0:00:02 > 0:00:04MACHINE WHIRS
0:00:19 > 0:00:21Does this mean I'm going?
0:00:21 > 0:00:23Long straw means you're not.
0:00:23 > 0:00:25- I don't want to do it. - You don't have to.
0:00:25 > 0:00:27I didn't count you in, Gaia.
0:00:29 > 0:00:31Hang on, what about her?
0:00:31 > 0:00:34- The name's Lexy, and I have to go. - How come?
0:00:34 > 0:00:37Because I'm important, unlike you.
0:00:37 > 0:00:39HE MOUTHS Oh...
0:00:39 > 0:00:41Noah?
0:00:44 > 0:00:48That's it, then. Lexy, Luke and me.
0:00:48 > 0:00:50You need to be careful.
0:00:50 > 0:00:52Our twins are not friendly, trust me.
0:00:52 > 0:00:55We'll go in the early hours, yeah? Once everyone's in bed.
0:00:55 > 0:00:58Is that a good idea? I mean, how will they react to the three of you
0:00:58 > 0:01:00- arriving in the dead of night, waking them up.- Angrily.
0:01:00 > 0:01:03LUKE: Noah's right. Maybe we should wait till morning.
0:01:03 > 0:01:06- Getting cold feet, Luke?- No, I'm saying we be careful, that's all.
0:01:06 > 0:01:08Yeah, what if all the lights are off?
0:01:08 > 0:01:10If they're startled and scared, they might attack you.
0:01:10 > 0:01:12Yeah, like zombies.
0:01:13 > 0:01:16- What?- I want to get down there as soon as, because I don't care
0:01:16 > 0:01:19what you say, Gaia, I know my twin is there somewhere.
0:01:19 > 0:01:21Take a vote.
0:01:21 > 0:01:23All those in favour of waiting till morning...
0:01:27 > 0:01:28I guess that's decided, then.
0:01:35 > 0:01:38MUFFLED VOICES SPEAK
0:01:41 > 0:01:45- You do realise Mum must be in on all of this?- Not necessarily.
0:01:45 > 0:01:47She took us away from here, remember?
0:01:47 > 0:01:49Yeah, and now she's brought us back.
0:01:49 > 0:01:52Well, maybe she didn't have a choice.
0:01:52 > 0:01:54I don't trust her, Luke.
0:01:54 > 0:01:55I'm sorry, but I don't.
0:01:58 > 0:02:01You know who I think is Lena's number two?
0:02:01 > 0:02:04- Major Javadi?- Duncan.
0:02:04 > 0:02:05Dad?
0:02:05 > 0:02:08Yeah, think about it. He's lived in the castle the whole time,
0:02:08 > 0:02:11just like Lena. He's the one who talked to Gaia in the secret zone.
0:02:11 > 0:02:14He had Cat's stuff in his apartment.
0:02:14 > 0:02:17And Mum obviously hated him so much, she told us he was dead.
0:02:17 > 0:02:20- So, let's go talk to Mum.- No.
0:02:20 > 0:02:23- She'd only lie to us again. - You don't know that.
0:02:23 > 0:02:26Maybe I should go talk to him, push his buttons a bit more.
0:02:26 > 0:02:29- What?- He nearly lost it earlier with Cat.- So?
0:02:29 > 0:02:31Why risk you and Cat going to the secret zone,
0:02:31 > 0:02:33if Duncan will tell us what we need to know?
0:02:33 > 0:02:35No, get back into bed, it's late.
0:02:35 > 0:02:37We'll discuss what to do in the morning.
0:02:39 > 0:02:40Noah.
0:02:43 > 0:02:46MUFFLED VOICES SPEAK
0:03:10 > 0:03:14WOMAN: Caitlin.
0:03:14 > 0:03:16Where's Mummy?
0:03:43 > 0:03:45TAP ON WINDOW
0:03:47 > 0:03:49TAP ON WINDOW
0:04:23 > 0:04:25Noah.
0:04:29 > 0:04:31- What are you doing? - I'm going to talk to Duncan.
0:04:31 > 0:04:33No.
0:04:35 > 0:04:37Wait.
0:04:37 > 0:04:39Let go, I know what I'm doing.
0:04:39 > 0:04:41I thought we agreed to sleep on it.
0:04:41 > 0:04:43No, you agreed. And I can't sleep.
0:04:43 > 0:04:45What's going on in there, are you two arguing?
0:04:45 > 0:04:47No, everything's cool.
0:04:48 > 0:04:51- Now see what you've done?- Me?
0:04:51 > 0:04:53Just cover for me.
0:04:53 > 0:04:56What are you doing?
0:04:56 > 0:04:58Hello, can I come in?
0:05:03 > 0:05:06Hey, just going to the bathroom.
0:05:06 > 0:05:09- Everything all right?- Sure, mm-hmm.
0:05:09 > 0:05:13- I thought I heard raised voices? - Nah, it's just Noah going off.
0:05:13 > 0:05:15- Mm-hmm, yeah.- What about?
0:05:18 > 0:05:20A, erm...girl?
