and didn't hear anything."

"But. I always felt that she was suspicious, after all, she was the closest person to the deceased."

After finishing speaking, Wang Lei smiled again and hurriedly said:

"Of course, I'm guessing, there's no evidence."

Lin Yao did shake his head and said directly:

….

"It wouldn't have been killed by the person sitting next to him, because judging from the wounds of the deceased, the murderer should have walked through the aisle, holding his mouth and nose with one hand, and stabbing him in the neck with the other hand."

"That's right."

Wang Lei nodded, and then said:

"Me

I was here all the time, and I didn't look at the corpse, so I really don't know."

At this moment, Yao Jin stepped onto the plane and came over panting.

"Brother Yao!"

Lin Yao immediately turned his head to look at him, and then couldn't wait to ask:

"How about it, can you bring it in?"

"No, Brother Yao!"

Yao Jin frowned and shook his head, sighed and said:

"Their security checks are so strict! I smashed that little file directly into the sole of my shoe, and they found it and let me get it out."

"If I hadn't tried to explain to them, they would have almost caught me and thought I was going to do something!"

"This"

Lin Yao couldn't help but shake his head and smile, and then said:

"Okay, it seems that there is a good chance that the murderer is not the murder weapon he carried."

"Isn't it a murder weapon, could it be that he picked up some sharp object on the way to the plane and held it in his hand?"

Yao Jin couldn't help asking, and then frowned and muttered:

"Did the murderer kill the deceased on the spur of the moment, or was it a premeditated crime?"

Lin Yao took a deep breath and shook his head:

"I don't know."

"By the way, didn't the deceased's fingernails find dandruff, you can compare them with the passengers on the plane one by one!"

Then, Yao Jin's eyes widened suddenly, and he immediately said to Lin Yao.

Before Lin Yao could speak, Wang Lei on the side said:

"No, it's too late, the DNA testing machine is in our team, and if we compare the DNA of so many people, it will take a long time, not a few hours."

Lin Yao also nodded, and then said:

"Time is running out right now, and we certainly can't use such conventional means to solve the case."

While they were talking, a middle-aged detective walked in.

"Kobayashi."

When he saw Lin Yao, he immediately greeted him.

Lin Yao turned his head to look and knew that he was a police officer of the Guangcheng Criminal Police Team, and he had seen him in the conference room just now.

"We just questioned the passengers in the hotel, and we didn't find anything."

The police officer said to Lin Yao with a solemn expression.

"Expected."

Lin Yao nodded slightly,

"It's normal to not be able to ask anything from their mouths, after all, if a passenger saw the murderer, he would have identified it a long time ago."

"And the murderer dares to openly kill people on the plane, presumably his psychological quality is also extremely strong, and through interrogation, he will naturally not ask anything."

The officer nodded, then continued:

"At the same time, we have also investigated the identity of the deceased, who used to be a contractor on a construction site and was in good financial condition, but now he is retired."

"This time I took a plane to Haicheng to find my daughter for a vacation."

"As for interpersonal relationships, because of his previous work, he needs to deal with a lot of people, so it's very complicated, and I can't figure it out for a while."

….

"Contractor?"

Lin Yao's eyes narrowed and he muttered.

"Yes, the other discoveries are gone, I'm just here to tell you."

"Okay, I see."

Lin Yao smiled at him slightly.

"Brother Wang, blood stains have been found here!"

At this moment, a technician with an ultraviolet flashlight shouted to this side.

"Where?"

When Wang Lei heard this, he hurriedly walked over.

Lin Yao and the others also followed.

"This is it!"

The technician said, pointing to the ground about a meter away from the deceased's seat.

Lin Yao and the others leaned over and looked at the ground.

Sure enough, I saw it on the floor

There was one bloodstain, but not a lot, and there were traces of wiping.

"This must have been erased by the murderer with his foot."

Wang Lei looked at the bloodstain and said, and then he asked:

"Is there anything else?"

"Yes, the blood trail went backwards, and there were five more, but not much, only about a drop in each place."

The technician said, pointing behind him.

"That must have dripped from the murder weapon."

Lin Yao stared at that side and speculated in a deep voice.

"Is there any blood in the bathroom?"

Then, Wang Lei pointed to the bathroom in front of the seat and the junction with the first class cabin.

"I just saw it, but no."

The technician shook his head.

"Is there a bathroom over there?"

Immediately afterwards, Lin Yao pointed to the bathroom at the rear of the plane and asked.

"Over there? Haven't seen it yet."

The technician hesitated slightly, then shook his head.

Because they had been surveying near the victim's seat, and his seat was at the very front of the economy class, at the junction with first class.

So the bathroom that far away they haven't checked yet.

