"Her credentials are inside." Kate said as the Doctor continued to stare down at the envelope.
As the Doctor slid his finger under the flap of the envelope, Kate raised her hand.
"No, Doctor," She pointed over her shoulder at the National Gallery behind her "Inside." Without saying a word, the Doctor headed towards the gallery. Clara strode quickly to catch up with him.
"Who is getting the blame for this one?" Aderyn asked, looking back at the TARDIS.
"Derren Brown." Osgood said.
"Again?" Aderyn asked, looking round at her.
"We sent him flowers." Kate added before following the Doctor.
The Doctor waited outside the gallery, jiggling his leg nervously and looking up at the building.
"Did you know her, Elizabeth the First?" Clara asked.
"Unified Intelligence Task Force." The Doctor sighed.
"Sorry?" Clara frowned.
The Doctor jabbed his thumb over his shoulder at Kate, Osgood and the UNIT soldiers. "This lot. UNIT. They investigate alien stuff. Anything alien."
"What, like you?"
The Doctor smiled smugly "I work for them."
Clara raised an eyebrow at him "You have a job?"
"Why shouldn't I have a job? I'd be brilliant at having a job." The Doctor said indignantly.
"You don't have a job." Clara muttered quietly as Kate caught up with them and pulled open the door. They followed Kate and Osgood through the gallery.
"I do have a job. This is my job. I'm doing it now." The Doctor said.
"You never have a job." Clara muttered.
"I do. I do." The Doctor protested.
Kate led them into a large room that contained only one painting, hidden beneath a large cloth. She pulled the cloth from the painting and Clara stared at it open mouthed. It was a beautiful painting of a haunting scene. An alien Citadel that was on fire and clearly under attack.
"Elizabeth's credentials." Kate declared.
Aderyn strode forward until she was directly in front of the painting "But that's not possible. Doctor, I've seen this painting before, in one of those books you gave me. This can't be..." She breathed.
"No More." The Doctor said.
"That's the title." Kate said.
"I know the title." The Doctor snapped.
"Also known as Gallifrey Falls." Aderyn muttered.
"This painting doesn't belong here. In this time or place." The Doctor said.
"Obviously." Clara said.
The Doctor shook his head "It's the fall of Arcadia, Gallifrey's second city."
Clara walked towards the painting. Something about it, other then the subject matter, caught her eye "But how is it doing that? How is that possible? It's an oil painting in 3D."
"Gallifreyans are cool." Aderyn shrugged.
"Were," The Doctor corrected "Time Lord art. Bigger on the inside. A slice of real time, frozen."
"Elizabeth told us where to find it, and it's significance." Kate said.
"Are you okay?" Aderyn asked, looking round at the Doctor, who seemed reluctant to get too close to the painting.
"He was there." The Doctor said in a whisper.
"Who?" Aderyn asked.
"Me. The other me. The one I don't talk about."
"I don't understand." Clara said.
The Doctor ran his hands through his hair "I've had many faces, many lives. I don't admit to all of them. There's one life I've tried very hard to forget. He was the Doctor who fought in the Time War, and that was the day he did it. The day I did it. The day he killed them all. The last day of the Time War. The war to end all wars between my people and the Daleks. And in that battle there was a man with more blood on his hands than any other, a man who would commit a crime that would silence the universe. And that man was me."
As the Doctor stared at the painting, he remembered. He remembered that awful day.
All those years ago, back when Gallifrey had still been standing, but under attack from the Dalek fleets, Arcadia fell. The Doctor, as he had been then, stepped out of the TARDIS and approached a Gallifreyan soldier.
"I'm going to need your gun."
The stunned soldier handed it over, somewhat reluctantly. The Doctor turned to a wall and let loose a constant stream of gunfire. He shoulder the gun at looked at the words etched into the concrete. No More.
The TARDIS spun and crashed through a wall, knocking over Daleks and smashing them to pieces.
The Daleks found the words the Doctor had left behind.
"What are these words? Explain. Explain." A Dalek said.