Original subtitles

This programme contains some strong language

I'm on a train called the Heart of Britain.

It's the Glasgow to London night service.

The wiring in the floor's been tampered with

and there's a device attached.

One of the UK's biggest antivirus firms has a virus.

Just leave it to us.

Before we left the station, there was an incident on the platform.

A lad stole a bag.

Police!

It must have happened then.

Saj, the critical infrastructure that uses the antivirus? Yeah.

It's not the UK rail network, is it?

Is it an explosive device? No, it's a hacking device.

There's currently an Interpol red out for someone on that train.

What are the chances? This is ridiculous.

Hey!

He actually used to be a DI in the Met.

Who's going to have operational control? You are.

You mean it? Do not, under any circumstances, call Paul Peveril.

They're saying it's left the station again

with some passengers still on board, but without the driver.

Any driver.

Every train across the country stops right now.

Mouse! Mum!

Passengers are reminded that that my name is The Driver.

I'll help you. But you're going to have to help me too.

Why would I possibly do that?

I mean, how can I trust you?

Abby? I know what you're thinking, how it looks, but

I haven't hurt anybody, all right?

I was one of the good ones, I was.

I haven't done anything.

And right now, we need each other.

So all I'm asking is that when I've helped you,

you keep me out of custody till my trial.

OK?

OK. Here's how it starts.

You need to ask the police to track down

the two guys who ran out of Glasgow Central.

We need to know where they came from and who they were with.

I'm just going to find out.

Yeah. I'm going to put you on hold. Meg, look after this. OK.

Mate...

PHONE BEEPS

What's going on?

What are you doing?!

Excuse me. No, not now. Hi!

I'm Abigail Aysgarth, acting technical director

of the National Cyber Security Centre across the road.

I'm...aware of all the glitches across the network.

Can I check your systems?

Er...

OK.

Cyber security? Good luck.

What problems have you got in here?

Well, you know that all trains have been grounded, every single one?

Yeah. I ordered it.

Well, look at that.

RTV - Real-Time Train Viewer - should show the position

of every train in the country at any given moment.

It's how we stop them colliding.

The whole system's down.

Network's currently littered with passenger and goods trains,

all stopped where they shouldn't, when they shouldn't.

So we're just blind.

I hope your message got through -

because if any are still moving, they won't be moving for long.

Hey! Could you step away from that, please?

Do you know what's happening? I know the driver's still on the platform.

What?! Right, I need to get into his cabin.

You can't. There's no driver.

We need to get into his cabin now. OK.

A Class 94 is not accessible when moving.

Door to the driver's cabin's at the front.

That's why they put an engine between us and it.

Close it up.

I thought you wanted us off? Where's that cop?

Why are we moving? My lad's still on the platform.

He's still at the station.

Has anyone seen the boy? Who's still on the platform.

You all right, mate? Yeah, I'm OK.

His mum's been left behind.

Give me my phone. One sec. Is this to do with the hack?

What?

What?!

The wiring was tampered with in the manager's office

before we left Glasgow.

There's been a device installed,

and a phone jammer that's presumably

meant to stop us from doing anything about it.

By who?! I don't know.

But he's been in touch with the National Cyber Security Centre

through that.

PHONE BEEPS

Call through to the driver. We need to go off at Carstairs.

He isn't on board either.

What?! What?! What?!

What?!

Billy? It's true.

Who's driving, then?

I don't have all the answers.

Cyber Security Centre has actually got me on hold at the moment.

No, someone else is in there.

Someone else is driving this train.

Yeah, someone else is driving, but not from in there.

I think we're being controlled remotely.

Yeah. I don't follow.

We appear to have been hijacked.

Hack-jacked.

Hijacks are so 20th-century.

It just ran a red before Wishaw Central.

It should not be able to do that.

The red should trigger an automatic safety response on the train,

putting the brakes on.

What, the fail-safe failed?

Yeah, well, antivirus does have a virus.

And, Abby? The minister is still on board.

Look, I've set up calls with the train operating company

behind the Heart of Britain and Five Eyes to see if anyone

has any idea who or what this driver might be.

