A/N: By the way, if you have a guess as for what D L Rose means or what Rose's doodle was a picture of, put it in a review! Let's see what's going to befall our brave young heroine now...

Rose didn't even look at the paper in her hand until she reached the library. When she did glance down, she understood why he'd had to write down the title. It was in another language! She shook her head in dismay. Where did that come in the alphabet? How could she find the book?

"TARDIS," she asked in dismay, "can you tell me how to find this book?"

The lights flickered. Rose took that as a no. She began walking through the aisles of books, very slowly, reading each one carefully. The lights continued to flicker. "What's wrong, girl?"

The TARDIS didn't answer. Of course she didn't, she couldn't talk. Rose shook herself for being so stupid and kept walking. It was very hard to read all the titles when the lights kept flashing. "Could you please keep the lights on, TARDIS?"

The lights began to stay dark for longer and light more briefly. It was hopeless to try and get the book when she could barely see. She ran back to the central control room, more than a little worried.

She was right outside it when the lights went completely dark.

Silence fell. Rose swallowed, hard. She had never heard silence before, not true silence. Even out here, in the TARDIS, with the engines shut off, there were background noises—the oxygenization mechanism so they could breathe, the gravity control—but now there was nothing.

Oh, God, Rose thought, barely daring to breathe. The ship was huge, and most of the doors should be open, but even so, she knew the air in here wasn't unlimited. Oh, God, we're in such big trouble.

"Think, Rose," she whispered. "Calm down. Just calm down..." She made a quick mental list of priorities. Make sure the Doctor's alright, get tools—I'd better see if I can borrow his screwdriver, try and fix the TARDIS, then get his book. I wish the TARDIS had something for my headache, but I doubt there's anything...She ran through the list to make sure it was in order, and was almost surprised to find that she'd gotten it exactly in order of importance.

She ran to the Doctor's room, fast enough to get there quickly, but just slow enough to keep her breathing normal. "Doctor, are you alright?"

"What happened to all the lights?"

"All the power's out on the TARDIS," she said, "and I mean all of it." She jumped in the air and put her hands on the door frame, then pulled them back in. She stayed in midair, her legs curled up under her. "I'm floating. It's bizarre. There's no gravity, no—anything."

"No air," finished the Doctor, and Rose winced at the flatness of his voice. "This is it."

"No, it is not bloody well it!" she snapped suddenly. "Go to sleep, and I'll fix this."

"But, Rose, l-light's-going-to-be-necessary-to-fix-the-TARDIS."

"I know," she said, biting back a sigh. "I'm not stupid. Where's your screwdriver?" There was a click, the high sound of a sonic tool, and a blue light appeared, illuminating his face. She flinched backwards. He looked awful in the pale glow. She took the screwdriver and whispered, "Thanks."

Five minutes later, she was under the central console, holding down the button of the sonic screwdriver with her teeth, and trying to find out what was wrong. She had no idea what it might be. After looking at everything twice, she decided to ask the Doctor what might do this and where she'd have to look. As she scooted backwards, she heard a voice call her name. "Rose? Rose, I have a question..." As the Doctor stopped speaking, she could also hear a rhythmic rattling sound.

"Yes?"

"D'you think death by suffocation is painful?"

She took the screwdriver out of her mouth, pointed it forwards, and emerged with it pointing straight at him. "What's that noise?"

He looked up at her, his dark eyes glowing eerily in the blue light. "What noise?"

"That rattling. And we're not going to suffocate."

"I know. But do you think it would be painful? And I didn't hear any rattling."

She looked at him suspiciously, and noticed both of his hands were behind his back. "You did, too. You've got something behind your back. I suppose it would probably be rather uncomfortable, yes. Show me your hands."

He held out both hands. "See? Clean."

She gave him her best glare, which she was afraid wasn't very good. "Stand up and keep both of your hands out."

He did. "I've got nothing," he insisted.

"Step aside."

His shoulders slumped, and he did. She pointed the screwdriver at the box on the floor behind where he'd been standing. "What's that?"

"A box."

"Don't waste air," she said. "What is it?"

"A box! I've just told you, it's just a box!" He stepped back in front of her and kicked the box back against the wall.

Rose lunged for it and grabbed it. After barely glancing at it, she threw it halfway across the control room and it clattered into the compartment under the console. She stepped over to stop him from going after it. "You are in big trouble. Go back to bed. Sleep. Now."

"But I'm not tired!"

"You sound like a whiny little boy. Go to your room!"

"Serve you right if the air ran out now."

"I'm not trying to be cute, and I'm not trying to be funny. And that's neither cute nor funny, either. Go to your room."

His head dropped in defeat, and he shuffled off to his room. Rose climbed back down into the crawlspace. She found the box and stuffed it in her pocket, then began hunting for the problem again. Personally, she thought that her head would be clearer if she didn't have a headache herself, and if she wasn't worried about lack of air.

A/N: Poor Rose! Trapped in the TARDIS with air running out and no idea what to do! What do you think was in the box? Can she fix the TARDIS? Like it? Dislike it? Review!