Sherlock and John exchanged glances uneasily.
"John, I find myself honestly baffled by this situation. But I think I can make one definite deduction- we're dealing with a madman." Sherlock whispered to John as they trailed behind the now wandering off Doctor.
The Doctor headed for the building that lay on the island, further from the coast, in hopes that it would offer some information on why he had needed to be there on that exact date.
"Isn't the Bermuda triangle mostly just sea?" Clara asked, "What's that whole building over there doing?"
"It's a perception filter, except the TARDIS has brought us inside it. To everyone beyond the coast, I'd presume the island does not exist." The Doctor explained.
"A perception filter?" John repeated.
"Yes, it shifts your perception so whatever the filter is protecting or covering goes unnoticed. It's all still there but not seen by people who don't pay very close attention. There's a trick, even for high-ish level filters. You look with the side of your eye." The Doctor said.
"So we're invisible?" Sherlock asked to clarify.
"No. Yes. Not exactly but let's go with that anyway."
The Doctor pulled his sonic screwdriver out and began scanning the entrance to the door, looking for a way to get in. The door didn't budge.
"That's weird. This usually works." The Doctor mumbled.
Clara stepped forward and gave the door a slight push. It opened easily, almost welcoming.
"You can't unlock an unlocked door, Doctor," Clara said, with a hint of exasperation in her tone.
"What's that?" John asked.
"John, given the obviously infinite knowledge we lack in these situations I think it best not to ask so many questions for now," Sherlock said.
"Don't be silly, I love questions!" the Doctor chirped, "It's a sonic screwdriver! Very high tech. Scientific instrument. Does basically everything. Except on wood."
John paused for a moment, then shook his head and continued walking.
They walked down a brightly lit hallway, with no pictures or tables or chairs or buttons. It was just a long hallway, painted white in impossible evenness, with a room on the end of it. It stood out mostly because mostly because it wasn't white- it was more of a reddish colour.
"How long is this hallway?" complained Clara.
"It seems to be never ending" John agreed.
"No," Sherlock disagreed.
"No?" The other three replied in unison.
"No. We are moving, but so is the ground. I made a mark here with my pen and it's been beside me for two minutes and 47 seconds now. It's moving at exactly the same pace as each singular one of us. Is that possible, Doctor? Is this another 'high tech' thing?" Sherlock said with a bit of pleasure, happy he managed to deduce something.
"Not that I've seen, I think," the Doctor said, deep in thought, "But I think you're right. Actually I'm almost absolutely certain you are. To be very clear you are completely, one hundred and 38 percent correct."
"Whoever built this building never wanted people to reach the other end," Sherlock said.
"Whoever built this building is of a species that is very advanced." the Doctor contributed.
"Whoever built it wanted us away from the island and forest. Anyone in the island or forest would have decided they might find shelter here."
"They must have wanted to isolate us from the outside."
"You mean they trapped us," Sherlock said in a slow voice.
"I think so."
"But what would any species possibly want from humans in this place? We don't carry much, besides our lives, which they can find more bountifully outside the island."
"Yes it's unlikely that a species would attack or trap another for no reason."
"It's something that every human has, then, no matter who you are."
"Yes, but what do-" The Doctor stopped in his tracks. His face drained of colour and shock registered in his eyes. His mouth formed a small 'O'. For the first time, Sherlock and John had seen the Doctor looking properly scared. It made them feel fear too, though they were not sure why. It made Clara feel absolutely terrified and she knew exactly why. The Doctor wasn't one to be scared, having had so many experiences. Hence whatever had made his face show that horrible expression must be something absolutely, positively horrifying.
The three of them had stood around him, waiting for a response.
Finally he spoke.
"Time. We have time."
