0:00:19 > 0:00:21What was that?
0:00:21 > 0:00:23Is the world going to end?
0:00:23 > 0:00:25- It is, isn't it?- No.
0:00:25 > 0:00:27- Not necessarily. - And what is this?
0:00:27 > 0:00:28You're not sure, are you?
0:00:28 > 0:00:31Get a grip, AJ, it's just a video or something.
0:00:31 > 0:00:34Maybe Casey used it to contain our twins in the SZ.
0:00:34 > 0:00:36They never mentioned the end of the world, Luke.
0:00:36 > 0:00:38This thing is really weird.
0:00:38 > 0:00:41- They were told their mission was to create a new world.- What, Titan?
0:00:41 > 0:00:44I mean, why would they need to create a new world unless..
0:00:44 > 0:00:46This one was about to be destroyed.
0:00:46 > 0:00:48Exactly.
0:00:48 > 0:00:51- Knew it. Cat thinks it really is the end of the world.- Are you serious?
0:00:51 > 0:00:56- Cat?- What if that prediction we've just seen is genuine?
0:00:56 > 0:00:58Oh, I'm too young to die.
0:00:58 > 0:01:00I'm too beautiful to die.
0:01:00 > 0:01:03What if that's what they've been hiding from us all this time?
0:01:03 > 0:01:04So, are they taking us too?
0:01:04 > 0:01:06How long do we have left?
0:01:06 > 0:01:07It does kind of make sense.
0:01:07 > 0:01:10I mean, the secrecy, your twins, the mission?
0:01:10 > 0:01:14One thing's for sure, they can't spin us a fairytale any longer...
0:01:14 > 0:01:16not now we've got this.
0:01:16 > 0:01:18Where are you going?
0:01:18 > 0:01:20To speak to Lena.
0:01:23 > 0:01:26What do you mean, they can't find him?
0:01:27 > 0:01:30I want personal tracking on a ten mile radius now.
0:01:30 > 0:01:32We can't expand any more resources on this, Lena.
0:01:32 > 0:01:34He's not likely to come back anyway, is he?
0:01:34 > 0:01:37You don't know Casey. Come with me.
0:01:39 > 0:01:42Cat, wait. We need to know more about this thing.
0:01:42 > 0:01:44Where did you get that?
0:01:45 > 0:01:47Give it to me.
0:01:47 > 0:01:49Not until you answer our questions.
0:01:51 > 0:01:54And before you start spewing out a load more lies,
0:01:54 > 0:01:56we already know most things.
0:01:56 > 0:01:58- The mission to Titan, the secret zone.- The what?
0:01:58 > 0:02:01The place you've kept our twins as prisoners all these years.
0:02:01 > 0:02:03Why didn't you tell me I had a brother?
0:02:03 > 0:02:06- AJ, no, you've got it all wrong. - Adam, hear him out please.
0:02:06 > 0:02:08We know they've been trained for a mission to Titan.
0:02:08 > 0:02:11We didn't believe it at first, couldn't understand why, and then...
0:02:11 > 0:02:13Then we saw the recording,
0:02:13 > 0:02:15or prediction, or whatever it is, of the apocalypse.
0:02:15 > 0:02:18It's just some kind of hoax, right?
0:02:18 > 0:02:19Mom?
0:02:19 > 0:02:22- Boys... - How did you get into D Quadrant?
0:02:22 > 0:02:26If you mean the secret zone, my eyes open the doors in there.
0:02:26 > 0:02:28- How come I have clearance? - You shouldn't have and you don't,
0:02:28 > 0:02:30not any more.
0:02:30 > 0:02:33Stop avoiding the subject. Tell us what's going on.
0:02:33 > 0:02:35Dad, please?
0:02:36 > 0:02:39For pity sake, will someone tell them?
0:02:39 > 0:02:41It's true.
0:02:42 > 0:02:45The apocalypse is coming.
0:02:45 > 0:02:47We're all going to Titan to escape it.
0:02:51 > 0:02:54But that Winters witch said if we did it again we'd be arrested.
0:02:54 > 0:02:56Nah, probably all that will happen
0:02:56 > 0:02:57is another village ban for those lot.
0:02:57 > 0:02:59All? Did he say all?
