They talked about politics, books movies, and found that they had a lot in common. She didn't know why, but she trusted the Doctor, even though she barely knew him.

"So, what about your ship? You're probably not human, since we don't have the kind of power to create a 4th dimension." She smiled

"And you're probably very clever! Why haven't I heard of you, Kate?" the Doctor asked, intrigued.

"I mainly work by myself; I guess" she chuckled "Now, why haven't I heard of you? You have a quite amazing ship back there!"

"Yeah, we've been together for so long… my old mate." He laughed "Do you know what TARDIS stands for?"

"No, tell me" she jumped.

"Time And Relative Dimensions In Space, cool isn't it?" he smiled excited

"Is it… a time machine? How did you find a way to support a time vortex? I've tried to find a structure that would contain such amazing power, but I couldn't find it anywhere!" she was absolutely amused. She jumped around, messing her hair "It's possible! I knew it! They laughed at me, but I knew it!"

"Wait… you're not supposed to have that kind of knowledge. Well, not yet! But you are far too clever for a human… Are you human, Kate?" he starred into her eyes closely, and then bent over to hear her heart. One single heart.

"Yes, of course I am!" she responded "How couldn't I be human. Well, you're probably not human, and you look… human."

"No, you look Time Lord." He was still looking at her, without blinking "Tell me where are you from, Kate? What were your parents' names?"

"I'm from Brazil, my mom's name is Isabel, and my father's name is William" she was confused "why do you ask?"

"Do you have any old belongings, a family object, a fob watch maybe?"

"Yes I do, an old locket, why?"

"Have you ever opened it? Even tried?"

"No, why do you ask? You are scaring me, Doctor."

"Can I… se it, please?" the Doctor was anxious

"Okay…" she said, while pulling an old locket from under her shirt, and taking it off.

"Open it" The Doctor said.

"Why would I do that? It's just an old locket!"

"And you don't even want to know who is in there? You have no urge to see what's inside?"

"No!"

"Open it."

"Fine!"

She tried a couple of times before she could finally open it. But when she did, something happened. Lots of things happened, actually. First, a huge wave of energy just started to emerge from the tiny locket, going straight to Kate. Then, she passed out. And maybe, the most interesting thing is that the TARDIS just appeared out of nowhere.