"Hey! Who turned out the lights?"

"Donna Noble has left the Library. Donna Noble has been saved."

"Hey! Who turned out the lights?"

River moved aside, shooting with her squareness gun at the nearest bookcase.

"This way," she told the group. "Quickly, move!"

"Hey! Who turned out the lights?"

Nobody needed to be told twice, and instead they just ran through the hole River created, moving on to other corridors in an attempt to escape the swarm.

"Okay, we've got a clear spot," River said as they entered a new room. "In, in, in!"

"Right in the centre, in the middle of the light, quickly!" Eva called. "Don't let your shadows cross."

"Oh, you help them but not Donna," the Doctor muttered.

"Doctor..." River said warningly.

"I know," the Doctor said, using his sonic screwdriver to scan the surroundings. "I'm doing it."

"There's no lights here," she said. "Sunset's coming, we can't stay long."

"Have you found a live one?" Eva asked.

"Maybe," the Doctor said, not bothering to look at her. "It's getting harder to tell." He hit his screwdriver a couple of times as it worked on and off. "What's wrong with you?"

"We're going to need a chicken leg," River said. "Who's got a chicken leg? Thanks, Dave," she said with a grateful smile as he handed it to her before she passed it to the Doctor.

"Okay," he said, throwing it through the area he tried to scan. "Okay, we've got a hot one. Watch your feet."

"They won't attack until there's enough of them," Eva said. "But they've got our scent now, they're coming." The Doctor moved aside, trying to understand if there are any more Vashta Nerada in the room and Eva neared him. "Doctor, can we talk?"

"No," he said coldly.

"Doctor..."

"You know, I somehow – somehow – managed to understand why you let Miss Evangelista and Proper Dave die," the Doctor said. "String of events, people you barely know and all of that. But Donna?"

"Doctor, if you'd just let me explain –"

"But that's just the problem, isn't it?" the Doctor asked. "You don't know Donna – not yet, not like future you used to. So she died, and you let it happen, all because you're young –"

Eva's punch hit the Doctor square in the jaw, sending him backwards.

"What the hell was that for?" he asked.

"I warned you not to call me young like that again," Eva said. "Now, you're going to listen to me, and you listen carefully, Mister. Just because I'm young, and haven't experienced everything you have, doesn't mean I don't have a conscious, or that I'm heartless. Maybe it's too much for you to understand but I, unlike some, don't like playing God."

"And I do?" the Doctor asked.

"You tell me," Eva retorted.

"Kids!" River called out. "We have bigger problems at the moment than your lovers' quarrel. Behave."

"It's not a lovers' quarrel," Eva said, empathizing the words in disgust. "Nor will it ever be."

"Eva, believe it or not, I know you –"

"I don't know who it is that you think you know, River," Eva said. "But if she puts up with this." She looked the Doctor up and down. "Then it sure as hell isn't me."

The Doctor huffed, trying to detect something in his sonic screwdriver and Eva stepped away from him and towards the group.

"So," Anita said, looking at where River was talking to the Doctor. "How do you know Professor Song?"

"We're best friends," Eva said.

"She said you never met her before," Dave said.

"Oh, I haven't," Eva told him. "But I know myself, and I know her, and I know there's no way on Earth I won't make her my best friend."

"But how do you know her?" Anita pressed.

"I just know," Eva said. "I know... almost everything. I know how things are going to end, for better and for worst, and I'm not allowed to change it. Mr. Hair over there is having trouble accepting it."

"Oi!" the Doctor called. "Mr. Hair?"

"Have you looked in the mirror recently?" she bit out.

"Bigger problems!" River called out. "Use the red settings."

The Doctor looked at her. "It doesn't have a red setting," he said.

"Well, use the dampers."

"It doesn't have dampers."

"It will do one day," River said, showing him her own screwdriver

"So some time in the future, I just give you my screwdriver," the Doctor said.

"Yeah," River replied.

"And why would I do that?"

"She didn't pluck it from your cold dead hands, if that's what you're worried about," Eva said. "Though if you keep going this way, she just might."

"How can I trust you?" the Doctor asked. "Currently, I have no idea why should I trust either of you."

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

"I'm not emotional," the Doctor muttered.

"Yes, you are and you're taking it out on Eva for no reason whatsoever," River said harshly. "There are six people in this room still alive, focus on that. Dear God, you're hard work young."

"He's not that much better old, either," Eva muttered.

"Young?" the Doctor questioned. "Who are you?"

"Oh, for heaven's sake!" Lux cried out. "Look at the three of you! We're all going to die right here, and you're just squabbling like an old married couple!"