0:05:22 > 0:05:24- Maybe.- I knew it.
0:05:24 > 0:05:28- Wouldn't be a girl called Cat, by any chance, would it?- Huh.
0:05:28 > 0:05:31- You both like her, don't you?- Mum!
0:05:31 > 0:05:33All right, OK, I'll leave you to sort it out.
0:05:33 > 0:05:36- But I'm here if you near me, all right?- OK, thanks.
0:05:40 > 0:05:43So why exactly have you come dressed like one of them?
0:05:43 > 0:05:44Less likely to get caught.
0:05:44 > 0:05:46Oh, so it's likelier for me to get caught.
0:05:46 > 0:05:49Lexy, you've got clearance for down there.
0:05:49 > 0:05:52And you're Lena's daughter. Somehow, I think you'll be OK.
0:05:52 > 0:05:54That's what you think. If Mummy ever found out what I've been
0:05:54 > 0:05:57- up to recently, my life would not be worth living.- Come on.
0:05:57 > 0:06:00You know, I don't even think she likes me very much.
0:06:00 > 0:06:02Maybe she thinks she gave the wrong one away.
0:06:02 > 0:06:05- Lexy!- OK, OK.
0:06:05 > 0:06:07Don't get your jumpsuit in a twist.
0:06:08 > 0:06:11PHONE RINGS
0:06:17 > 0:06:19- Hello?- 'The delivery's arrived.
0:06:19 > 0:06:21'I'll meet you at the lift.'
0:06:21 > 0:06:24KNOCK AT DOOR Duncan, I know you're in there.
0:06:24 > 0:06:28- I want some answers, and I want them now.- What is all this noise?
0:06:28 > 0:06:30- Duncan!- Can this wait till morning?
0:06:30 > 0:06:32What? Oh, it's you.
0:06:32 > 0:06:34- I might have known. - I need to speak to you.
0:06:34 > 0:06:37- I don't think so.- Now. - Take it easy, Noah.
0:06:37 > 0:06:39Why don't you just let him in, Duncan, for two minutes?
0:06:39 > 0:06:41And why don't you keep your nose out
0:06:41 > 0:06:43of things that don't concern you, Lieutenant?
0:06:43 > 0:06:46- Remove you foot and go back to your room.- Make me.
0:06:46 > 0:06:48Just hear the lad out, Duncan.
0:06:48 > 0:06:50- What's happening here?- It's OK.
0:06:50 > 0:06:53Go on, Noah. What is it you want to say to your dad?
0:06:56 > 0:06:59Why did you have Cat's stuff? What are you hiding from her, from us?
0:06:59 > 0:07:02- DUNCAN LAUGHS - Listen to the big man.
0:07:02 > 0:07:03What is your problem with me?
0:07:03 > 0:07:06Noah, I think you need to calm down and go back to bed.
0:07:09 > 0:07:13- You haven't answered my question. - Do as the Colonel says.
0:07:13 > 0:07:17Go back to your room, or I'll have you arrested and thrown in a cell.
0:07:17 > 0:07:22All right, Duncan. He's just a kid.
0:07:22 > 0:07:25Come on, you, let's go and get a coffee.
0:07:28 > 0:07:30DOOR WHIRS AND BEEPS
0:07:32 > 0:07:34So, what's the plan?
0:07:34 > 0:07:36Wake them up, get into the room, get some answers.
0:07:36 > 0:07:39You don't think they will attack us, do you? Like Slim and AJ said?
0:07:39 > 0:07:40No.
0:07:40 > 0:07:42DOOR WHIRS
0:07:50 > 0:07:52- Hello.- What are you doing here?
0:07:54 > 0:07:58- Supposed to be cleared...- We've got to go. There's no time for this.
0:07:58 > 0:08:00- They're coming. - MAN: No room in storage three...
0:08:00 > 0:08:03- Cat!- ..we'll leave them in the corridor overnight.
0:08:03 > 0:08:06- It's not a problem. - It is to me, Adam.
0:08:06 > 0:08:07What are you doing up?
0:08:11 > 0:08:13If I catch you wandering around here again,
0:08:13 > 0:08:16you'll be locked up for the night. Do I make myself clear?
0:08:19 > 0:08:23- DOOR WHIRRS AND BEEPS - Now, get into bed and stay there.
0:08:26 > 0:08:29- I have to get back to my room. - You can't, not yet.
0:08:29 > 0:08:31Did you not hear what I said?
0:08:31 > 0:08:34You and the imposter must leave and I must go.
0:08:34 > 0:08:35And did you not to what I said?
0:08:35 > 0:08:36Not yet.
0:08:38 > 0:08:41Alexa, is that you?
0:08:41 > 0:08:44Alexa's, like, my full name, but everyone calls me Lexy.
0:08:46 > 0:08:50Oh, you think I'm her, don't you? My twin, Alexa.
0:08:50 > 0:08:54No, I'm not, but I'd so like to meet her. Can you take me to her?
0:08:54 > 0:08:57Alexa died when she was small.
0:09:01 > 0:09:04- There you go, buddy.- Thanks.