0:02:59 > 0:03:01If there's a village ban, Gregor,
0:03:01 > 0:03:03when and how am I ever going to see AJ?
0:03:03 > 0:03:05You could always try your giant catapult idea.
0:03:05 > 0:03:08Or signalling. I'll miss hanging out with the guys though.
0:03:08 > 0:03:10Guys? Or Gaia?
0:03:10 > 0:03:13Do you two not have homes to go to? We are closed.
0:03:13 > 0:03:15- Come on.- Mum.
0:03:15 > 0:03:17Meet here first thing, Gregor.
0:03:17 > 0:03:20I want to talk to you about your signalling idea.
0:03:22 > 0:03:24You still haven't said when.
0:03:24 > 0:03:26- Or how.- Or why.
0:03:26 > 0:03:27What does ACT stand for?
0:03:27 > 0:03:29- What about our twins?- Quiet!
0:03:35 > 0:03:37My brother, Lawrence Winters,
0:03:37 > 0:03:42found this in a cave here whilst on an archaeological dig.
0:03:42 > 0:03:44The cave you denied knowing about.
0:03:45 > 0:03:48It showed him the same images that you've just witnessed.
0:03:48 > 0:03:50He was in the official military in those days...
0:03:50 > 0:03:52The official military?
0:03:52 > 0:03:54..but nobody there took him seriously.
0:03:54 > 0:03:56So, he retired early, bought the castle
0:03:56 > 0:04:00and set up his own research facility.
0:04:00 > 0:04:04He believed that the object was some sort of warning
0:04:04 > 0:04:06or prophecy from another universe.
0:04:06 > 0:04:09From an ancient race of picks he told me.
0:04:09 > 0:04:11I admit it, we all thought it was a bit crazy
0:04:11 > 0:04:13when he approached us to work for him.
0:04:13 > 0:04:15It doesn't matter where it came from.
0:04:15 > 0:04:18The prophecy or whatever it was checked out.
0:04:18 > 0:04:21There was an asteroid heading towards the Earth.
0:04:21 > 0:04:24Lawrence was determined to save a fraction of humankind.
0:04:24 > 0:04:26So he formed the ACT,
0:04:26 > 0:04:28the Apocalypse Contingency Team.
0:04:28 > 0:04:30I said contingency.
0:04:30 > 0:04:33His vision was to form a space station on Titan,
0:04:33 > 0:04:35he piloted the first mission there.
0:04:35 > 0:04:43Your twins have been specially trained to pilot another mission.
0:04:43 > 0:04:45When is this asteroid going to hit?
0:04:45 > 0:04:48Lawrence's initial research discovered an asteroid
0:04:48 > 0:04:50due to enter the Earth's orbit in 2099.
0:04:50 > 0:04:52THEY ALL SIGH
0:04:52 > 0:04:54- That's ages away. - No.
0:04:54 > 0:04:56No, you don't understand.
0:04:56 > 0:04:58We've recently discovered another asteroid
0:04:58 > 0:05:00which is due to hit a lot sooner.
0:05:00 > 0:05:01When?
0:05:01 > 0:05:04We're still working on it, but...
0:05:06 > 0:05:07..within the next few months.
0:05:07 > 0:05:09Months?
0:05:09 > 0:05:10So erm...
0:05:12 > 0:05:13..the plan's about to change.
0:05:15 > 0:05:18We can't save the world...
0:05:18 > 0:05:20we can't even save the human race.
0:05:23 > 0:05:24We can only save ourselves.
0:05:31 > 0:05:33Will Nelly be able to come with us?
0:05:36 > 0:05:38Probably not.
0:05:41 > 0:05:44The world can't be going to end, it can't be.
0:05:49 > 0:05:52SHE SOBS
0:05:54 > 0:05:56So, my parents, are they...?
0:05:56 > 0:05:59They're also members of the ACT, yes.
0:05:59 > 0:06:01They've been working out of Stockholm,
0:06:01 > 0:06:03trying to pinpoint this new asteroid's trajectory.
0:06:03 > 0:06:05Why is nobody else doing anything?
0:06:05 > 0:06:07The Government, somebody?
0:06:07 > 0:06:10- Why aren't we trying to knock this thing...?- Because we can't see it.
