Doctor Who

There we go! Universal roaming.

Never have to worry about a signal again.

No way! It's too mad.

So I can phone anyone, anywhere in space and time on my mobile?

Long as you know the area code.

Frequent flyer's privilege.

Go on, try it.

Distress signal! Locking on, might be a bit of...

..turbulence. Sorry!

Come on, Martha, let's take a look.

'Automated distress signal transmitting.' Woh! Now that is hot!

'Automated distress signal transmitting.' It's like a sauna in here!

Venting systems.

Working at full pelt, trying to cool down...

wherever it is we are.

Well! If you can't stand the heat...

That's better! Oi, you two!

Get out of there. Seal that door! Now!

Who are you? What're you doing on my ship? Are you police?

Why would we be police? We got your distress signal.

If this is a ship, why can't I hear any engines? It went dead four minutes ago.

So maybe we should stop chatting and get to engineering. Captain. 'Secure closure active.'

What? This ship's gone mad.

Who activated secure closure? I nearly got locked into Area 27!

Who are you? He's the Doctor and I'm Martha. Hello.

'Impact projection 42 minutes, 27 seconds.'

We'll get out of this. I promise. Doctor! 42 minutes until what?

Doctor!

Look.

42 minutes until we crash into the sun.

How many crew members on board? Seven, including us.

We transport cargo across the galaxy. Everything's automated.

Call the others. I'll get you out. What's he doing?! Doctor, don't!

But my ship's in there!

In the vent chamber?! It's our lifeboat! It's lava.

The temperature's going mad in there. Up 3,000 degrees in ten seconds and still rising.

Channelling the air. The closer we get to the sun, the hotter that room'll get. We're stuck here.

So, we fix the engines, we steer the ship away from the sun. Simple!

Engineering down here, is it? 'Impact in 40.26.'

Blimey! D'you always leave things in such a mess? Oh, my God.

What happened?

It's wrecked! Pretty efficiently, too. Someone knew what they were doing.

Where's Korwin? Anyone heard from him or Ashton?

No. D'you mean someone did this on purpose?

Korwin, Ashton, where are you?

Korwin, can you answer?!

He should be up here!

Oh, we're in the Torajii system, lovely!

You're a long way from home, Martha. Half a universe away.

Yeah, feels it. And you're still using energy scoops for fusion!

Hasn't that been outlawed yet?

We're due to upgrade next docking.

Scannell, engine report!

No response. What?

The controls are wrecked, I can't get them back online.

Oh, come on! Auxiliary engines! Every craft's got auxiliaries!

We don't have access from here. The auxiliary controls are in the front of the ship.

With 29 password-sealed doors between us and them. We'll never get there on time.

Can't you override the doors? No, sealed closure means what it says. They're all deadlock sealed.

So a sonic screwdriver's no use. Nothing's any use! We've got no engines, no time and no chance.

Oh, listen to you, defeated before you've even started!

Where's your Dunkirk spirit? Who's got the door passwords?

They're randomly generated. Reckon I'd know most of them.

Sorry, Riley Vashtee. What're you waiting for, Riley Vashtee?

It's a two person job. One to take this for the questions, the other to carry this.

The oldest and cheapest security system around. Reliable and simple. Just like you, Riley.

Try to be helpful, get abuse. Nice. I'll help you. Make myself useful.

It's remotely controlled by the computer panel. That's why it needs two. Oi, be careful.

You too.

'McDonnell, it's Ashton.'

Where are you? Is Korwin with you? 'Get up to the Medcentre, now!'

You've gotta stop it!

Korwin, it's Abi, open your eyes, I need to take a look at you.

Korwin! What's happened? Is he OK? Kath! Help me! It's burning me!

How long's he been like this? Ashton just brought him in. What are you doing?! Don't get too close.

He's my husband! And he's just sabotaged our ship!

What? He went mad.

He locked the ship, then sent a heat pulse to melt the controls.

He wouldn't do that! I saw it happen, Captain.

Korwin? Korwin, open your eyes for me a second?

I can't. Yeah, course you can. Go on.

Don't make me look at you. Please.

All right, all right just relax.

Sedative?

What's wrong with him?

Rising body temperature, unusual energy readings.

I do love a good stasis chamber! Keep him sedated in there, regulate the body temperature.

And run a bio-scan, a tissue profile and a metabolic detail.

Just doing them now. Ooh, you're good!

Anyone else presenting these symptoms? Not so far. That's something!

What's the matter with him? Some sort of infection. We'll get the test results.

Now, back downstairs, eh, see about those engines, go.

Call us if there's news. Any questions? Yeah. Who are you?

I'm the Doctor!

