A/N: Hey guys, I'm leaving the poll open for a few more days so make sure you check it out.

"Doctor, come on. We have to go. Donna will be okay, I promise you." Kari said, tugging at his hand.

"Hey, who turned out the lights? Hey, who turned out the lights?" The voice of Dave said, his figure walking between the shelves of books and towards them.

River pulled out her gun and created yet another hole in the wall. "This way, quickly. Move!" She called, as Dave continued to stalk along towards the group.

"Doctor look at me." Kari said, getting his attention away from the node that had the face of Donna, finally. "Donna is absolutely fine. Right now, I know she is safe. Trust me, yeah? I'm Kari." There was a slight grin on her face as she said that to him, knowing she was taking his lines.

The Doctor just shook his head at her, gripping her hand tightly and running in the direction that River and the rest of the expedition had disappeared off to.

"Okay, we've got a clear spot." River said, as they stepped through the wall once more and into a large room. "In, in, in! Right in the centre. In the middle of the light, quickly. Don't let your shadows cross." She warned them all, while Kari and the Doctor scanned the room with their screwdrivers. "Kari, Doctor?"

"Yup, we're on it, River." Kari called, trying to focus on what it was she was doing.

"There's no lights here. Sunset's coming. We can't stay long." River was starting to look around in a panic. "Have you found a live one?"

"Maybe." The Doctor called. "It's getting harder to tell." Kari glanced over at him when she saw the trouble he was having with his screwdriver. "What's wrong with you?" He asked it, frowning at it slightly.

"We're going to need a chicken leg. Who's got a chicken leg?" The other Dave passed River the chicken leg she had requested. "Thanks, Dave." She tossed it into the shadows, and it was nothing but bone before it even touched the ground. "Okay. Okay, we've got a hot one. Watch your feet."

"They won't attack until there's enough of them. But they've got out scent now. They're coming." The Doctor said, carrying on with his screwdriver.

Kari just rubbed her head and walked over to River. "Hey, you okay?" She asked her, putting a hand gently on her arm.

"Yes… no. Bad day, River. Really bad day." Kari replied.

"Who is he?" Other Dave asked River, nodding over towards the Doctor. "You haven't even told us. You just expect us to trust him? And what about her?" He nodded at Kari, who just rolled her eyes. "Who's she?"

"He's the Doctor." River told him.

"Am I'm Kari."

"And who is the Doctor?" Mr Lux asked, still not impressed with what had been going on and the way other people had shown up.

"The only story you'll ever tell, if you survive him." River said. Kari understood exactly what she mean, you were either on the Doctor's good side, or bad side.

"You say he's your friend, but he doesn't even know who you are." Anita chipped in, joining the conversation and making Kari feel just that little more uncomfortable.

River had sense her anxiousness. "Listen, all you need to know is this. I'd trust that man and Kari to the end of the universe. And actually, we've been." She told them all.

"He doesn't act like he trusts you." Anita pointed out.

There was a sad look on River's face as she replied. "Yeah, there's a tiny problem. He hasn't met me yet."

"But I know River inside out." Kari added. "I know her parents, I remember the day this woman was born. She's been causing trouble ever since." There was a smirk on her face.

"Exactly how old are you?" Mr Lux asked.

Her smirk didn't fade. "Wouldn't you like to know?" She said, grabbing River's hand and dragging her over towards the Doctor. "Problems, Doctor?" Kari asked him, as he continued to struggle with his sonic screwdriver.

"There's a signal coming from somewhere, interfering with it." The Doctor told her, not paying that much attention to her.

"Then use the red setting." River suggested.

"It doesn't have a red setting." Kari and the Doctor said at the same time.

"Well, use the dampers." Kari could only shake her head, she knew for a fact that it was never going to be the Doctor's screwdriver that she had. River's screwdriver was made just for her, for this time, for the Library.

"It doesn't have dampers." The Doctor told her, getting a little frustrated once again.

River just smirked at him. "It will do one day."

The Doctor just took River's screwdriver from her hand and inspected it. "So, sometime in the future, I just give you my screwdriver?" He asked her, still not completely sure he understood what was going on. He knew Kari knew her, she seemed to know her rather well from what he had seen.

"Yeah." River told him simply, smiling at him a little.

