"I like your perfume." The Slitheen cackled.

"Good sense of smell?" I asked, pulling open Mum's bag.

"Best nose in the galaxy official."

"Well smell this!" I pulled out the perfume bottle, smashing it on the ground before grabbing Mum's hand and pulling her towards the door, she soniced it and we ran out towards the car.

...

I put my phone into the handsfree set and rang Luke. It rang for a couple of seconds before he picked up.

"Luke?"

"Flo."

"I was wrong it is aliens." Sarah Jane said, driving quickly along the road.

"Yeah I know." He said as we heard growling.

"You need to make a big enough smell to get away." I told him before he hung up. Mum pressed down on the peddle and we eventually pulled up outside the technology block. We jumped out and Mum soniced the doors and Maria and Luke came runnin gout with a black teenage boy. Luke ran straight towards me and I hugged him tightly. "You ok?"

"Fine." He said.

"Come on, into the car." I said, ushering them into the car.

"What is he doing here?" Sarah Jane asked Maria.

"Sorry."

"Another persons life in my hands, just what I needed."

...

"Inhabitants of Rax-" Mum frowned at her watch before Luke looked at it, being able to read it.

"Raxacoricofallapatorius." He read.

"Well I could have told you that!" I said.

"The outcast Slitheen family are scavengers. Known to infiltrate low tech planets by hiding the in skin in the native species." Mum looked at me.

"Slitheen in Downing straat." We both said at the same time.

"What?" Luke asked.

"Something someone said once. Gas exchange from skin compression can lead to-"

"Farting." Luke said. "Farting's funny." Suddenly, the door burst open and Clyde and Maria walked in.

"Right, what's going on in..." He trailed off, taking in the attic.

"Why don't you bring round the whole school Maria, hm?" I asked.

"If he tells anyone, who's gonna believe him?"

"Hang on, I've just had creatures from outerspace on my back and nobody's gonna-"

"Just shutup a minute." Mum snapped. "I'm busy, and you're not important, it's getting like Clapham junction up here." She muttered as we made our way over to Mr Smith. "The Slitheen must have taken over Coldfire construction, put up building all over the world. Why?"

"I think I know." Luke said. "There's a hidden room in school, I saw inside.

"What's in there?" I asked.

"I've got a theory. Mr Smith could help."

"Who's that, your dad?" Clyde asked as Mum turned to Mr Smith.

"Mr Smith I need you." Mum said before Mr Smith opened up, leaving Clyde shocked.

"Good afternoon, Sarah Jane."

"Oh yes!" Clyde exclaimed. "Is that a computer?"

"Who's that?"

"Nobody, Mr Smith, Luke would like some help." Mum said, moving out the way so Luke could speak.

"Certainly." Mr Smith replied. "Hello Luke."

"Hello Mr Smith. Bring up a sattelite image of London please." Luke requested, to which a image of London appeared on the screen. "Now plot the exact position of every school building out up by Coldfire constructions." Red lights appeared on the map, locating every building.

"This is real, everything's real! The talking computer is real!" Clyde exclaimed.

"Mr Smith plot every building around the world put up by Coldfire constructions in the last 18 months." I said, Mr Smith putting up a worldwide map and plotting it. "Paris, Sydney, Beijing, look pretty random, not all capital cities. Hang on, they've all got underground railways!"

"Link them." Mum said.

"London, Barcelona, Washington, Santiago, Los Angeles, Sydney Beijing, Moscow, Naples, Paris." All the cities linked up across the world.

"There's a Slitheen at every sight."

"And there's ten sights across the world. That's it, call the army!" Clyde said.

"Oh will you shutup, please?" I snapped.

"Sorry, who is she?" He asked Luke.

"She's my sister." Luke muttered, still focused on the screen.

"Cause that'll make things better." Maria commented.

"It's not your job!"

"And there's a cleverer way of going about things. What's it all for?" She turned back to Luke. "Secret room, what was in there?"

"Mum I've done something really stupid." He gulped, turning round. "A really bad social mistake. I told the Slitheen how to destroy the world."

...

"It wasn't working until I went and gave them the answers." Luke sighed as I sat with him at the computer desk, looking at the plans. "The power cut last night, it was a test drive."