Heat shield failing at 25.

Impact in 32.50.

Hurry up, will you? All right!

Fix the clamp on. What're you typing?

Each door's code is the answer to a random question set by the crew.

Nine tours back, we got drunk, thought them up.

If we're hijacked, we're the only ones who know all the answers.

So you type in the right answer. This sends an unlock pulse to the clamp.

But we only get one chance per door.

Get it wrong, the whole system freezes.

Better not get it wrong then. OK! Date of SS Pentallian's first flight? That's all right! Go!

Yes! 28 more to go!

Abi, how's Korwin doing? Any results from the bioscan?

He's under heavy sedation. I'm just trying to make sense of this data.

Give me a couple of minutes and I'll let you know.

Martha, Riley! How you doing? Area 29, at the door to 28.

Yeah, you've gotta move faster! We're doing our best!

Find the next number in the sequence. 313, 331, 367. What?!

You said the crew knew all the answers!

The crew's changed since we set the questions.

You're joking. 379! What?

It's a sequence of happy primes. 379!

Happy what? Just enter it! Are you sure? We only get one chance!

Any number that reduces to one when you take the sum of the squares of its digits,

A happy prime is a number that's both happy and prime.

and continue iterating until it yields one, is a happy number. Any number that doesn't, isn't.

Now type it in! I dunno, talk about dumbing down, don't they teach recreational mathematics any more?

We're through!

Keep moving, fast as you can.

And Martha, be careful. There may be something else on board the ship.

Any time you wanna unnerve me, feel free. Will do, thanks.

Impact in 30.50. Can't believe our lives depend on some stupid pub quiz. Is that the next one?

Ah, this is a nightmare.

Classical music. Who had the most predownload number ones?

Elvis Presley? Or The Beatles?

How are we supposed to know that?

We need a back-up, in case they don't reach the auxiliary engines in time.

What have we got? Doctor!

What is it now? Who had the most number ones, Elvis or the Beatles?

Pre-downloads? Elvis!

No! The Beatles!

No! Wait!

Erm, that remix?

I don't know! I am a bit busy! All right! I'll ask someone else!

Now, where was I? Here Comes The Sun!

No! Resources! So! The power's still working, the generator's going, if we could harness that. Ah!

Use the generators to jump start the ship. Exactly! It'll buy some more time. That is brilliant!

I know! See, tiny glimmer of hope!

If it works. Oh, believe me, you're gonna make it work.

That told him!

Impact in 29.46.

Hello? Mum! It's me!

It's Martha! Wow!

Where are you? Don't you check your messages? I've been calling you!

Actually, bit busy, need you to do something for me. No, listen to me.

We have to talk about this Doctor. Not now. I need you to look something up on the internet.

Do it yourself! Oh, just DO IT!

Please. When did you get so rude?

I'll tell you when - ever since you met that man.

I need to know who had more number ones, the Beatles or Elvis. Hang on, the mouse is unplugged.

OK, I'm on. What is this, a pub quiz?

Yeah. Pub quiz. Using your mobile is cheating.

Have you found it? There's over 400,000 results.

Give me a minute!

'Impact in 28.50.'

Doctor, these readings are starting to scare me. What d'you mean?

Korwin's body's changing.

His whole biological make-up, it's impossible.

This is Medcentre, urgent assistance requested, urgent assistance!

Stay here! Keep working!

Urgent assistance!

Abi, they're on their way.

What's happening to you? Burn with me.

Burn with me. Captain!

I told you to stay in engineering!

I only take orders from one person. Is he always this cheery?

Elvis! What?

Really? Elvis!

Burn with me.

Korwin, you're sick.

Burn...with...me!

Mum, you're a star!

Now, we need to have a serious talk.

What was that?

I've gotta go!

Doctor, what were those screams? Concentrate on those doors!

Impact in 27.06.

Korwin's gone!

Oh, my God...

Tell me that's not Lerner.

Endothermic vaporisation. Horrible.

I've never seen one this ferocious.

Burn with me.

That's what we heard Korwin say. What?

You think...?

No way! Scannell, tell him! Korwin is not a killer.

He can't vaporise people! He's human!

His bio-scan results.

Internal temperature 100 degrees, body oxygen replaced by hydrogen.

Your husband hasn't been infected. He's been overwhelmed.

The test results are wrong. What is it? A parasite, mutagenic virus?

Something that needs a host body, but how did it get inside him?

Stop talking like he's some kind of experiment! Where's the ship been recently?

Docked with any other vessels? Any sort of external contact? Is this an interrogation?

We've gotta stop him, before he kills again. We're just a cargo ship

Doctor, if you give her a minute.