"We're here to see Dr. Grace Holloway," the Doctor said, once he got the attention of one of the nurses at the station. The nurse was staring at the three as if she'd never seen an odder group. Behind the Doctor were Amy and Rory, Roy looking confused and worried and Amy looking excited to be on another adventure.

"She's on duty today. I'll send a message," the nurse said.

"It's very important that I speak to her, ma'am, the Doctor said, adjusting his bowtie. "Tell her that Dr. Bowman's here to see her."

The nurse sighed and picked up the phone. "Dr. Holloway to the nurses' station. Dr. Holloway. A Dr. Bowman is here to see you." She turned back to the three. "She'll be down soon."

"Thank you, Carol!" The Doctor said, reading her nametag. "Come along, Ponds, I see some magazines." They sat down in one of the nearby waiting rooms. Amy chose a travel magazine, Rory an outdated issue of Time, and the Doctor found an issue of Highlights for Children.

"So... Dr. Bowman." Amy didn't look up from the article about Michigan, land of enchantment.

"Grace had to introduce me to someone once, so she called me Dr. Bowman. She'll remember. Easier than saying the Doctor was looking for her when you're in a hospital."

"How did you meet Grace?" Rory asked.

"Yeah, Doctor," said Amy, peering over the magazine. "You haven't explained that."

"New Year's, 1999. I was having some trouble with the TARDIS, and it landed here. I met Grace, and she helped me track down the Master. Then we went our separate ways."

"Who's the Master?" Rory asked.

Another Time Lord..." the Doctor replied. He glanced away, just in time to see a red haired woman going up to the nurses' station. The Doctor jumped up and ran to her.

"Doctor!"

The woman turned around and stared at him. "...Doctor?" She asked.

The Doctor nodded. "Puccini," he whispered.

"It is you!" They hugged, old friends reunited. The Doctor looked up and gestured for Amy and Rory to come over to them.

"Amy, Rory, I'd like to introduce you to my friend Dr. Grace Holloway. She's a cardiologist and the doctor who saved me."

"Oh, I didn't save you," Grace replied, the Doctor's arm still around her shoulders. "You can let me go now, Doctor."

"Oh yes." The Doctor let her go. "She did save me. She held back death that day. Grace, these are my friends the Ponds, Amy and Rory. Amy's a travel writer and Rory's a nurse."

Grace shook their hands. "A nurse, Mr. Pond? What do you work in?"

"Just an RN, Doctor," Rory replied. "Comes in handy, though, running with the Doctor."

"I can imagine it would!" Grace said with a laugh. "It's not exactly safe."

"He keeps us on our toes, the Doctor," Amy said.

"Are you too married?"

"Yeah, the Doctor's our chaperone," Amy said with a grin. "Takes us to all the best places for dates."

"Don't go dragging up last week's incident with the Zygons," the Doctor said. "So Grace, what was it you needed my help with?"

"Come with me. I have the x-rays in my office."

-

"The hospital's redecorated," the Doctor observed. "I don't like it."

"It's not the same hospital," Grace said. "I quit, remember? Someone gave this hospital a favorable reference for me, and they asked me to start working for them."

"Are you happy here?" The Doctor asked as they walked into the office with an important-looking sign on the door that said "Dr. Grace Holloway, Cardiology."

"I am. Better boss. They wanted me to do admin work, but I refused." Grace sat down at her desk, telling the three companions to make themselves at home. "I have the medical charts and x-rays here," she said, handing the Doctor an envelope. "See what you make of them."

The Doctor opened the files. "Two hearts, slow heartbeat, low body temperature, self-confidence coma, wakes up, then falls asleep," Grace said, rummaging around in a drawer. "And I had hematology look at a sample of her blood. This is what I got." She placed a vial on her desk.

"Let me see that," Rory said. Amy passed him the vial.

"This isn't blood," Rory said. "I do venepuncture every day- this is totally not blood."

"It is," Grace said, looking over at the Doctor. "I've seen it before. I took a sample of his blood once. I didn't think it was blood either."

"So you have a girl with two hearts, weird blood, and she keeps passing out?" Amy asked. "What is she?"

"Time Lady."

They all turned to look at the Doctor, who had been silent all through the blood argument. He had been staring at the x-rays, seemingly in a trance.

"A Time Lady? A female you?" Amy seemed shocked.

"It's Gallifreyan physiology," the Doctor said. "But it's impossible. There are no Time Lords left. Just me. That were all destroyed in the Time War against the Daleks."

"You said the Master survived too," Grace said.

"He was trapped as a human with the Chameleon Arch, then reverted to Time Lord. He was lost though, sent into the Void."

Rory blinked. This was news to him. Amy took it in stride.

"So in this big universe there is no chance that there's another Time Lord off somewhere."

"Apparently there is, Doctor," Grace said.

The Doctor stared blankly at the da Vinci print across the room, a thousand years of life and death running through his head.