Conan Super Detective

"First of all, let's talk about Mr. Toda's death from the first..." Dongma took out a book and handed it to everyone.

"There is no water pipe in that room, and there are no other underground water pipes around, and the door is also locked..." Mumu took the book suspiciously, and explained the situation of the first Toda house secret room case.

"Then, regarding the technique of this secret room, you should know the book "The Lamp of Jiang Shenyuan" in your hand." Dong Ma said with a smile.

With that said, Dongma did not forget to remind: "This is a book that Mr. Motomachi is interested in. It was written by the first Frenchman who installed a gas lamp in Jiangshen a hundred years ago..."

"Gas lamp? What do you want to explain?" Mumu asked suspiciously.

"Of course, the content is very boring about how to bring the night to Jiang Shenyuan... The key point I want to say is the preface!" Dongma reminded again.

"This is... the design drawing?" Mumu looked at the piece of paper and asked.

"Yes, at this time, it is rich in a design drawing of the old map of Jiangshenyuan at that time, and the purpose of this design drawing is obvious. It is the old design drawing of the gas pipe used by the gas lamp!" Dong Ma explained.

"Oh, these marks and thin lines originally meant this..." Mumu nodded suddenly.

But Dongma shook his head, because he didn't find the key problem at all.

Instead, Kogoro on one side suddenly yelled: "The three secret room crime scenes have traces of gas pipelines passing by at that time!"

"Yes, the Toda House was originally the residence of the person who introduced the gas lamp, and the museum in Motomachi was next to the city hall at that time. Naturally, it was also the place where the gas was first connected to. Then Mikami and the others went to the library to inquire. , All gas pipes are 3/4 inch!"

"Uh... and then?" Mumu said that his IQ was not enough.

So Dongma directly explained: “These pipes that were paved a hundred years ago, but are now forgotten, can be filled into the basement of households with the use of prisoners. After all, the thickness and the size of the current household water pipes the same!"

"I asked the uncles in the forensics class. The wall lamp in Mr. Toda's basement is a gas lamp, and it is an ancient type that requires ignition!" Ito Xiaohui couldn't wait to raise his hand and speak.

Mumu and others immediately bowed their heads in shame = ashamed, because they were habitually thinking that it was a light bulb, so they neglected such a key clue and formed a fatal blind spot.

"So where does the water come from?" Mugure asked.

This time it was Yuanta's turn to rush to answer: "I walked along the route on the map and found a spot where there was a trace of excavation, and there was a fire hydrant next to it. It should have been filled from there!"

Mumu nodded suddenly, and then asked again: "But even if it is, water will always escape from the gas lamp, right?"

"It's very simple. Pour the gas that can make people into a coma, and then pour in the gas pipe to make Toda coma! Next, just mix the scent of elderberry in the water and pour it in." Dongma Concluded.

"Then the second, what about the explosion of the secret room in the hotel?" Mumu urged impatiently.

"If you look closely at the photos around the museum hall, you will find that gas lamps were installed there in the past. Afterwards, although other equipment was changed to electrical appliances, the lamps were part of the interior decoration and still retained the original appearance at the time."

"I didn't notice at all..." Kogoro said stupidly.

"So the wall of the Motomachi room is actually a gas lamp!"

"Then what was the cause of the explosion?" Takagi asked.

"It's gas."

"There is no smell of gas?" Mugure immediately questioned.

"Liquefied petroleum gas has no taste." Dongma reminded with a smile.

Because the gas itself has no odor, the smell we usually smell is made by the gas company in order to let ordinary people detect the gas leak in the first time, and the murderer only needs to get the odorless gas directly from the manufacturer and mix it with elderberry. After the smell, even Dongma can't smell it...

"According to the gas company's testimony, two bottles were indeed stolen, but it was only reported on TV." Mitsuhiko reported with the detective handbook in a serious manner, "Moreover, there are traces of the gas pipe being dug out in the hotel's inner courtyard."

"Just inject gas while Motomachi takes a bath, but when he comes out of the bath and turns on the electric stove to burn herbal tea, the detonation is a natural result." Dongma said with a smile.

The reason why the prisoner did this was because he knew that Motomachi had a habit of drinking herbal tea after taking a bath, which was why Tsurumi sent herbs that day.