0:09:04 > 0:09:07So, now, what was all that about?
0:09:09 > 0:09:13It was about the stuff we discussed before, you know?
0:09:13 > 0:09:16- The reason why we've all been brought here.- Go on.
0:09:16 > 0:09:19Well, it's basically a research centre, right?
0:09:19 > 0:09:23But my mum can't or won't tell us what she's researching.
0:09:23 > 0:09:26There's definitely something not quite right about it, though.
0:09:26 > 0:09:30And I think Duncan's the key. I...I wanted to confront him.
0:09:30 > 0:09:32- Do you think that's wise? - What do you mean?
0:09:32 > 0:09:35It's not always good to expose your hand to someone,
0:09:35 > 0:09:37especially when you're not sure what game they're playing.
0:09:42 > 0:09:44Do you trust me, Noah?
0:09:47 > 0:09:51- Can I trust you? - Yeah, you can trust me.
0:09:52 > 0:09:54Look, you're not the only one who thinks there's
0:09:54 > 0:09:57- something dodgy going on here, OK? - You too?
0:09:57 > 0:09:59Yeah, I've been doing a bit of research of my own
0:09:59 > 0:10:02and I've... I've discovered something.
0:10:06 > 0:10:08PANEL BEEPS
0:10:14 > 0:10:17Best if I show you. You wouldn't believe me otherwise.
0:10:17 > 0:10:20- Where are we going, exactly? - I thought you said you trusted me.
0:10:20 > 0:10:22OK, what would you say
0:10:22 > 0:10:27if I told you there was a secret underground lab beneath the castle?
0:10:27 > 0:10:29I'd say that it doesn't surprise me.
0:10:29 > 0:10:31There's other rooms and areas down there as well
0:10:31 > 0:10:36which I don't have access for, but I can get us into the lab.
0:10:38 > 0:10:40PANEL BEEPS
0:10:41 > 0:10:44Come on, guys, both of those as well.
0:10:44 > 0:10:47Oh, do get a move on, Marcus.
0:10:50 > 0:10:53We're going to be here all night at this rate.
0:10:56 > 0:10:58- What is it? What were those crates? - It's a delivery.
0:10:58 > 0:11:01- At this time of night?- It must be linked to what's going on.
0:11:01 > 0:11:03- What is going on? - It's best if you don't know,
0:11:03 > 0:11:05I could be dragging you into all sorts of danger. If Lena ever
0:11:05 > 0:11:08- finds I've told you...- What is it you've seen?- Sorry, I can't.
0:11:11 > 0:11:14DOOR BEEPS AND WHIRS
0:11:14 > 0:11:17- You took your time. - We had to wait till it was clear.
0:11:17 > 0:11:19- Sorry about all of that. - Please go now.
0:11:19 > 0:11:21We're sisters, don't you think we
0:11:21 > 0:11:23should try and get to know each other?
0:11:23 > 0:11:26If the mentors catch you down here, we will all be in big trouble.
0:11:26 > 0:11:28Don't be scared, I'm here to help you.
0:11:28 > 0:11:30If we work together, then maybe we can...
0:11:30 > 0:11:33No, you'll ruin everything and put us into danger.
0:11:33 > 0:11:35What kind of danger?
0:11:35 > 0:11:39- Just go, please.- OK, OK, we're going.
0:11:39 > 0:11:41Come on, Cat, we're not welcome here.
0:11:45 > 0:11:46What have they done to them?
0:11:46 > 0:11:48My twin's dead.
0:11:50 > 0:11:53Lexy, I'm so sorry.
0:11:53 > 0:11:55What you've never had, you never miss, right?
0:11:55 > 0:11:57DOOR BEEPS AND WHIRS
0:12:00 > 0:12:04Stack them over there. Got to shift everything in the morning.
0:12:04 > 0:12:06- What's in the boxes?- (I don't know.)
0:12:08 > 0:12:11We'll have to wait until they're finished unloading them.
0:12:15 > 0:12:18- Noah.- Yeah.
0:12:18 > 0:12:22- What happened? What did you say to Dad?- Nothing.
0:12:22 > 0:12:25I managed to wake Casey up, too, then Gaia's dad.
0:12:25 > 0:12:28It suddenly didn't seem like the right time.
0:12:28 > 0:12:30But Casey stepped in, actually,
0:12:30 > 0:12:32calmed things down. He was on my side.
0:12:32 > 0:12:35Yeah? Well, while you were out making a new best friend,
0:12:35 > 0:12:38- I was busy keeping Mum off your back.- Yeah, but he was going to...
0:12:38 > 0:12:41Noah, if it's OK with you, I'd like to get some sleep now.
0:12:47 > 0:12:49Let's take a look in those boxes.
0:12:49 > 0:12:52No, I want to go now.
0:12:52 > 0:12:55It could be a clue as to what's been going on.
0:12:58 > 0:13:01DOOR WHIRS AND BEEPS
0:13:08 > 0:13:10METAL CLATTERS
0:13:48 > 0:13:50MAN'S VOICE: Lena?