When the police were turned out to search the house for a body, Jiao Wen also found Lumino from the car and ran back.

"Got it?" Officer Twilight asked.

"Well, I looked in the car." Jiao Wen shook the small bottle in his hand and said.

"What is this? Brother. Ayumi asked curiously as she looked at the things in Jiao Wen's hand.

Jiao Wen took out a pair of white gloves, then opened the lid, sprinkled the dust on the ground and the bathtub little by little, and said, "This is called lumino, also known as luminous ammonia, which I asked for when I went to the forensic doctor to get the equipment." ”

Luminol is a strong acid in the explanation of common nouns, the solution is strongly acidic, and has a certain irritating effect on the eyes, skin, and respiratory tract.

The dust was sprinkled down for a while, and slowly there was a change in some places, the dust emitted a blue light, and the curious young detective team also came over, "Does luminous ammonia glow?" What's the use? Mitsuhiko asked, looking at the chemistry on the ground.

Jiao Wen glanced at him and explained, "The luminescence is due to the luminol reaction, there is hemoglobin in human blood, and hemoglobin contains iron, and iron can also catalyze the decomposition of hydrogen peroxide, so that hydrogen peroxide becomes water and monooxygen, and monooxygenation of luminol makes it glow." ”

Yuan Tai and Ayumi were instantly stunned when they heard this, and the proper nouns in it were not something they needed to disarm in elementary school, but Conan next to him listened very energetically, and most of the detectives should not have used the luminol reaction to solve the case.

While waiting for the reaction to fully occur, Jiao Wen continued to explain, "To put it simply, this substance is used for criminal investigation, and the luminol reaction is an extremely sensitive detection method, which can detect blood with only one part per million content, even if a small drop of blood is dropped into a large tank of water, it can be detected, and the reaction that occurs is to emit a blue light. ”

As he spoke, the blue light became brighter and brighter, "It's amazing, it's really lit up." Ayumi said as she squatted next to her.

"That way, that uncle can't say we're lying." Yuan Tai also became excited when he saw this situation, and said happily to a few friends.

Jiao Wen shook his head, "Even if the luminol reaction is detected, there is no way to say that there is a corpse covered in blood lying in this place. ”

"Why?" Yuan Tai asked puzzled.

"Because this can only prove the existence of blood in this place, that man can make up a reason to prevaricate us, such as falling, or other nonsense reasons, even if we know that it is fake, it will be because there is no evidence, so there is nothing to do about him." Conan analyzed on the side.

"Pretty smart." Jiao Wen praised on the side.

Conan was not at all modest, or perhaps he thought that this simple word did not sum up his ingenuity as a great detective, "And how do we find that corpse?" ”

"Don't worry, let's see if Officer Twilight finds anything on his side." As he spoke, Jiao Wen took the group of children to find the police officers who were rummaging in the house.

A few officers who wanted to help Officer Twilight get angry had searched the whole house up and down, but there was still no trace of the corpse, and if they left like this now, I don't know how the man would mock them.

Officer Twilight saw Jiao Wen coming over and asked, "What are the test results?" ”

"The luminol reaction is obvious, and judging from the speed of the glow, there should be no doubt that there is blood." Jiao Wen said this because there are still some things that can cause a luminol reaction, but there is a certain gap between the brightness and speed of the glow.

"But what if we don't find the body? Now go get a police dog? Officer Twilight couldn't figure out where the body was hidden.

"It's useless, the people who died here may be the people who live here, so the smell is completely mixed, and the police dogs have no effect." Jiao Wen shook his head and explained to Officer Twilight that unless someone could speak beast language, no amount of police dogs would be of much use.

When Jiao Wen scratched his head and wondered, should he detain that person for 24 hours and look for it slowly, the man walked over, this time it was very polite, "May I ask how long you will have to investigate?" ”

Jiao Wen glanced at this person in surprise, "Why are you suddenly so polite?" Did you guess that I wanted to lock you up for 24 hours? ”

The corners of the man's mouth twitched twice when he heard his words, and explained, "This police officer, you have recognized the wrong person, the person you are talking about should be my brother, he sleeps on the second floor." ”

"Your brother?" Jiao Wen circled around the man twice, and then said, "That's easy, Officer Dusk, I know where the body is." ”

"What? Where is it? Officer Twilight asked a little inexplicably, "Nothing happened, how do you know?"

"The brother who slept on the second floor should be just a corpse." Jiao Wen looked at the man and said lightly.

"Mr. Officer, no kidding." The man said with an awkward smile.

"yes, we were scolded by his brother just now." A police officer interjected.

"Then I don't know how his brother scolded you, anyway, it should be a technique, your biggest mistake is to play two roles in front of me, you know, everyone's walking habits, the muscle response of the natural standing state is different, and according to my observation, there is no change between you and the person who opened the door, don't pretend." Jiao Wen looked at the man and pretended to be forced.

In fact, how can there be such a thing, he doesn't like men, how can he remember a person's muscle habits in a short period of time, he said this just because, you are an ordinary person playing role-playing in front of nightmares, and your brain hit it, even if because of the agreement, Jiao Wen's energy remained in a state of almost nothing, but with the instinct of nightmares, he was able to recognize it, this is a person, knowing the result, the reason can naturally be blind.

The man clenched his fists, then released it again, "I didn't expect such a perfect plan to be debunked by you like this." ”

Conan on the side touched his small chin at this time, preparing to learn another sports training course during this time, after all, in his eyes, Jiao Wen has already relied on this profession to solve cases twice.

"So, you admit that you killed someone and then hid the body?" Officer Twilight looked down at him and asked in a deep voice.

The man nodded, and now there was nothing to quibble about, but to bow down and confess.