The world of Type-Moon starts with saving Altria!

"It's called the Clock Tower after all, isn't it?"

This is a technique of working backwards from later memories to the present.

Even singularities can be considered in this way!

"Big Ben?"

Holmes came to the window of the room as if he remembered something. He didn't care that the fog outside was still full of lethality, and looked into the distance like the most simple detective.

What caught his green eyes was the landmark building of the London district, Big Ben.

"I see—I understand!"

Holmes seemed to have realized something.

He turned around and shouted to his assistant Gray:

"Gray, go get me the phone book downstairs!"

"Eh?!"

Although she didn't know why Holmes suddenly got so excited, just by seeing him showing this rare expression, Grey knew that this was definitely not the time for her to question him.

"Yes! I'm going now!"

Pat pat pat——

The girl's shoes rubbed against the stairs, making a series of noises.

Soon, she returned to the crowd holding a thick phone book.

This is a special way of communication in this era.

Every household has its own corresponding phone number. Only by knowing it can they find each other without leaving home.

but--

It doesn't seem to be what Holmes has in mind.

He took the phone book from Gray's hand and began to look through it quickly, as if he was afraid of missing any clues.

soon--

The famous detective paused.

His expression was also much more relaxed than before.

Obviously, this is the result of discovering something.

"I see--"

"Everyone," Holmes turned around and looked at the people still in 221B Baker Street, "I think I have a rough idea of what is going on."

"..."

Holmes' words were naturally extremely surprising.

After all, he was still struggling to figure out what Ian said just a second ago, but now he seemed to understand everything.

But for Ian, it was no big deal.

He often does this.

This is the result of suddenly realizing the truth of a fact at a certain moment.

To put it simply—

It's probably the scene of "electric shock".

"Then please tell me quickly." Ian said directly to the point.

He knew that as a great detective, Sherlock Holmes preferred to keep people in suspense. If he didn't urge him a little like this, he might not know the answer to the mystery until noon.

And this is indeed the case.

"Okay, my friend."

The great detective Sherlock Holmes closed the window of the room, then returned to the board and marked a point.

That's where Big Ben is located in the London neighborhood.

"If everything you just said is true—and in fact it can only be true, after all, in London at this moment, the only thing that can be confirmed is its existence."

"Then this organization must be connected to Big Ben, right?"

"That's true." Ian nodded. "But this is what I just said, Holmes."

"Don't worry, my friend."

The great detective continued to operate on the map.

He drew a fairly standard circle with Big Ben as the center and his thumb and index finger as the radius.

"If we calculate based on the field of view—"

"These are probably the only buildings where Big Ben can be seen in foggy weather like this."

"..."

Ian suddenly understood why Holmes had risked being attacked by the fog to open the window.

He was confirming the approximate range of vision by using 221B Baker Street where he was!

Now that it has been confirmed that the clock tower is an organization closely related to Big Ben, it is naturally impossible to allow such a building to be removed from a position where it can be detected!

Ian couldn't help but once again marvel at Holmes' wisdom.

It's great to have people like this to help.

but--

Ian, who followed the train of thought, soon discovered new problems.

"Speaking of which, Holmes, even so, the range is still quite large, isn't it?"

The man glanced at the circle on the map, his expression looking a little heavy.

"You asked Gray to get a London neighborhood phone book. Is there any way to further reduce this range?"

"Hahaha~"

Holmes laughed.

"My friend, you are indeed well suited to be a detective."

"It's truly admirable that they've understood this without me having to explain anything."

"That's right." The great detective picked up the phone book that Gray had just brought over. It was as thick as a brick.

"That's really the good stuff that cuts down on the scope of the investigation."

"Imagine this, everyone."

Holmes's eyes swept over everyone present, filled with wisdom that belonged only to him.

"If Clock Tower is an organization that requires extreme secrecy, what's the best way to disguise it in this London neighborhood?"

"It's a private house, right?"

Stheno also followed Holmes's train of thought.

"The saying 'the best way to hide a drop of water is to put it in the ocean' probably refers to this situation."

"Correct." Holmes picked up the pipe beside him and relit it.

That was the leisurely expression he would make only when he fully understood something.

"So--"

"Let's take Miss Stheno's reasoning a step further, this time applying a little common sense."

"They're hiding in a house with a view of the clock tower," Euryale replied quickly.

"Only in this way can we ensure that we can observe Big Ben while hiding our identity."

"As expected of a friend's wife." Holmes wrote Euryale's words on the board.

"Have even their reasoning abilities become similar?"

"That's right—they hid in a house with a view of the clock tower. This way they could have the best of both worlds."

"But even so, the scope is huge, right?"

Medusa frowned slightly.

Although she had no way of seeing clearly the area that Holmes had circled.

But she had a very high level of insight and could probably sense the general situation.

"Although I don't really want to pour cold water on you—"

"It's still very difficult to investigate."

"Yes." Holmes did not deny what Medusa said.

"According to common sense, it is not easy to investigate such a large area."

"But if there were a way to further reduce it, wouldn't it be different?"

"..."

At this point, Gray seemed to understand something.

"that--"

"Could it be related to the distribution of phone books?"

As soon as Gray said this, everyone's eyes turned to her.

Even Holmes was looking at her with an amused look, as if he were waiting for an answer.

This made Gray feel a little embarrassed.

After all, she was very shy, and the only person she could speak to confidently was Ian.

And at this moment, the man's voice sounded at the right time.

"It's fine."

"Tell me what you know—even if it's wrong."

"No one present here will blame you."

"..."

Ian's words gave Grey some confidence.

She nodded, and then began to express her thoughts:

"that--"

"The phone book is organized by last name."

"I'm thinking, since this is an organization related to Big Ben, they must be very concerned about issues of order and faith, right?"

"In this case... maybe a series of phone numbers will be arranged in a very obvious way."

"..."

Gray's words didn't really sound like reasoning, but more like inferences based on her own experience.

After all, the village of Brakmoya where she came from was, in a sense, just like the Clock Tower, maintaining stability within the village with a certain fanatical order.

but--

Advice based on experience is not necessarily wrong.

Holmes quickly showed everyone the pages he had just read.

Without exception, all the phone numbers above were registered using the same name - that was not the same surname, but the real, identical name!

"They seem to be unexpectedly active in places that people don't notice," said the great detective.

"but--"

Holmes took out the blue pill made by Gray from the drawer. It was a magical prop that could protect people like him from harm in this kind of weather.

"Inference is just inference after all."