The wondrous 3rd chapter is here. Having already actually written this as one 18-odd-thousand word story without chapters, I'm having to come up with the chapter names as I upload. Let's all escape the cage.

They waited another hour for Holly to recuperate. Without her magic to help, it was taking longer for her to get her energy back, but within time she was walking around again, and quite easily trading sarcastic remarks with Artemis. It was at this point that he decided she was ready.
"So where is this weak spot then?" Holly asked.
"If you would like to follow me" Artemis replied. The only problem was that it was pitch black. How can you follow someone you can't see? Of course, Artemis had all the answers, though it really wasn't a very complicated solution. He simply linked his arm in Holly's, and led the way. After taking a good few steps, they reached the wall.
"Reach your arm out and feel it." Artemis instructed. Holly reached out, felling the smooth, cold wall. As she ran her hand across, she could feel the wall begin to dip slightly. She'd found the depression.
"OK I've found it. So we just have to hit this hard enough to cause it to smash?"
"That is the idea, yes."
"We're going to have to do a running jump at the wall to have any chance of breaking through, you do know that?" She asked expectantly.
"Holly, I spent a good deal of the time when you were unconscious trying to test the weak point, I know what we have to do. Unfortunately, I'm just not strong enough to do it by myself."
"So you wanted to wait until I was awake?"
"Only if you were well enough. I'm not going to put you in any danger."
"Artemis, I'm fine." Holly said dryly. She certainly felt a lot better than she did an hour ago.
"Well in that case" Artemis said, taking her hand and leading her back to the wall on the other side of the room. "We're going to need all the momentum we can get."
"On 3, mud boy?" Holly asked. Artemis shook his head.
"I really wish you wouldn't call me that."
"How about Arty then?" Holly replied sarcastically. Oops. He wasn't supposed to know about that one.
"I'd rather you didn't" He said, then stopped for a pause. "On 3?"
Artemis started counting out loud, and as soon as he hit 3, they ran for the door. Holly was naturally faster and more agile, but Artemis, being almost twice her size, could take greater strides. The further she ran, the less certain Holly was that there was actually a wall on the other side. That was until Artemis shouted "Now!". On that signal, Holly leapt into the air, leading with her shoulder. Both herself and Artemis hit the wall at the same time, the shockwave cracking the concrete. Light streamed through, momentarily blinding her as the reaction force made its way through her body. She could hear Artemis scream in agony as he hit the floor, so the first thing she did was go over to him, disregarding her own discomfort.
"Artemis!" She cried out, moving closer to him. Now she could actually see him, and he looked in great pain.
"I'm fine" He just about managed to get out.
"You're not fine." Holly said, concern filling her voice. "Let me take a look at it."
"No Holly, seriously, I'm fine." He said, standing up as if to make a point. "I'm just not as used to pain as some people are. Usually Butler is there to take it for me."
Something in Artemis' voice told Holly that he was hiding how bad it really was, but she didn't want to push him. After all, his genius had just found them a way out of there.
"Are you sure you'll be fine?" She asked, just to make sure.
"Yes, I just misjudged the weak spot slightly" Came the reply, with the cool air of certainty that Holly was used to hearing. But she couldn't help but reply.
"The great Artemis Fowl misjudged one of his calculations?" Holly laughed. Artemis just stood there.
"That's not funny. I was working in the dark."
"Of course that's your excuse" Holly said, rolling her eyes. She could continue the verbal sparring forever, but right now there were more important things to be doing. Namely, getting out of there.

Now that they can see each other, it's probably a good idea to describe our two trapped heroes. Artemis Fowl II, son of former criminal now legitimate businessman Artemis Fowl I, is by all accounts a genius. With his long, thin body and short, black hair, he looks every bit the criminal mastermind he used to be. Aged just 12, he successfully discovered the existence of 'fairies' living underground, and set about kidnapping one of them in order to extort them for gold. It just so happened that the fairy he decided to kidnap was Major (Formerly Captain) Holly Short of the Lower Elements Police, Recon division. Standing at something just over 3ft (In comparison to Artemis' 5ft 7"), with nut-brown skin and shoulder length Auburn hair, Major Short was quite the kick ass cop. Despite being kidnapped by Artemis, which is bound to put anyone off, the two eventually bonded and became friends. Mostly that happened whilst trying to save the world, both above and below ground, from a certain deranged pixie, which they'd been forced to do more than once. Other adventures included stealing back stolen fairy technology from an American businessman and saving a few Demons from their deteriorating time spell. Infact, during that particular adventure, Artemis and Holly had found themselves swapping eyes. Whilst Artemis used to have two blue eyes, and Holly two hazel ones, they now had one of each. They were literally a part of each other, even if Artemis had been mind wiped at one point during this time. So, perhaps it isn't surprising that the two of them found themselves locked in a dark room together.

"You know" Holly said, staring at Artemis. "We may have cracked up the concrete, but we're still not out of the room just yet."
"I know" He replied. "I'm working on it."
"Of course you are." Holly gave a mock yawn.
"You know you could always help me."
"I would if I actually had anything to help you with." Holly replied. "I could do with one of my LEP suits right about now."
"I don't have anything on me either, remember?" Artemis said, thrusting his hands into his pockets. "Except these pieces of paper of course."
"Yes, paper is going to break through this wall."
Artemis gave Holly his mock look of disbelief. But, now they had light, he could actually read what's written on the paper.
"Celestra-86. Celestra-89. Celestra-91." He looked straight at Holly with a deadpan expression. "I remember exactly what we were doing before we got here."
"How did you remember everything from those 3 words?" Holly asked, rather surprised. "It took you recording your entire fairy history on a disc and then reciting it to yourself to remember me after Foaly mind wiped you."
"That's because it was a sophisticated mind wipe. This was an amnesiac drug cocktail that I can break through easily enough with enough information. I already had suspicions from your flashbacks, but now I know for certain."
"Go on then" Holly said, "Why are we here?"

Why are they there indeed? Well, that's what chapter 4 is there for.