"Why would I do that?" The Doctor asked her, hoping to get a straight answer. He had worked out rather quickly that she didn't like to answer his questions.

"I didn't pluck it from your cold, dead hands, if that's what you're worried about." The woman told him.

The Doctor still wasn't convinced, and Kari was getting more and more anxious about what was going to happen next. "And I know that because…?"

"Listen to me. You've lost your friend, you're angry, I understand. But you need to be less emotional, Doctor, right now…"

Kari let out a groan. "You sound just like your mother." She mumbled, causing River to roll her eyes at her, but a smile still no her face.

"Less emotional? I'm not emotional." He certainly was, and his grip on Kari was getting tighter.

"There are six people in the room still alive. Focus on that. Dear God, you're hard work young. How do you cope, Kari?" River asked, wondering how the woman had managed to survive the Doctor for all those centuries.

Kari just shrugged at her. "Young? Who are you?" The Doctor asked once more. Kari knew what was coming next.

"Oh, for heavens sake! Look at the three of you. We're all going to die right here, and you're just squabbling like a dysfunctional family." Mr Lux shouted over to the trio.

"Doctor, one day I'm going to be someone that you and Kari trust completely, but I can't wait for you to find that out. So I'm going to prove it to you. And I'm sorry. I'm really very sorry." River leaned in closer to the Doctor, whispering something in his ear. Kari wondered if it was the same thing as in the original time line.

The Doctor stood there in shock before turning and facing Kari. He pulled her right up against him and held her tightly. "Are we good?" River asked him, as he buried his face in Kari's hair. "Doctor, are we good?"

He let out a long breath and looked up at River. "Yeah, we're good." He whispered.

River smiled at him a little. "Good." She said, before taking her screwdriver back from him.

The Doctor then kissed the top of Kari's head, before going straight back into save the world mode. "Know what's interesting about my screwdriver?" He asked, bouncing around the room. "Very hard to interfere with. Practically nothing's strong enough. Well, some hairdryers, but I'm working on that." He said, making Kari giggle a little. "So there is a very strong signal coming from somewhere, and it wasn't there before. So what's new? What's change?" He looked around the room, his eyes falling on Kari. She was looking down at the ground. ""Come on, what's new? What's different?"

"I don't know." Other Dave said, shrugging a little. "Nothing. It's getting dark?"

"It's a screwdriver, it works in the dark." He scoffed. "Moon light." The Doctor suddenly realised, looking up at the sky. "Tell me about the moon. What's there?" The Doctor asked, looking straight at Mr Lux.

"It's not real. It was built as part of the Library. It's just a Doctor Moon." Lux told him.

The Doctor kept his gaze on him. "What's a Doctor Moon?"

"A virus checker." Kari said at the same time as Mr Lux. "It supports and maintains the main computer at the core of the planet." Lux finished saying.

The Doctor turned on his screwdriver, the whirring noise filling the room and the light glowing blue. "Well, still active. It's signalling, look." The noise kept changing a little, like there was something else there. "Someone somewhere in this library is alive and communicating with the moon. Or, possibly alive and drying their hair." He said, before putting it closer to his ear and listening to it carefully. "No. Signal is definitely coming from the moon. I'm blocking it, but it's trying to break through."

Kari kept her attention on where she knew Donna was going to appear. A moment later there was a image of Donna standing there in the library, being projected from the Doctor's screwdriver.

"Doctor…" Kari said, getting his attention.

He looked and saw what everyone else was seeing. "Donna!"

The image disappeared, leaving the space where she had been empty. "That was her. Doctor, that was your friend. Can you get her back? What was that?" River asked, sounding in a bit of a panic.

"Hold on, hold on, hold on. I'm trying to find the wavelength." The Doctor told her, before letting out a groan. "I'm being blocked."

"Professor?" Anita called, getting the attention of only Kari.

"Just a moment." River said, not even bothering to look at her.

Kari let out a sigh. "Oh, Anita…" She whispered, looking at the woman sadly.

"It's important. I have two shadows." That grasped everyone's attention and they all turned to look at her.

"Everyone put your helmets on. River, grab Anita's, please." Kari said, knowing what was going to happen next.

"Didn't do Proper Dave any good." Anita said, letting the tears roll down her cheeks. She already knew what was going to happen to her, and she knew she couldn't stop it.

River came back over with Anita's helmet in her hands. "Just keep it together, okay?" She said.