"Let's go check it out."

Then, Lin Yao said to him.

"Okay."

The technician said yes, and then walked over with a UV flashlight and luminol reagent.

"By the way, when I came here just now, I went to the autopsy room. They said that the deceased had been detected on his body that he had taken tranquilizers, which was the medicine on his body, so his nerves should have been in a state of depression at that time."

"That's why when the killer kills him, he doesn't have a fierce resistance."

Yao Jin suddenly thought about it and said to Lin Yao.

"Hmm"

Lin Yao nodded slightly, his mind racing.

A moment later, he immediately shouted over there:

"There was blood, blood was found in the pool!"

"Let's go, let's take a look!"

When Lin Yao and the others heard this, they hurriedly walked over.

When I got to the bathroom, I saw the technician looking around.

"Blood was found in the pool, but nowhere else."

He said to them as he inspected the toilet bowl and the floor.

"This murderer is really cunning enough."

Seeing this, Yao Jin couldn't help but shake his head and complain,

"If you kill someone in the front, you don't go to the bathroom in front to wash your hands, but you go to the bathroom at the back to wash your hands."

"Normal."

Wang Lei shook his head, and then said,

….

"After he kills someone, it is very likely that the body will be found, and then there will be a commotion in front of him, and all attention will be drawn to it."

"And he's dealing with it in the bathroom at the back, and it's not going to be so noticeable."

"Hmm."

Yao Jin nodded, and then said:

"But one thing is certain now, the killer was in this bathroom."

"So it seems, the scope has narrowed again."

Immediately afterward, he turned his head to look outside:

"Is the flight attendant on the plane here?"

After saying that, he walked straight out.

Soon, he called two of the flight attendants who were on the plane at the time.

The two flight attendants experienced this incident, and their faces were still full of fear at this time, and they did not slow down.

Yao Jin immediately asked the two of them:

"Do you remember who ever came to this bathroom?"

"This"

The two flight attendants glanced at each other, then frowned and shook their heads, and said:

"There are a lot of people who have come, at least more than 30 people, but who has come, and we can't say what we are told to say without surveillance."

"yes, we wouldn't have thought of this at the time, so our attention wasn't on that at all, but on how to serve the passengers."

After listening to their words, Yao Jin sighed helplessly, and then said:

"Alright, you go out and wait for the time, and then call you when necessary."

"Okay, okay."

The two flight attendants nodded their heads and walked out.

Yao Jin couldn't help but look at the few people present and said:

"Come on, I can't find anything through the bathroom clue."

After saying that, he looked at his watch again, and then said:

"Their flight will take off again at twelve o'clock, and now it's past eight o'clock, and time is really running out!"

After Yao Jin finished speaking, the other people's faces were also extremely solemn.

"Is it possible that the murder weapon is also in this bathroom?"

Then, Wang Lei looked around and asked.

"By the way, where does the excrement in the toilet go? Is it just thrown into the air, or what?"

As soon as Wang Lei asked, Yao Jin immediately thought of this question and hurriedly asked.

A police officer next to him immediately shook his head and said:

"Some airplanes will throw excrement into the air because it is very strict about the whole quality."

"But this type of aircraft is not."

After he finished speaking, Yao Jin immediately asked curiously:

"And what will this plane do with the excrement?"

The officer immediately replied:

"The excrement will be stored and then cleaned up by a dedicated ground crew after landing."

"I see."

Yao Jin nodded, and then said:

"Do you think the murderer knows this pattern, will he just throw the murder weapon into the toilet?"

"I guess I know, otherwise I wouldn't have been able to find any blood in the toilet."

Wang Lei said directly,

"Our testing methods are very forbidden, and if he throws the bloodstained murder weapon into the toilet, it will definitely be detected."

"Okay."

Yao Jin nodded helplessly, and then said:

"If the killer didn't dispose of the murder weapon on the plane and brought it back to the hotel, it would be difficult to investigate."

"There's a good chance he just threw it somewhere."

"Not necessarily."

Wang Lei shook his head directly,

"Because after they got off the plane, the police officers here first searched them, and they didn't find anything before they were allowed to go to the hotel."

"Then you mean the murder weapon must have been on the plane?"

Yao Jin raised an eyebrow and looked at him and asked.

"Well, I don't mean it must be, but under normal circumstances, it is."

Wang Lei was asked like this, and he was suddenly a little unconfident.

"But the point is that we don't even know what the murder weapon is now, how can we find out!"

Yao Jin suddenly sighed helplessly, and then asked:

"You checked the luggage and the places under the seats, and you didn't find the murder weapon?"

"No, you see how many times our people have checked it, not to mention the murder weapon, not even a sharp object has been found!"

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