So, this is an interesting chapter from Nathan's point of view.

To be honest, he hadn't actually done anything since he escaped since he escaped, except hiding. No sooner had he left The Doctor behind, he had been forced to dart into a crevice in the wall to hide before any of the Night Walkers saw him. He knew The Doctor wanted him to find the TARDIS so that is what he would do. Not only was it the only way to save the world, but also the only way to save Clara. He searched through every room he passed, every empty corridor, but still there was no sign of The Doctor's TARDIS. Nathan was just about to turn into another corridor he was pretty sure he hadn't been in yet, when he heard several pairs of footsteps coming from his left. Luckily for him though, he happened to be next to another room. He tried the door and smiled when it opened. Hurrying inside, he closed the door behind him and pressed his ear to the door.

He heard a familiar feminine voice from outside. "You better not anger Theo, Doctor. Things can get very ugly when he is angry." It was Camille. Judging by what she said, he guessed she had The Doctor with him, but his suspicions were confirmed when the answering voice spoke.

"I'll manage." It was definitely The Doctor's voice he heard. There was just no mistaking the authoritative, yet slightly blasé tone. After that he only heard odd words in a conversation as what sounded like a pair of doors closing. He waited a minute, making sure it was safe, before opening the door and looking out. When he saw the coast was clear, he headed off in the general direction he knew Camille and The Doctor to have gone in. He knew The Doctor wanted him to find the TARDIS, but Nathan had an urge to follow The Doctor, as though he would miss out on some important information if he did. Besides, The Doctor would probably need him. He came to the end of the same corridor, and saw a pair of wooden double doors.

"I fetched him for you, but when I got there the boy was gone." It didn't take a genius to work out the missing boy they were talking about was gone.

"Gone? Gone where?" He recognised that voice as Theo's, the king of the Night Walkers.

" I do not know. He refuse to tell me where he was." Camille was yelling now, and without being able to see her Nathan knew the anger would be radiating off her in huge waves.

"Hey, now that's not true. I told you I didn't know where he was, which by the way Is the truth." Nathan heard The Doctor reply. He didn't seemed scared or concerned for his own health at all. He just kept riling these beasts.

" Is it now? Well, I'm pretty sure the boy was locked in with you, so you must know how he managed to escape?" It was phrased as a question instead of a statement. Nathan wondered how the vampire could stay so calm in this type of situation.

" He escaped through the door." The Doctor stated the obvious.

" Yes, but how did he escape through the door when it as locked?" Nathan listened intently to Theo's rising anger, wondering what The Doctor would reply.

" I unlocked the Door." Was all he said. Obviously you did that, Doctor. What are you playing at? Camille seemed to want to know the same thing too.

"How?"

"Oh, I don't know. Skill?" He heard The Doctor joke mockingly. He could scarcely believe The Doctor was doing this. Was he trying to get himself killed?

" Doctor! Tell me!" Theo's voice.

"Sorry, but I was under the impression that you no longer had any leverage against me, and I don't want to tell you." Nathan was beginning to think The Doctor really was insane. What sort of idiot, alien or not, would provoke vampires that were craving your soul? Was The Time Lord really that stupid or did he have a plan? Nathan decided the only way to find out would be to continue listening.

" Don't mess with us Doctor!" Camille yelled.

"Steady! That could send me deaf!"

"It would not matter." It was Theo's voice, this time calm again. Nathan was intrigued.

"What do you mean?" Nathan listened intently.

" I mean, with what we plan for you it will not matter whether you are deaf or not. It does not really matter that the boy is gone, in fact, that is good."

"Why is that good? Now you have no leverage against me."

"It was risky, having him around. Especially near you." What's that supposed to mean? Risky? Nathan didn't have time to answer though,before he saw ducked into the nearest crevice in the wall, which was fortunately shrouded in shadow. The figure walked past, seemingly not noticing him, before continuing towards the doors. As she passed, he had to hold in his shocked gasp. The figure in front of him, about to go into the room with The Doctor, Camille and Theo was Clara, looking just as undead as before. Nathan could only imagine what the atmosphere must be like in the room.

"You called, master." Clara's unusually plain voice drifted to him through the walls.

"Yes, I did. I will be requiring your services momentarily, but first, let me finish my chat with our 'guest."

"Anyway, where was I? Oh yes. It was risky having that boy as close to you as he was. In fact, in fact, I'm surprised you even bought him at all." Now this is getting interesting. Why am I risky?

"He was determined to come. He wanted to find Clara. I couldn't talk him out of it, but believe me, I wanted to." Well, that much was true, Nathan supposed. He did want to find Clara, whether The Doctor wanted to or not.

Theo laughed. " Haha, The boy is determined, to determined, to save Clara. How Ironic." Now Nathan could definitely say he was confused. Everything Theo was saying was just making him considerably more confused.

"Why is that Ironic?"

"Because it is." Theo replied. "When you released the boy, Doctor, did you think about what would happen to him if you were to die?" Nathan listened intently. Surely The Doctor had actually thought about that. Right?

"Why? Am I going to die?"

"Not exactly."

"What do you mean, not exactly?" Nathan to, was intrigued and wanting to know the answer just as much as his older companion.

"What do you think he means?" Camille.

Nathan didn't know what happened next, but after a minutes silence, there was a gasping sound followed by a "No!" from The Doctor. Nathan dreaded to think what could have scared The Doctor so much, he hadn't even reacted that bad to seeing the new version of Clara.

