When you run with the Doctor it feels like it will never end, but however hard you try, you can't run forever. Everybody knows that everybody dies, and nobody knows it like the Doctor, but I do think that all the skies of all the worlds might just turn dark, if he ever, for one moment, accepts it.

River stood in the middle of a large lawn wearing a long white dress. Moments before she had plugged herself into the data core of the library computer, and died. Was this heaven?

She realized this was probably not the case when Cal, the girl she had seen in the library computer, came walking towards her. Next to her was Dr. Moon.

"It's okay," she said to River. "You're safe. You'll always be safe here. The Doctor fixed the data core."

River understood what had happened now. The Doctor had saved her. But how?

"This is a good place now," Cal continued, "but I was worried you might be lonely, so I brought you some friends. Aren't I a clever girl?"

"Aren't we all?" A familiar voice said from behind River.

River turned to see who the speaker was, and was astonished to see all of her friends from the library walking towards her.

"Oh for heaven's sake," she said softly, "He just can't do it, can he? That man- that impossible man. He just can't give in!"

River ran to greet them. She could live happily in this simulated world with all of her friends! Except, of course, for one. But that was alright. She understood why that could never be.

Behind her Cal and Dr. Moon looked at each other as if they still knew something that River didn't.

"That's not all," Cal hollered. "There's someone inside waiting for you."

She pointed to the large house across the lawn. River looked blankly towards it.

"Who could that possibly be? No one else came to the library with us," she thought. "What has the Doctor done now?"

River went into the building alone, and hurried through the corridor, anxious to see who it was.

"Hi, honey, I'm home."

River's heart skipped a beat as she turned around to see the Doctor, her Doctor, standing there in his black suit and top hat, looking exactly as he had at the singing towers of Darillium.

"How..?" River gasped.

"The sonic. It had a neural relay indicator in it. It saved you, and apparently me too."

"It saved you? How?"

"That sonic was mine before it was yours," The Doctor explained, "and it automatically saves its owner on departure. The moment we separated after our night at Darillium, it saved a copy of me, just in case. Now here we are, together."

"But you- are you… real?"

"As real as you are. We're just copies of ourselves, but we're exact copies."

River sniffled, in an attempt to hold back the tears, but she couldn't help herself. The Doctor hugged her as she cried tears of joy on his shoulder.

"Oh, Doctor," she sighed. "My Doctor. You really can't give in."

Everybody knows that everybody dies, but not every day. Not today. Some days are so special- some days are so, so blessed. Some days nobody dies at all. Now and then, every once in a very long while, every day in a million days, when the wind stands fair and the Doctor comes to call… everybody lives.