Anita let out a slight laugh. "Keeping it together. I'm only crying. I'm about to die, it's not an overreaction." River then put the helmet on and locked it in place.

"Hang on." The Doctor said, coming over and joining them. He pointed his screwdriver at Anita's helmet before turning it on.

"Oh God, they've got inside." River cried as the visor on the helmet turned black.

"No, the Doctor just tinted the visor." Kari told her.

The Doctor nodded in agreement. "Maybe they'll think they're already inside, leave her alone." He said.

River just looked at him. "Do you think they can be fooled like that?" She wondered. Kari was the only one that knew the answer, and she kept her gaze firmly fixed on the ground beneath her feet, like she always did when she knew too much.

The Doctor looked at Kari, wishing she would answer the question for him. "Maybe, I don't know. It's a swarm, it's not like we chat." He informed River.

"Can you still see in there, Anita?" Other Dave asked her.

"Just about."

Kari noticed that everyone had gotten a little closer to get a look. "Just stay back, yeah?" She said, taking a step back herself.

But that was when the Doctor noticed something, he looked at Kari and she nodded slightly. "Professor, a quick word, please." He said, pulling Kari down to crouch on the floor, River joining them.

"What?" She asked, having no idea what was going on.

"Look, you said there were six people still alive in this room." The Doctor said, getting straight to the point he was trying to make.

"Yeah, so?"

Kari glanced over to the corner. "So, why are there seven?" She whispered at the same time as the Doctor.

Everyone turned around, as the three of them got up off the floor and looked at the figure standing behind them all. "Hey, who turned out the lights?" Dave asked, his skull clearly visible through the visor of his helmet. Only it wasn't really Dave anymore, it was the Vashta Nerada.

"Uh, run." Kari shouted, feeling the Doctor grab her hand tightly. They were then all running away from the swarm in the suit, trying to gain some ground as it could only move slowly.

But it was catching up, it was learning. "Professor, go ahead." The Doctor said, stopping on one of the walkways between parts of the library. "Find a safe spot. You as well, Kari."

"Nah, you know what, I'm okay staying with you." Kari told him, already knowing what was going to happen, and already preparing herself for it. It was going to be stupid and dangerous, but she wasn't going to let him do it on his own.

"Kari, go." He practically growled at her.

She simply shook her head. "No thanks. Off you go, River."

"It's a carnivorous swarm in a suit. You can't reason with it." River protested, not liking the fact that both of them were staying.

The Doctor turned and looked at her. "Five minutes." He said.

River shook her head. "Other Dave, stay with them. Pull them out when they're too stupid to live. Two minutes, Doctor."

The moment River disappeared, Dave, the living swarm, finally made it into the room. "Hey, who turned out the lights?" It asked once again.

The Doctor gripped Kari's hand tightly. "You hear that? Those words? That is the very last thought of the man who wore that suit before you climbed inside and stripped his flesh. That's a man's soul trapped inside a neural relay, going round and round forever. Now, if you don't have the decency to let him go, how about this? Use him. Take to me." The Doctor said to him. "It's easy. Neural relay, just point and think. Use him, talk to me."

"Hey, who turned out the lights?"

"The Vashta Nerada live on all the worlds in this system, but you hunt in forests. What are you doing in a library?" The Doctor asked, glancing at Kari out of the corner of his eye, making she was still okay. She was still beside him, but she looked very anxious.

"We should go, Doctor." Other Dave called. Kari closed her eyes tightly, knowing that yet another person was now dead.

"In a minute." The Doctor said, not really paying much attention to the man. "You came to the library to hunt. Why? Just tell me why?" He asked the swarm.

"We did not…" It said, taking the Doctor slightly by surprise.

"Oh, hello."

"We did not…"

"Take it easy, you'll get the hang of it. Did not what?" The Doctor wondered, he was rather interested in what the swarm had to say to him now.

"We did not come here." The voice of Dave called from the suit.

The Doctor was a little shocked, and confused. He looked at Kari, and she just shook her head at him. "Well of course you did." The Doctor said, looking back at the suit. "Of course you came here."

Kari shook her head once again. "No, they didn't." She whispered, earning herself a confused look from a certain Time Lord.

"We come from here." The Vashta Nerada confirmed.

"From here?"

"We hatched here."

