"I asked why the cracks all meet here," Wendy repeated.
"That's a good question," The Doctor mused. "Brilliant, in fact. The answer might just solve this whole problem."
"How's that?"
"All of these cracks come from Earth and converge on this island," The Doctor said to himself. "Whatever caused these cracks is either here or on Earth, but what's the connection between these two places?"
"Sorry to interrupt your thoughts," Wendy cut in, "but what sort of thing causes those cracks?"
"Usually a massive force, like an explosion. Something big enough to tear the fabric of space and time."
"Well, I don't think there are any explosions here. It must be back on Earth."
"That's the thing about temporal rifts, Wendy. Their cause can happen at any point in space or time and echo forwards or back. It doesn't need to be happening right now."
"Um… okay. Could it have been a bomb from the World War a few years back?"
"Not big enough."
"Not even an atomic bomb?"
"No, it wouldn't have reached this side of the universe. In fact, nothing should have reached this side of the universe. It would have to be a force the size of a planet."
"Like what?"
"No matter," The Doctor shrugged. "There's nothing we can do at the moment. All we can do is return these people to their proper times and close the cracks."
The Doctor and Wendy started walking again and Wendy twiddled her thumbs.
"This whole situation is really quite absurd," she said. "You say we're on the other side of the universe, and you talk about time and space, yet you still seem to know a lot about the Earth. Who are you?"
"I told you, I'm The Doctor."
"But what does that mean? Doctor of what? How do you know so much about what's happening?"
"I'm a doctor of a lot of things. A scientist, if you will. I specialize in matters of space and time."
Wendy couldn't help but scoff at his last statement.
"And where do you get a degree for that?"
"Gallifrey."
"Is that on Earth?" Wendy teased.
"No, it's my home planet."
Wendy froze.
"Y-you mean… you're an alien?" She gaped. "You look human."
"I'm a Time Lord," The Doctor explained. "We're very similar to humans, but with a few internal differences and extra abilities."
"Like, what sort of internal differences?"
The Doctor was surprised she didn't ask about his abilities first.
"I have four kidneys and two hearts."
"Good Lord! How do they all fit in there?" Wendy eyed his slim figure.
"I'm bigger on the inside," The Doctor joked. "And so is my Tardis, if you'd like to see."
"Your what?"
"My spaceship. That's where we're headed. You're welcome to come inside when we get there."
The two walked on until they reached the Tardis, where the boys were waiting impatiently. Wendy bent over laughing as soon as she saw the police box disguise.
"A police box? You travel through space in a wooden police box?"
"It's a disguise. Or it was supposed to be. The circuit broke when I landed on Earth in 1963," The Doctor explained.
Wendy glanced at The Doctor with a funny look. When he started to climb up the tree, she shouted up at him.
"Doctor, how am I going to fit in there?"
"Come see!" The Doctor hollered from inside the ship.
Wendy hesitated before climbing the tree and peering through the doors.
"It's a bit dark," she said.
"Oh, sorry!"
The Doctor flipped a switch on the console and the lights brightened. He smiled and gestured around the room like a showman.
"It's… it's huge!" Wendy squeaked.
She stepped into the Tardis and stood gaping.
"And it's tiny, too," she whispered. "How does it do that?"
"It's dimensionally transcendental."
"I see. So, you're innards are trimentally densental, too?"
"No," The Doctor laughed. "My kidneys are just really small."