0:06:10 > 0:06:12What?
0:06:12 > 0:06:15The asteroid is made from mirror matter.
0:06:15 > 0:06:17It's invisible to the naked eye.
0:06:19 > 0:06:22Mirror matter?
0:06:22 > 0:06:23Right.
0:06:23 > 0:06:26So, I'm not being funny or anything, but if you can't see it,
0:06:26 > 0:06:29how do you know that it's there?
0:06:29 > 0:06:30Trust me, it's there.
0:06:32 > 0:06:35If mirror matter is present in sufficient abundance,
0:06:35 > 0:06:38it can be detected by a process called gravitational...
0:06:38 > 0:06:40Will you stop talking science
0:06:40 > 0:06:43and start talking people?!
0:06:44 > 0:06:46What about Mackenzie?
0:06:46 > 0:06:48Everyone in the village?
0:06:48 > 0:06:51What about the world? What about my mum?
0:06:53 > 0:06:58Even if I knew how to contact her these days, which I don't...
0:06:58 > 0:06:59we wouldn't have room.
0:06:59 > 0:07:01That is so...
0:07:03 > 0:07:05- That is so- unf... Unfair.
0:07:05 > 0:07:07Yes, it is.
0:07:10 > 0:07:14Now do you see why I didn't want you forming an attachment to Mackenzie?
0:07:14 > 0:07:15It's too late.
0:07:26 > 0:07:30You see, I'd always questioned Lawrence's original timescales,
0:07:30 > 0:07:34so I started to do some research on mirror matter back in the States,
0:07:34 > 0:07:37and I developed my own theories,
0:07:37 > 0:07:42and we came back to World's End to check out my findings.
0:07:42 > 0:07:43And the rest of us?
0:07:43 > 0:07:46Were brought here in case those findings were proved correct
0:07:46 > 0:07:49and we needed to make our escape.
0:07:49 > 0:07:52I take it my parents were also part of this ACT?
0:07:55 > 0:07:58- Are they on Titan? - What? No, no-no.
0:07:58 > 0:08:01They disappeared like Casey's father disappeared
0:08:01 > 0:08:03and apparently he's on Titan, so...
0:08:03 > 0:08:06I honestly don't know where your parents are, I'm so sorry,
0:08:06 > 0:08:08but I do know they're not on Titan.
0:08:15 > 0:08:18We left here cos you didn't want one of us
0:08:18 > 0:08:21put into the astronaut training programme, right?
0:08:22 > 0:08:25So you took us away to save us...
0:08:26 > 0:08:30..and now you've brought us back to save us all over again?
0:08:31 > 0:08:33That's about right.
0:08:45 > 0:08:46I'd like to see my sister.
0:08:47 > 0:08:50Yeah, erm... Well, it's late.
0:08:50 > 0:08:52Maybe tomorrow, yeah?
0:08:52 > 0:08:55And I think you'd better check with Lena first.
0:08:57 > 0:09:00Right, I think you should stay with us tonight, Cat.
0:09:00 > 0:09:02I'll make a bed up for you, OK?
0:09:09 > 0:09:15# I'm gonna pick up the pieces and build a Lego house
0:09:15 > 0:09:18# If things go wrong we can knock it down
0:09:21 > 0:09:27# My three words have two meanings but there's one thing on my mind
0:09:27 > 0:09:32# It's all for you
0:09:32 > 0:09:35# And it's dark in a cold December but I've got you to keep me warm... #
0:09:35 > 0:09:38Can't you go to sleep either?
0:09:38 > 0:09:40# If you're broken I will mend you
0:09:40 > 0:09:45# And I'll keep you sheltered from the storm that's raging on now
0:09:45 > 0:09:48# I'm out of touch, I'm out of love,
0:09:48 > 0:09:51# I'll pick you up when you're getting down
0:09:51 > 0:09:54# And out of all these things I've done
0:09:54 > 0:09:57# I think I love you better now
0:09:57 > 0:10:00# I'm out of sight I'm out of mind
0:10:00 > 0:10:03# I'll do it all for you in time
0:10:03 > 0:10:06# And out of all these things I've done
0:10:06 > 0:10:09# I think I love you better now
0:10:10 > 0:10:13# Now, now... #
0:10:15 > 0:10:18The first circle represents the letters A-G.