"But our candles went out," Maria said, picking up the plans and walking around the attic with them. "And that's not electric."

"When the capacitors are charged up, they act as tranducers, converting heat and light into electrical energy. That's how the loop works, it's not connected pyshically."

"But what has underground railways got to do with that?"

...

"Mr Smith, Luke needs to get in there to reset the system, so we need to know everything on the inhabitants of Raxacoricofallapatorius." Mum said.

"Wait!" I said. "I travel with The Doctor, him and Rose stopped them remember?"

"Of course, Flo, anything?"

"They're calcium creatures, living calcium!" I said, waving my arms around. "Jackie blew one of them up with vinegar!"

...

"The machines useless now, we broke the chain." Luke said as we walked along Bannerman Road, the Slitheen now stopped.

"Except there's rooms all round the world with secret rooms filled with alien technology inside." Maria said.

"Don't worry." I chuckled as Mum hung up the phone. "The Brigadier's sorting it."

"Friends of mine are sorting it." Mum agreed.

"Friends from UNIT?"

"What's UNIT?" Clyde asked. "Furniture shop?"

"WHERE WERE YOU?" Chrissie came rushing round the corner towards Maria, nattering on as usual. "Did you see the sun, it went blue!" She pulled Maria off across the road.

...

"Here's your reward, a nice cuppa." Mum said as she handed Clyde a mug, as we all sat in the living room, Luke upstairs.

"Is this from outer space?" He asked, looking at some ornament.

"Veneswuela." She said. "You ask too many questions Clyde."

"Too late for that." He laughed, sitting down next to me. "Can't stop me now."

"I suppose, that's how I got started." Mum said. "Asking questions."

"How did you start with all this stuff?"

"I met this man, called The Doctor, we both did." She smiled at me. "He was a alien too."

"What like a big green thing?"

"No." I laughed. "He looked just like you and me."

"Except he was nothing like you and me." Mum explained. "He took me through space, far away from Earth."

"You travelled in space? Both of you?" He asked, looking between us.

"And time." We both said.

"I saw galaxies and planets and things you wouldn't imagine!"

"So where is he now, this Doctor?"

"He's with Rose somewhere." I said as Mum squeezed my hand. "But he's coming back for me, soon, I just came to visit but things happened." I chuckled. "Maybe you'll meet him, you never know."

"The thing is Clyde you can't ever tell anyone about this, it has to be our secret, can I trust you?"

"Yeah."

...

I slipped into the bed, sitting next to Luke. It was pretty late and was really dark. He grabbed my hand a squeezed it, making me smile.

"You were great today." I mumbled.

"I nearly lost everything."

"It's ok." I sighed. "Luke?"

"Yeah?"

"You know I'm not always going to be here, you know that?"

"Because you're going to go back to The Doctor. But you'll still visit?"

"Of course! Every day if you want, it is a time machine. But that's not what I meant."

"What do you mean then?" He asked.

"The reason I'm travelling with The Doctor is because my timeline, there's something wrong with it, something different. And I've been thinking about it, and I think I know what it is now."

"What?"

"I think I'm going to die, Luke." I whispered. "I think I have to save The Doctor, that's why my timeline is so complicated. Travelling with The Doctor, you don't always come out of it alive."

"But-" I heard him start to get upset.

"You can't tell Mum, please." I whispered, hugging my brother as he started to cry.

"You can't leave me." He whispered.

"Ssh, it's ok." I whispered back. I got up slowly, letting him fall asleep as I felt my phone vibrate. I walked out of the room and answered.

"Hello?"

"I'm at the end of the road." It was The Doctor.

"Yeah, two minutes." I mumbled, hanging up. I walked into the attic and scribbled a quick note:

He came back, I'm sorry. I love you both x

And stuck the note to Mr Smith before walking downstairs and out of the house in my pyjamas, glancing at Maria's house and then down the street at Clyde's before walking off in the other direction in search of The TARDIS.

A/N - So that's the end of the SJA adventures for this series! But it isn't the end, there will be more, possibly sooner than you think! Next up is Fear Her. Please review, it makes me feel so much better and helps me write haha!