The Doctor's immediate response is a sharp, matter-of-fact, "No, you're not."

Rose bites her lip, unsure what to make of that. Time lords? Could there be some left?

Lara scoffs at the Doctor's reply. "Well, excuse me. Wasn't aware you knew so much about me."

"The thing is, though," the Doctor scratches the back of his neck anxiously, "I am very much accustomed to the world in which each and every time lord is dead. You being time lords disputes that a bit."

"Dead?" Lara repeats. "Are you referring to the fall of Gallifrey?"

"Yep, that's the one," the Doctor confirms, voice squeaking a bit. "That planet with all the time lords on it. It's a bit gone. I would know."

"Apparently not," Lara disputes. "We're time lords. Want me to prove it?"

The Doctor doesn't answer for a long time. The pause becomes so lengthy, Rose nudges him in the ribs.

"Yeahhhh," the Doctor drawls.

"Follow me then, Mister Skeptic," Lara beckons with her head. She turns, her ponytail swishing behind her. The Doctor and Rose trot obediently after her. The Doctor's mind is distracted, but Rose's takes a moment to examine their surroundings. She hadn't expected another TARDIS trip. She takes the time to appreciate it.

But Restituo doesn't have much to appreciate. Lara was right. It's not a tourist planet. It's square buildings and neatly trimmed plants and concrete, or some space equivalent.

The pair follows Lara into one of the grey squares of architecture, bypassing some bored-looking security personnel who nod to Lara as she passes.

"You've certainly decided to trust us quickly," the Doctor notices as he brushes past on of the guards.

"This is a hospital," Lara replies without looking behind her. "Going to steal a coma patient, are you?"

The Doctor scowls. "Why are we in a hospital?"

"Hey, Dale!" Lara calls to a man seated at a counter. "Any x-rays happening right now?"

"Broken ribs three rooms down the hall to your left," Dale replies, as bored as the security detail.

"Wonderful," Lara nods. "Well, not for whoever broke their ribs, of course. Thanks, Dale."

Dale shrugs as Lara trots off toward the room. She's a peg more cheerful than anyone the Doctor and Rose have come across. The Doctor smiles at the concept. He likes this girl.

Lara clutches the door frame of the appropriate room and swings inside. A doctor and starkly pale shirtless patient turn in surprise to face her.

"Hey there," Lara smiles. She pulls the front of her shirt forward where a gold badge sits pinned to the red cloth. "Lara Oswald. Chief of Intergalactic and Time-Crossing Affairs. May I take a look at your internal organs?"

The pale boy crosses his arms over his white chest in embarrassment. "Uhh…sure."

"X-ray, please," Lara beckons, putting out her palm.

The doctor, the medical kind, hesitantly hands her a translucent sheet he had been examining. Lara thanks him and holds it up for the Doctor and Rose to see.

"This boy is a regular, old Restituo resident, correct?" Lara inquires.

"Oh, don't say regular," the Doctor chastises gently, peering at the sheet. He's about to go on about the vague meaning of regularity and how it shouldn't be something to strive for, but the sight of the x-ray stops him.

He can barely see it without a backlight, but he knows what he sees. Faintly, he makes out the patient's two broken ribs right over his heart.

And the unharmed ribs above his other heart.

He has two of them.

"Two hearts," Rose says aloud. "Does that mean . . .?"

The Doctor doesn't move. His gaze lifts to the three residents of the planet, then falls back to the telltale image, then lifts and falls again. The hope he feels blooming in his gut he squanders before it becomes too predominant.

"What are you?" he thinks to ask.

"We are what we look like, Nameless Man," Lara says.

"I told you, I'm the Doctor," he says, still skeptical. "If you're from Gallifrey, why don't you know who I am?"

"Geez, aren't you cocky?" Lara scoffs. "Besides, I said we were time lords. I didn't say we were from Gallifrey."

"Was there no time war here?" the Doctor asks. "No massive galactic battle that someone called the Doctor put an end to?"

"If it was on Gallifrey, we don't know about it," Lara says. "We just know that one of our agents reported it missing a while back. Nothing more."

"Well, then you're kind of rubbish at being Chief of Intergalactic and Time-Crossing Affairs," the Doctor snaps.

"Doctor!" Rose reprimands.

Lara narrows her eyes. "All that this society knows about time lords is that we are time lords. It's kind of obvious with the two-hearts thing. The first pilgrims of Restituo are too dead to tell us much more than that."

The Doctor looks like he's about to say something rude again, but a look from Rose and he thinks better of it. He walks from the door frame, running a hand down his face as he lumbers down the hallway.

"You alright?" Rose calls after him.

"Yeah, fine," the Doctor calls back automatically. "I just . . . I don't know what to do with this."

Rose trots up beside him. "Who says you have to do anything? They exist and you exist. Can't you just both go on that way?"

"I have spent quite some time under the impression that I was the last of my kind," the Doctor explains. "This has been disputed from time to time, but never on this scale. Never on a planet-sized scale."

"Is that so bad?" Rose offers. "To find your people again?"

"They're not my people," the Doctor says quietly. "Not my version, anyway. We just have similar organ counts. Or, well, I guess we don't even share that."

Rose pouts at the Doctor's obvious confusion. She reaches for his hand, clasps it in her own. His face is downturned, but she sees him smiles to himself at the gesture.

"I'm not Spaceman anymore, I s'pose," the Doctor contemplates.

Rose plays along. "What's that mean?"

"It's something Donna used to call me."

"Who's that?"

"Donna? You know Donna."

Rose frowns doubtfully. "You sure? Doesn't ring any bells."

The Doctor offers a frown of his own. He pulls back to examine Rose's face, and he sees genuine confusion painted across her features.

"You've met Donna," the Doctor reminds her. "Donna Noble. We argued about her today."

"I'm sorry, I don't—"

And that's when the hospital explodes.