"So, what about the last Isesaki Naohide? Is the secret room in that phone booth also a gas tube?" Meguro asked anxiously.

"There should be no gas tube in the building where Naohide lives, so the criminal decided to take him to a place where there is a gas tube, which is the telephone booth. So the murderer poured civilian gas into it, and then just waited to detonate it. That's it." Dongma explained in a leisurely manner.

"This gas was indeed detected at the scene, but you have heard the police chief. People from the gas company said that there are no pipelines under the park 1.5..." Mumu tried to retort.

But then Dongma pointed to the design drawing again, "However, on this design drawing, I walked about 50 meters along the old gas pipeline in the park. There is actually a civil gas pipeline in a building, which is injected there. Civil gas is fine."

"What the prisoner has to do next is very simple, lie there, wait for Zhixiu to appear, then dial the public phone and let him in, because the door lock mechanism prevents him from getting out, then use a fire-resistant gas tube to stuff it under the phone booth for The airy space burned him cruelly!"

Dongma's reasoning made everyone feel a horror, and Mugure and Takagi also blamed themselves for so many missing clues.

Chapter 1238 The Tenth of Jiang Shenyuan's Witch (the true face of the Witch)

PS1: Thank you for the support of the five monthly tickets of "195773332".

PS2: Tanabata Ten is over!Book friends who finished the appointment at night, remember to subscribe~~~

"But it's no wonder that you will ignore. Living in a modern city like Tokyo, you will always ignore some of the older things more or less." Dongma shook his head and said.

"But you found out, Sir Chief Police Officer..." Takagi said frustratedly.

"That's because of a small piece of rust on the threatening letter!" Dongma explained with a smile.

"The metal rust residue, I remember it also appeared in the basement of Mr. Motomachi...Ah! Could it be the rust in the gas pipe?" Mugure cried out in surprise.

"Yes! Old gas pipes are naturally made of iron. When a murderer digs a gas pipe, his hands and clothes will naturally get a lot of rust on his hands and clothes. Such rust fines, no matter how careful people are It was cleaned up, so it naturally fell on the letter when I wrote a letter later." Dongma nodded and explained.

Dongma then added 11, "The reason why there is no secret room in the hotel is probably because it was blown away by the explosive wind, and the phone booth was burned down."

Everyone was stunned, and at the same time absorbed the reasoning Dongma said.

"The first incident in the beginning, the attack on Lawyer Miura, was actually based on the same reason as the Naohide incident. Because his law firm was built some time before the station, which means there is no gas pipeline. , So the murderer can only do something in the foreign cemetery."

"So, who is the prisoner?" Mumu asked through gritted teeth.

"Walking along the old gas pipeline in the park, you can directly enter the church church, and in the courtyard of the church, we also found traces of being dug!" Said Takeda was speaking this time.

And Hui Wei, as always, echoed: "Church! Church!"

"Sakuragi, the murderer of this series of events is you!" Dongma shouted coldly.

"How come?!" Tsurumi looked at the priest beside him in surprise.

"There is a lot of evidence..." Bu Mei said sadly.

"First of all, the only external person who has been to the hotel library recently is Father Sakuragi."

"First he made Motomachi a believer in the church, and then went in to investigate the situation under the pretext of exorcising evil spirits with holy water. It was probably at that time that he learned of Motomachi's habit of drinking herbal tea after bathing. And a week ago, someone witnessed it. The priest went to Toda House, that time should be the time to arrange the organs." Ito Xiaohui looked at Sakuragi contemptuously.

"The clothes and terrorist masks he was wearing when he attacked Miura's lawyers were also found in the church warehouse. In the same warehouse, there are also instruments for checking the number of public telephone booths. Naturally, there are tools such as shovel, and they only need to be tested. A quick glance at the dirt on it will confirm that excavation has been carried out there." Sister Takeda also said to you and me as if you were alone.

"After that, I also asked the European churches. There was indeed an Asian church worker named Sakuragi Ko, but it was only a worker. Because a bishop saw you pitifully letting you work in the church, but you Eavesdropping on the sins of the believers when they confessed, and blackmailed them, so they were expelled by the church in Europe!" Xiao Ai said coldly.

"Ha... I was really discovered by you!" Sakuragi let out a voice that didn't know if it was a mockery or a wry smile.