0:10:19 > 0:10:21OK, so like this?
0:10:21 > 0:10:27A, B, C, D, E...
0:10:27 > 0:10:30No, erm... A-D with the right arm,
0:10:30 > 0:10:32E-G with the left.
0:10:32 > 0:10:34It was good of your mum to let us use these old curtains.
0:10:34 > 0:10:36She didn't, I just took them.
0:10:36 > 0:10:39- And the second circle. - What second circle?
0:10:39 > 0:10:42I don't know, I'm just reading what it says in the book.
0:10:42 > 0:10:46- Gregor, I need you to mind the cafe. - Coming!
0:10:46 > 0:10:49Why don't we just ask my mum to take our messages?
0:10:49 > 0:10:52Nice one, Gregor.
0:10:52 > 0:10:55- No!- But, Dad...- Trips to the village are out of the question.
0:10:57 > 0:10:58You can't see Mackenzie any more.
0:10:58 > 0:11:01Major Javadi, what's going on?
0:11:01 > 0:11:03He says I can't come in.
0:11:03 > 0:11:04- Back inside.- Please?- Do it!
0:11:08 > 0:11:12Hello, Moira. I'm afraid, after our security breach yesterday,
0:11:12 > 0:11:14we're having a bit of a clamp down.
0:11:14 > 0:11:15What kind of clamp down?
0:11:15 > 0:11:19We won't be requiring your services any more, with immediate effect.
0:11:19 > 0:11:22One month's wages. Very sorry.
0:11:38 > 0:11:39All teenagers to the mess.
0:11:39 > 0:11:42I repeat, all teenagers to the mess.
0:11:44 > 0:11:47As we still have crucial work to do before our departure to Titan...
0:11:47 > 0:11:50Why couldn't we have gone to Mars? It's so much nearer.
0:11:50 > 0:11:52We need you all to co-operate
0:11:52 > 0:11:54and prepare yourselves for what lies ahead.
0:11:54 > 0:11:55In order to help you do that,
0:11:55 > 0:11:58we've put together these information packs.
0:11:58 > 0:12:00We'll also be having more intensive classes
0:12:00 > 0:12:03- geared towards living on Titan. - What arbour our twins?
0:12:03 > 0:12:05Why are they still being kept in the SZ?
0:12:05 > 0:12:07If you mean D Quadrant, it's their home.
0:12:07 > 0:12:11Their prison more like. I want to see my sister, now.
0:12:11 > 0:12:15Forget about happy families. Your sister is out of bounds.
0:12:23 > 0:12:26SECURE DOOR BEEPS
0:12:26 > 0:12:28I've instigated protocol B, finally.
0:12:28 > 0:12:31You've done what?
0:12:31 > 0:12:33Not now our kids have met the others, surely.
0:12:33 > 0:12:34We don't have any choice.
0:12:34 > 0:12:37Lena, what am I going to tell them? I'm tired of lying.
0:12:37 > 0:12:40Think of the consequences for Luke and Noah
0:12:40 > 0:12:43if they discover the whole truth, Stephanie.
0:12:43 > 0:12:45It's a mess. The whole thing's a mess.
0:12:52 > 0:12:54How are we going to get there?
0:12:54 > 0:12:57Cat, was it is? Where are you going?
0:12:57 > 0:12:58We have to free them, Luke.
0:12:58 > 0:13:01It's not right that they're still being kept prisoner.
0:13:01 > 0:13:02I'm coming with you.
0:13:05 > 0:13:09TENSE MUSIC PLAYS
0:13:12 > 0:13:15I've been thinking. Did you all make a conscious decision
0:13:15 > 0:13:17to have twins through IVF or something?
0:13:17 > 0:13:20It's just...
0:13:20 > 0:13:22It's a bit of an odd coincidence otherwise.
0:13:25 > 0:13:27PHONE RINGS
0:13:30 > 0:13:31Hello?
0:13:33 > 0:13:35Luke's where?
0:13:38 > 0:13:40No!
0:13:40 > 0:13:42Please, Caitlin!
0:13:42 > 0:13:44Caitlin, please.
0:13:47 > 0:13:49What's wrong with them?
0:13:49 > 0:13:51What have they done?