"But you hatch from trees." The Doctor told it, still not getting it. Kari really did wonder about the Doctor's intelligence sometimes. "From spores in trees."

"These are our forests." Dave's voice told them both, not that Kari needed telling.

"You're nowhere near a forest. Look around you." The Doctor said, gesturing to all the books around them.

"These are our forests." He repeated.

"You're not in a forest, you're in a library." The Doctor told him, starting to get a little frustrated. "There are no trees in a…" That was when he finally realised it. "Library."

"We should go, Doctor." Other Dave called once again. And once again the Doctor paid him no attention.

"They came in the books, Doctor." Kari told him. "In the millions of millions of books that are in this library." He just looked at her, the look on her face told him that something else was wrong, and before he got the chance to ask, he found out.

"We should go, Doctor." The Doctor finally decided to turn around and look at other Dave, who was now just a skeleton in the suit, the same as proper Dave.

"Hey, who turned out the lights?"

"We should go, Doctor."

The Doctor quickly looked around in panic. The swarm had control of two suits now, and he was in the middle of them with Kari. There was no way forward and no way back. Kari could see that he was looking for a way out, and pointed to the hatch on the floor at their feet.

He smiled at her, getting his screwdriver ready. "Thing about me, I'm stupid. I talk too much." He said, making sure Kari was as close to him as possible. "Always babbling on. This gob doesn't stop for anything. Well, okay, maybe Kari can shut me up, but that's different and beside the point." He rambled, making Kari roll her eyes. "Want to know the only reason I'm still alive?" He asked them, getting ready for the plan. "Always stay near the door." His sonic screwdriver lit up, the trap door opened, and both he and Kari fell through it.

They both managed to grab onto the pipes that were running underneath of it. The Doctor had his screwdriver clenched between his teeth. "Come on, Doctor, shimmy it along." Kari said, hanging on as tightly as she could, really not wanting to fall.

He tried to talk, only for it to come out as a muffled mumbled. "Can't understand a word you are saying. So stop talking with your mouth full and move." Kari ordered once more.

"You knew about other Dave?" He called to her mind.

"Yeah, I did. But I also knew where the trap door was. Pretty good idea, huh?" She asked him, a slight smug grin on her face.

"You should have gone with the others." He told her. He had been non-stop worrying about her the whole time he had been confronting the Vashta Nerada.

The grin on her face turned into a smirk. "Nah, this was way more fun. Plus, it gives me something else to add to my 'never do again' list. Now stop your yapping and keep moving. My arms are getting tired keep hanging around here." Kari ordered. Her arms were actually starting to ache a little, but she knew she could make it safely to the other side.

It didn't take them long to reach another hatch, which the Doctor was quick to open and pull himself through. "Come on, Kari." He called, reaching down and pulling her through the hatch.

"Okay, now we need to move. Night is falling quickly, Doctor, we're going to run out of light." Kari told him, not waiting for him to say anything before she latched onto his hand and dragged him along with her.

She could hear River's voice floating down the corridor and reaching her ears. "You know when you see a photograph of someone you know, but it's from years before you knew them, and it's like they're not quite finished. They're not done yet. We, yes, the Doctor's here. He came when I called, just like he always does. And Kari, she always shows up with him, sometimes a little late, but she is always there." By that point they were almost right outside of the room, and the Doctor stopped Kari from rushing in.

"Why are we stopping?" Kari asked him, just getting him to shush her.

"But not my Doctor." They heard River continue saying. "Now, my Doctor, I've seen who armies turn and run away. And he'd just swagger off back to his TARDIS with his Kari and open the doors with a snap of his fingers. The Doctor and Kari in the TARDIS. Next stop, everywhere."

"Spoilers." The Doctor called, finally dragging Kari into the room with him. "Nobody can open a TARDIS by snapping their fingers. It doesn't work like that." He told her. Although he had told her that they were good after she had whispered something to him, he still felt uneasy around her.

River just looked at him. "It does for the Doctor."

"I am the Doctor." He growled at her.

"Right, that is enough from the pair of you." Kari said, getting their attention. "River, I swear, if you do not stop this I will ground you, and don't think that I won't. I don't even need to call your mother and father to ask, I'll just do it."

River just looked at her. "You're threatening to ground me?"