"Doctor," River said slowly. "One day I'm going to be someone that you 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." She turned her head to look at Eva. "I'm really very sorry." River leaned in to whisper the Doctor's name in his ear, and for some reason Eva couldn't understand, it bothered her. "Are we good?" River asked when she leaned back. "Doctor, are we good?"

"Yeah," the Doctor said distractedly, sending a quick glance at Eva's direction and swallowing hard. "Yeah, we're good."

"Good," River said, taking back her screwdriver and walking away from him.

The Doctor stayed where he was, shocked as he looked between Eva and River. A minute or so passed and Eva knew they didn't have time, so she decided to give him a clue.

"Doctor?" she asked. "Here's something interesting about your screwdriver. Very hard to interfere with, nothing's strong enough. Well, some hairdryers are..." she added with a smile.

"I'm working on that," the Doctor muttered. "I knew you did that on purpose."

"You're missing the point," Eva said. "There is a very strong signal coming from somewhere, and it wasn't there before, so what's changed?" She looked around. "Come on. What's new? What's different?"

"I dunno, nothing," Dave said. "It's getting dark."

"It's a screwdriver, it works in the dark," the Doctor retorted.

"Doctor," Eva said. "Stop being rude and look up."

Everybody did as she said and the Doctor's eyes widened with understanding. "Moonrise," he muttered, turning to look at Lux. "Tell me about the moon," he said. "What's there?"

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

"What's a Doctor Moon?" the Doctor questioned.

"A virus checker," Lux explained. "It supports and maintains the main computer at the core of the planet."

"Well, it's still active, it's signalling, look," he showed the group the readings on his screwdriver. "Someone somewhere in this Library is alive and communicating with the moon"

"Or possibly," Eva said with a smile, "Alive and drying their hair."

"No, the signal's definitely coming from the moon," the Doctor replied. "I'm blocking it, but it's trying to break through."

He listened to the screwdriver, trying to understand the signal, when a hologram came out of it.

"Doctor!" Eva and River called, and he turned just in time to see the woman standing in front of them.

"Donna!" he barely managed to say before the hologram disappeared.

"That was her, that was your friend," River stated.

"Yes, it was," Eva said, looking right at the Doctor as she spoke. "Donna Noble is alive and well. She didn't die. She has been saved."

"Can you get her back?" River asked. "What was that?"

"Hold on, hold on, hold on," the Doctor said. "I'm trying to find the wavelength. I'm being blocked."

"Professor?" Anita said with a shaky voice and Eva's head whipped around to look at her.

"Damn it," she muttered. "Oh, I'm sorry – I forgot."

"Just a moment," River said, oblivious to what Eva just said.

"It's important," Anita told her. "I have two shadows."

Everybody paused in the middle of what they were doing except for Eva, who walked to the side and brought Anita her helmet.

"Helmets on, everyone," she said as she put it on.

"It didn't do Proper Dave any good," Anita retorted.

"Just keep it together, okay?" River said.

"I'm keeping it together," Anita replied. "I'm only crying. I'm about to die, it's not an overreaction."

"Hang on," the Doctor said, swiping his screwdriver in front of Anita's suit.

"Oh, God," River said as the visor darkened, like Proper Dave's had when he died. "They've got inside."

"No, he just tinted her visor," Eva explained. "Maybe they'll think they're already in there, leave her alone."

"Do you think they can be fooled like that?" River questioned.

"Maybe," the Doctor said. "I don't know. It's a swarm, it's not like we chat."

"Yet," Eva added, her remark not going unnoticed by the Doctor.

"Can you still see in there?" Dave asked.

"Just about," Anita said weakly.

"Just... Just stay back," the Doctor said, feeling uncomfortable with how close to the shadow Eva was standing. "Professor, Eva, a quick word, please."

"What?" River asked as Eva and the Doctor kneeled down.

"Down here," the Doctor told her.

"What is it?" she asked, leaning next to them.

"Like you said, there are six people still alive in this room," the Doctor started.

"Yeah, so?"

"So," Eva said slowly, looking behind them, "Why are there seven?"

"Hey! Who turned out the lights?"

"Run!" the Doctor said, grasping Eva's hand and sprinting away.

"Let go of me!" she called, yanking her hand away.

"Hey! Who turned out the lights?"

"What do you think you're doing? " the Doctor asked.

"I'm mad at you!"

"Hey! Who turned out the lights?"

"Is this really the time for this?" the Doctor questioned.

"Yes, it is!" Eva called, quickening her pace to get away from him.

"Hey! Who turned out the lights?"

They ran for a while before the Doctor paused, allowing the rest to go past him.

"Professor, Eva, go ahead, find a safe spot," he said.

