The Doctor wasn't tired, though he wished he could sleep. He sat, leaning up against the cave wall next to Jack's regrowing form beneath his coat. It was getting dark over the treetops, and he didn't know how long the dark would last. He thought, for a moment, about creating a fire, something to keep Jack warm and keep the creatures from the forest out. But, more likely, it would just attract them to their makeshift encampment.

And the Doctor had to protect him. Somehow. Fat lot of good he'd been since they got here. No idea where they were or what was chasing them, up to the point where it ripped Jack in half.

Jack had been lying comatose for a very long time, so when Jack thrashed out, he was more startled than he possibly should have been. He caught Jack's hand and lowered it back to his chest.

"It's all right. I'm here."