"Yes, Professor River Song, I am. And you should know I do not make empty threats." Kari said, immediately making her put up her hands in surrender. "And now to you, Doctor. Stop being so God damn moody. I may not be able to ground you but I can sure has hell make you sleep on the sofa."

"But she was…" The Doctor tried to protest.

"No, I do not want to hear it. I heard everything she said, and she knows that I will ground her. Now if the pair of you can't get along nicely, then don't bother to say anything at all. Is that understood?" It was clear that Kari was loosing her patience and her temper now. "God, the pair of you are worse than kids."

The Doctor just let out a sigh before wrapping his arms around her tightly. "I'm sorry." He whispered to her, before giving her a light kiss on the lips. "Okay?"

Kari nodded at him before looking over at the others in the room. "Right, now, we've lost Other Dave. I'm sorry." She told them all.

"Well, if they've taken him, why haven't they gotten me yet?" Anita wondered.

The Doctor stepped over to her. "I don't know. Maybe tinting your visor's making a difference." He looked and saw that she still had two shadows.

"It's making a difference all right." Anita scoffed. "No one's ever going to see my face again."

"Can I get you anything?" The Doctor asked her softly.

"An old age would be nice. Anything you can do?" She wondered. Kari couldn't help but feel sorry for her, she was going to die and there was nothing anyone could do about it.

"We're all over it." He replied, trying to give her some hope rather than nothing at all.

"Doctor, when we first met you, you didn't trust Professor Song. And then she whispered a word in your ear, and you did. My life so far, I could do with a word like that. What did she say?" The Doctor just looked at her, and then at Kari. "Give a dead girl a break. You secrets are safe with me."

And that was when it finally hit the Doctor, when he finally worked out what Kari already knew. "Safe."

"What?"

"Safe. You don't say saved. Nobody says saved. You say safe. The data fragment! What did it say?" The Doctor asked, getting a little excited.

"Four thousand and twenty two saved. No survivors." Kari told him, at exactly the same time as Mr Lux.

River just looked at him blankly as he processed everything. "Doctor?"

"Nobody says saved. Nutters say saved. You say safe. You see, it didn't mean safe. It meant, it literally meant, saved." He called. Kari let out a long breath, glad that he had finally worked it out. She had started to wonder if maybe she needed to just get on with it like she had done when they met Agatha Christie.

"Come on, check the archives. There has to be something on there that will help to explain all of this." Kari said, dragging the Doctor over to one of the computers.

"Kari, earlier you were a bit…" The Doctor didn't really know what to call it.

"Moody? Yeah, well you've been moody ever since you met River. You may not know her, Doctor, but I do. I'm not messing around when I say I know her parents, I wasn't joking when I said I've known her since she was born." Kari told him. She was sick of the way they were treating each other, the Doctor and River, because it was getting to her. "So you two need to sort it out and get along."

"Do you know what she told me? What that woman whispered to me to get me to trust her?" He asked.

Kari shook her head at him. She had no idea if she really would have told River his name, or if it would have been something else. Hell, even she didn't know his name, and if River did while she didn't, she wasn't sure she would be able to handle it.

"Kari, she knows my name." He said, making her close her eyes tightly. That was what she had been afraid it would have been. "She knows my name because you told it to her." He said, making her eyes fly open and lock onto his. "Why would you tell her my name?"

"What? I… I haven't told her your name. Well, at least I haven't told her it yet." She told him, not sure if he was angry, upset or just surprised.

"Why did you tell her?"

Kari let out a sigh. "I don't know. Like I just said, I haven't told her yet. Doctor, even I don't know what it is."

"But you know the one time I could tell someone my name?" The Doctor asked her, hoping that she really did know.

"Maybe. I have a few theories, but nothing concrete." Kari told him, trying not to let any of this conversation get to her.

"Kari, one day I'm going to tell you my name. And that day is going to be one of the best days ever." He told her, putting a hand under her chin and lifting her gaze back up to meet his. "Okay?" He said, making her nod, before he once again kissed her lips.

Kari bushed when he pulled away. "Now, can we get back to the computer. I want to get Donna back and get out of here."

A/N: I just want to say thank you to everyone who reads this, or any of my stories. And a bigger thank you to everyone who has reviewed.

I will not rattle on today, like I sometimes do. I will leave you to curse at me and beg and plead for the next chapter instead.

Pippa.