"You're not wearing green..." Tory commented quietly.

"Urm... no.." the Doctor replied, raising an eyebrow as he turned from the console to look at her. She smirked. She was wearing a mass of green tinsel round her neck. "You are, though."

"Guessing you don't know what day it is..." she grinned manically. He glanced over her shoulder at Rose and Jack, Rose wearing a dark green tracksuit.

"Urm... don't have a calender, but I can hazard a guess. St. Patricks Day..." he groaned, jumping as she pinched him and rolling his eyes. "He's not wearing green!" he objected, pointing at Jack.

"I beg to differ." he winked. The Doctor raised an eyebrow in surprise.

"Okay then.. where to?" he asked, his grin returning.

"Anywhere." Rose shrugged.

"How about Shinshal?" he suggested.

"Hmm, sounds... well, I dunno what it is, so we'll go with that." she sighed. Tory smiled.

"Nice there." she nodded, sitting down, playing with the green tinsel round her neck. She'd settled surprisingly well into the TARDIS, considering her more-than-occaisional mood swings and unpredictable nature - she just had that odd innocent little charm. She enjoyed discussing things with the Doctor - the state of this world, or that, at these times, or political issues, or just the odd little thing. It was nice to have a girly pal in Rose to chat to. And Jack, well, he just had that same charming factor that made people like him, despite the fact that you knew you should actually hate him some of the time. She enjoyed the running-for-her-life 'adventures' and mysteries following them. She always grinned when the TARDIS doors creaked open, just like this time. She ran to the doors, jumping in excitement and staring around at the tiled floors and perfect blue sky for miles around. Four skilfully carved red wooden pillars held a large carved wooden roof of the same deep red hue. The perfect tranquility of the area lasted a few mere seconds, before a range of people ran past them in red jumpsuits, screaming. The Doctor grabbed one and pulled him over. He was dark skinned and his brown eyes were brimming with panic.

"LET ME GO!" he screamed. "THE TSARLSAR. ITS FREE!" he tugged madly before the Doctor let go, then fell to the ground, before scramling to his feet and dashing after the others. A few moments later, the ground shook and a giant red lizard thundered after them, eying them hungrily and flicking its thin toungue around its giant, scaly, red lips and setting off again.

"GUESSING that's the Tsarlsar." Tory nodded slowly. "COOL!" The Doctor rolled his eyes.

"Come on, we're going to find out what it is..." he decided, stepping out of the door and walking in the opposite direction to the Tsarlar.

"It's that way, unless you're scared of it." Jack said, pointing in the direction of the lizard.

"Oh, I know. But they said it escaped, so we'll go to the place it escaped from, which SHOULD be over there." he smiled in triumph. Jack sighed in defeat and followed him, Rose and Tory already walking after them.

They stopped as they came to a large office building, half of it ripped off. The top floor was revealed a little - white and so big it would have taken up 5 floors.

"Found it. Now." he grinned, walking inside and into the lift on the undamaged side before tapping the button for the top floor. The other three followed him inside.

"So, the top floor. Why? What's there?" Tory asked.

"Looked huge, didn't it? Suppose it's important, right? So, that's where we get the most answers." he replied.

"If it's so important, why isn't it guarded?" Tory asked. The Doctor paused.

"I guess... " he frowned, looking down at the whirring sound and the small blue light.

"It was." Jack smiled, holding up the sonic screwdriver. The Doctor gasped.

"Thief!" he announced, snatching his screwdriver back.

"I just thought I'd cut off the security before you set the alarms off." he shrugged, looking round as a 'ding' was heard and the doors opened.

"Oh.. shall we?" he smiled, walking out of the lift and looking around.

"It's like... a lab.." Rose said quietly.

"Hmm, I think it is. And something tried to get out of here-"

"Tsarlar?" Tory asked.

"I'm guessing... yes..." the Doctor replied, glancing at a desk as he saw something shuffle behind it.

"I'm on it." Jack muttered, grabbing a gun from a rack on the wall - which he guessed contained a tranqueliser dart - and slowly making his way round the side of the desk, stepping back in surprise as a female voice cried out.

" NO, PLEASE!" she screamed, jumping up, relaxing once she saw it was a man holding a gun - not a lizard.

"What happened here?" he asked, drooping the gun to show he wouldn't shoot, but keeping hold of it to show he would if he had to. She swallowed.

"The Tsarlar escaped." she explained quietly.

"What's the Tsarlar?" he asked her. She was tanned lightly, her dark hair held back in a ponytail, her black suit hidden under her lab coat.

"The.. Tsarlar." she began, wondering how he hadn't heard of it. "We.. we had a small lizard, a Gecko, and we shot it with a Neurontali beam to see what happened. It grew rapidly and soon grew into a carnivore - it escaped when it ate Mr. Green. He was feeding it." she winced at the memory and sighed.

"So, simple. Neurontali beam! Reverse it with an Ilatoruen beam, then shoot the Tsarlar!" he grinned, already looking around for the beams.

"Neurontali beams there, Ilatoruel beams there." she pointed.

"So, shoot this with that, shoot the Tsarlar with this, then hey presto! Tiny Gecko!" the Doctor smiled. This was a fairly easy mission.

"If you can get close enough without it eating you." Tory pointed out.

"If we can get close enough..." he echoed. "Use a diversion, shoot it from behind."

"I guess." Tory shrugged, hands in her pockets.