"It's a carnivorous swarm in a suit, you can't reason with it," River protested.

"Yet," the Doctor said. "That was what Eva said when I told you we don't chat. Yet."

"That's right," Eva told him. "And I'm staying with you."

"Eva!" both the Doctor and River called.

"Five minutes," Eva said. "It'll be fine."

River huffed, annoyed. "Other Dave, stay with them," she ordered. "Pull them out when they're too stupid to live." She turned back to the Eva, who made sure to stand a good two feet away from the Doctor. "Two minutes, Evie," she said before running away.

"Hey! Who turned out the lights?" Swarm-Dave asked.

"You hear that?" the Doctor asked him. "Those words? That is the very last thought of the man who wore that suit before you climbed inside it 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. Talk to us."

"It's easy, neural relay," Eva said, moving closer. "Just point and think."

"Use him," the Doctor repeated. "Talk to us."

"Hey! Who turned out the lights?"

"The Vashta Nerada live on all the worlds in this system, but you hunt in forests," the Doctor went on. "What are you doing in a library?"

"We should go," Other Dave said. "Doctor!"

"In a minute," Eva told him, her heart clenching as she knew what was coming for him.

"You came to a library to hunt, why?" the Doctor questioned. "Just tell us why?"

"We... did not," Swarm-Dave said.

"Oh, hello," the Doctor said, sighing in relief.

"We did not," the swarm repeated.

"Take it easy, you'll get the hang of it," Eva said. "Did not what?"

"We... did not... come... here."

"Well, of course you did, of course you came here," the Doctor said, not understanding what the swarm meant.

"We come from here."

"From here?" the Doctor repeated.

"We hatched here," the swarm said.

"But you hatch from trees, from spores in trees," the Doctor said.

"These are our forests," the swarm replied.

"You're nowhere near a forest," the Doctor insisted. "Look around you."

"These are our forests."

"You're not in a forest, you're in a library," the Doctor said.

"Think, Doctor," Eva said. "Trees in a library."

"We should go. Doctor!"

"Books," the Doctor said. "You came in the books. Microspores in a million millions books."

"We should go. Doctor!"

"Oh, look at that," the Doctor said, looking out the window. "The forests of the Vashta Nerada, pulped and printed and bound. A million millions books, hatching shadows."

"We should go. Doctor!"

"Doctor," Eva said, marking her head at Other Dave, now nothing other than bones.

"Oh Dave!" the Doctor sighed. "Oh, Dave, I'm so sorry."

"Hey! Who turned out the lights?" Swarm-Dave went back to saying.

"We should go," Other Dave repeated. "Doctor!"

"He's stupid, he talks too much, this gob doesn't stop for anything," Eva told the swarms, marking at the Doctor's mouth. "But, do you want to know the only reason he's still alive?" She grasped the Doctor's hand and he smiled, taking out his sonic screwdriver and pointing it at the trapdoor they were standing on.

"Always stay near the door," they said together, freefalling down but just managing to hang on the railings and move on.

"So," the Doctor said after they were almost halfway through. "Donna's alive."

"I'm still mad at you," Eva said.

"You have every right to be," the Doctor said. "Donna's alive and I yelled at you for killing her."

"You..." Eva paused for a moment before moving on. "You really think that was my problem?"

"Wasn't it?"

Eva rolled her eyes. "Never mind," she muttered. "It doesn't matter."

"No," the Doctor said. "It's bothering you, of course it matters."

"Wrong," Eva said. "It would have mattered if it would have been an older me."

The Doctor looked at Eva, shocked. "Is this what it's about?" he asked. "You think I care less just because you're young?"

"No!" Eva called out. "Yes. You know what, I..." she sighed. "The way you're feeling when you talk to me, like I'm not cooked yet, not ready – that's how River feels when she looks at you."

"Figured as much," the Doctor replied. "What does that have to do with anything?"

"Think about how you feel when she says you're young," Eva told him. "Think about how you feel when you know all she wants is an older version of you. That's how I feel."

"I..." the Doctor didn't know what to say. "I'm sorry."

"Don't be," Eva bit out. "Just move on so we can get back to Anita, River and Lux, save everybody and I could have a cigarette."

"You know," the Doctor started. "You really smoke a lot..."

"Do remember that we're hanging hundreds of miles above ground," Eva said sharply.

"Note taken."

A/N: Until next time, you can look for me on Tumblr (Mayalr96, Fandoms All Day) for sneakpeeks and updates, or on pa tr eon (Delete the spaces on the site name, ffnet in annoying, Mayalr96) where you can already read the next two chapters!

To twilightvamps: So far, I think the sneakpeeks will remain only on Tumblr, but that might change in the future.