"No, I will not become one of you."Nathan, having his answer, also had to contain his gasp of terror and repulsiveness.

"You are so determined to save Clara, but you are running out of time Doctor. She has until nightfall tonight, and it is mid-morning now. You know deep down that you are going to fail." Theo paused. "But, if you join us, you can be with her, forever, both of you immortal."

"Something tells me that won't be the case. You want me for something. What?" Nathan decided he didn't really want to know this but by now he wanted to many answers to leave.

"Okay, I'll tell you. Your machine, Doctor, only you can fly it. We need you to fly your machine, but also, because of your species, you would be the Ultimate Night Walker, our ultimate weapon with your mind."

"But don't you lose all memories when you are transformed?" The Doctor asked.

" Only humans do. You will lose all your unnecessary memories, but will keep the necessary ones, we think."

"You think?" Nathan could sense the worry in The Doctor's tone. He knew that if it were him, he would have been all over the place in fear right now.

"Yes, you see, you will be the first non human to have been transformed. We have never done anything like this before. As for your memories, we have a little potion that will enable you to keep the memories we want you to keep, and nothing more." So, they want to turn him into one of them so he can fly the TARDIS and become a weapon.

"And what if it fails?" Nathan held his breath.

"At best you die. At worst you become a mutation, a monster." Nathan gulped.

"You can't do this! You don't know what your doing!" Although he didn't know what was happening, Nathan could imagine that The Doctor was struggling in Camille's grip.

"Oh, but we do Doctor." This time it was Camille that spoke.

"Then at least let me find Nathan, get him out of here. I'll wipe his memory so he can't remember. You have no reason to harm him." The Doctor pleaded. Wipe my memory? How can he wipe my memory? Why would he want to? Does he think I'll just go and blab to everyone? Nathan thought irritably. The only reason he wasn't angry was because The Doctor wanted to protect him.

"You have my word that no harm will come to the boy. It was never my intention to harm him anyway. That wouldn't have boded well for any of us. Now, enough idle chit chat. Clara?" What does he mean it was never his intention to harm me? With every sentence he listened to, the young boy was becoming more and more confused. It was only intrigue hat kept him crouched in the dark crevice. "Come here, my dear." Theo must have pulled out something edible if his next words were anything to go by.

"Give him this." He heard footsteps as someone moved. "Wait!" Yelled The Doctor. "At least answer me one more question!" Nathan heard the urgency inside The Doctor's tone and knew the situation must have been getting dire. "Enough!"

"Now, Now, sweetheart. I will answer his question, whatever it may be." Nathan began to get the impression that Theo was up to something more than he was getting at.

The Doctor asked his question. " There is one thing I don't understand. Camille. She is clearly a night walker like you, but she can go out in light, her skin is warm and she can change her eye colour. She also has that hypnotic power. So I want to know what she is." That was a good point actually. In fact, now The Doctor had voiced the question Nathan desperately wanted to know the answer. " She is a night walker, but she is different. When she was bitten, her transformation was only half complete. She was injured during the process, which meant that she was only half transformed. We were surprised she did not die. She is able to swap between human and Night Walker as she pleases, when she pleases, hence why she can change her eye colour and go out in light. As for her power, no one can explain it. She is truly one of a kind, and a fitting wife." Theo finished, and Nathan felt like the final piece of the puzzle had finally fit into place. The Doctor took the words out of his mouth.

"She's your wife?" The Doctor asked in awe. There was no more noise after that, expect for the sound of scuffling feet and a gurgling noise, as though something was being forced down their throat.

"Stop! You can't do this! You don't know what your doing!" The Doctor's voice was frantic, more frantic than Nathan had ever heard it. Whatever was happening in there must have truly been terrible.

"Stop him! What's he doing?!" Camille sounded really angry, and Nathan was barely holding back from opening the doors to see what was happening.

"Clara, please don't do this! This isn't who you are. You need to fight it Clara.!" Nathan's heart actually went out to The Doctor. It must be torture to have someone you care about so much do this to you.

"What did he want?" Nathan didn't know what they were talking about, until he remembered what happened when Clara chased them last time. The Doctor had used that sonic device. Perhaps that was what he was after now.

"What is that?" Camille asked, curiously. "What does it matter?" Asked Theo, before turning to address The Doctor. "The Doctor is powerless to stop us. In a matter of hours he will become one of us, forever."

"You can't do this! Please!" The Doctor yelled. "But, Doctor, you have failed. You have lost your TARDIS and you have lost Clara. Now you have no hope in returning her to her original state. And all along you have been protecting the one person who could have given you everything back. You have been protecting the one person who could have destroyed us all." Nathan had no idea what Theo was talking about now. He figured that perhaps the situation was getting to his head. "You know who the key is." The Doctor practically whispered in realisation.

"I do. I am surprised you have not realised before. Did you not notice his spectacular bravery? Did you not notice that he was eleven years old, the proper age? Did you not notice that he seemed to surprise you? Even when you told him your life story? Did you not notice how he didn't seem all to scared by us? Really, Doctor, are you as clever as they say?" He paused, before continuing. Nathan remembered the story Theo had told them earlier about the human child who had the power to destroy the Night Walkers. He pressed his ear closer to the wall in anticipation, awaiting the name. When he did, he felt his entire world come crashing down around him. It felt as though he could no longer breath, that his lungs were no longer taking in air. He now knew the name of the key.

Nathan.

He was the key.

SO, Nathan knows he is the key. What's going to happen next? Review to find out!