Amy and Rory stepped outside the TARDIS. It was early in the day and not all of the shops were open, but the street was already packed with families doing their last minute Christmas shopping. As usual, nobody seemed to notice the blue police box that had just appeared.

"If the Doctor's in the crowd somewhere, we'll never find him." Rory said, watching a little boy holding his mother's hand getting squashed in the rabble.

They stood for a few moments outside the TARDIS, just watching the people shopping and hoping to catch a glimpse of the Doctor.

Amy was about to give up and return to the TARDIS to make some kind of plan, or if that failed, to wait for River to return, when she noticed a disturbance at the other end of the street.

"What's that?" She asked, squinting through the crowd.

"Finally, it's the Doctor." Rory replied. "As soon as he arrives anywhere, there's some kind of disaster."

"No, it's not the Doctor." Amy said. "It's a man in a long coat. He's running towards... Towards us." The crowd of shoppers parted, as the man sprinted towards the TARDIS.

"Look out!" Amy yelled, as the man hurled himself at Rory, pressing him up against the police box in a huge hug.

"Doctor! It's great to see you. You've regenerated again!" He said in an American accent, giving Rory a huge grin and ruffling his hair. "I like it."

"Er, I'm not-" Rory began, but the man took no notice of him.

"And who's this lovely lady?" He turned his charming smile on Amy. Although she'd never seen him before, she was already starting to like him.

"Amy Pond." She replied, shaking his outstretched hand.

"So, how are you doing?" The man continued, oblivious to Rory's discomfort. "I meant to ask you, that 'Prisoner zero' thing with all the TVs and radios, was that you? I turned on the TV and just went, 'I bet that's something to do with the Doctor.'"

"I'm not the Doctor..." Rory finally managed to say. There was an awkward pause.

"Oh. I'm sorry." The man said. He looked crushed. "I thought you were somebody I knew." He looked longingly at the TARDIS, then started to walk off into the crowd.

"Stop," Amy shouted, running after him. She had only gone a few paces when Rory stopped her.

"What are you doing?" He asked.

"Think about it." Amy replied, turning to face him. "He knows the Doctor, so maybe he can help us find him." She turned back to the street, but the man had vanished into the crowd.

"We'll never see him now." Amy sighed. All of the shops were open, and there were already queues forming around the most popular ones.

"Wait, I think that's his coat." Rory said, leaning to the left. "Over there."

"Come on!" Amy said, and they started to run. Getting through the crowd was a bit like swimming, she thought, squeezing past a woman with three huge shopping bags.

"Stop!" She shouted again, and the man finally turned around. Amy and Rory slowed down, out of breath.

"Hello again," The man grinned, showing perfect white teeth. He didn't seem at all surprised to see them. "Shall we get some coffee?" Without waiting for an answer, he stepped inside a Starbucks. Amy and Rory looked at each other, and then followed him.

The Doctor woke up, lying on the cold, dirty floor. His head was hurting, and he had lost his fez.

"River, have you taken my fez?" He asked groggily. There was no answer.

"Every time." The Doctor croaked, sitting up and looking around. "Every single time I wear a fez, something bad happens."

He was alone in a tiny room, the walls, floor and ceiling all made of cement. There were no windows, and he couldn't even see a door.

"Hello?" The Doctor shouted, his voice echoing around the cell. "Is anybody there?" Again, there was no answer.

"Great." He muttered, leaning back against the wall and closing his eyes.

"So, how do you know the Doctor?" Amy asked, warming her hands on her latte. They were sitting on sofas at the back of the shop.

"I travelled with him a while back." He replied. "Captain Jack Harkness. It's nice to meet you." Amy didn't know who the flirting was directed at, herself or Rory.

"We're married." Rory said quickly. "Can we just get to the point? Do you have any idea where the Doctor is?"

"No." The Captain replied. "Look, I'll tell you everything I know."

"We're listening." Amy said, sitting back in the armchair.

"I was working late," He began, "And I suddenly noticed this huge burst of energy in the middle of London. I got up the CCTV cameras, and sure enough, there was the TARDIS. I took the first train I could get, and ended up on Oxford Street, where I met you."

"A huge burst of energy?" Rory puzzled. "Do you know what caused it?"

"Well," Jack replied slowly, "There was this one time, when I was with the Doctor. It was just before the Master becoming Prime Minister."

"Who's the Master?" Amy asked. She had come to accept that the Doctor had more enemies than he could possibly tell her about, and the Master was just another one to add to the list.

"He's a time lord, like the Doctor." Jack replied.

"I thought-" Rory began.

"Yes, I know, the Doctor likes to say that he's the last of the time lords." He rolled his eyes. "All I know is that every time the Doctor defeats the Master, and it seems like he's dead or gone forever, he returns."

"It looks like this is all to do with the Master." Amy said, "But we still need to know more about the burst of energy. Do you think he caused it?"

"It looks that way." Jack mused, sipping the coffee. He screwed up his face. "This coffee is awful. Its times like these I really miss Ianto." A pensive look came over his face, and they sat in silence.

The coffee shop was very quiet, Amy thought, considering all the crowds that had been gathering on the street outside. She turned around.

"Rory, Captain Jack," Amy murmured, staring at the shop window. "The street is empty."

"What?" Rory exclaimed. Outside Starbucks, all of the people who had been shopping were gone. Nobody else seemed to have noticed, and the shop was still full of couples and families enjoying a hot drink on a cold morning.

"Come on." Jack said grimly, leading the way to the door.

"What are you doing?" Rory asked, dismayed. "If everyone's been abducted by aliens, surely we'll be safer in here."

"You're right," Jack said, stopping. "We'd be safer in here." Amy looked at him, confused.

"We would be safer." Jack told her, a smile playing on his lips. "However, we'd also be no closer to finding the Doctor. Come on!" Amy took her husband's hand and dragged him towards the door. A gust of cold air whooshed into the coffee shop, as they stepped outside.

Thank you for reading! :)

Basil Allegri, Michelle the Editor and hikarisailorcat win... A present from the Doctor's Christmas room for their lovely reviews!

Also thanks to Lectorem, uzumaki misaki, Idoloni and Spontaneouschocolaterabbits for adding this to their favourite story/story alert!

I will try to be a bit quicker to update next time, and it will be a longer chapter. You can blame the exams for the shortness of this one!