Yeah. Yeah, OK.

Listen, you need to prioritise regaining access to something called

the Real-Time Train Viewer over everything else.

Right now, we literally have no idea what's around the corner.

Abs?

Meg, this is not the night for Marrakech.

Well, yeah, well, I would go home, but you've cancelled my train.

Look, is there any way that you could stay in the station

and let me know if anything else appears on those boards?

ON PHONE: Yeah. Er, one question. Er, yeah?

How? Er...

I don't know, but maybe it's worth us trying to track back the guys

who ran away from the police at Glasgow Central.

Who were they with? Where are they going?

That is a police matter.

No, everything tonight is a cyber matter.

And if you could check out the DI's case

and get a comms plane dispatched to fly over the train

and figure it all out, in the time that it takes me

to climb seven flights of stairs. I would really appreciate it.

Hey. I'm so, so sorry.

Mmm.

I need new friends!

Yeah? Yeah.

All right? Yeah. OK.

Right, good luck. Hwyl fawr! Love you.

It is impossible for anyone to operate this train

without a driver. I disagree!

On what basis? It fucking is doing!

Hey, hey! Ray? He's an old man.

I'm not too old to deal with you, pal.

ALL SHOUT

PHONE BEEPS

Joe? Shush!

Shush!

Hi. Have you got an answer for me? Yeah.

We are looking into your case.

But listen, the Transport Secretary is on that train,

and I need you to give this phone to her.

Which one of you is a Transport Secretary?

What? Erm...

Hello, everyone.

They want to talk to you.

Jesus.

The one person I wouldn't want in charge of a situation like this

is a member of this government.

That is so bloody true.

Oh, please tell me I'm not stuck on this train

with a bunch of bloody Guardian readers!

Sh! Hello. This is Liz Draycott.

Why don't we just... Why don't we just stick with this guy?

Yeah, that's not going to happen.

Why not? He's the hero of Glasgow Central.

He is the reason the police were at Motherwell.

Do we really have to bring this up now?

Are you at the train manager's office yet?

Look, I need to make a lot of calls.

You're not making any calls.

Sorry, what's your name?

It's Abigail Aysgarth, acting TD at the NCSC.

Well, listen, Ms Aysgarth,

I'm the permanent Minister for Transport.

And I have to tell you, being trapped on a train without a driver

is the worst possible development for me,

so calls are going to be made.

Now, I need to ensure that I am off this thing

before anybody else out there knows I'm on it.

That phone is used to converse only with us and to connect to the SBC.

That little flashing device in front of you with the aerial on it, yeah?

That is what's controlling the train now.

I need you to link the two by USB and get me that phone's IP address.

Do you have any idea how to do that?

I co-sponsored last year's ICT and telecommunications bill.

Do you have any idea how to do that?

No.

That's OK. I'm going to put you through to my colleague

who will talk you through the plan.

And we're going to pull all the data from the SBC,

put it in a little safe place called a sandbox,

figure out how to stop it and get it right back.

OK?

OK.

Hello, Minister. Tobi here.

OK.

Well, look at you!

What, dressed for Marrakech?

Sounding like a technical director.

Hey...can we skip the hugs and get straight into business?

And that is why I like you.

There's been a hack check in.

Hey, my colleague's coming down in a minute, but can we...?

Sure.

It's the Heart of Britain night sleeper service

from Glasgow to London.

Oh, the new 94s with the Mk 16s?

Yeah, I believe so.

There appears to be phone jammers on board

which have delayed raising the alarm.

Hand over your phone, please, sir.

What about UK Rail?

Under attack from its own antivirus.

But we have still got control of the points,

most of the signals.

Most of the trains are grounded.

There's glitches everywhere.

And we haven't got access to something called the RTV.

So you can't see anything that's in the train's way.

Can't we just cut the electric?

West Coast Main Line, that is electrified, isn't it?

Won't that stop it? Not with the Class 94s - they're bimodal.

What?

They've got diesel backup. They can still run for hours.

No, you need to speak to the TOC.

Who? The train's operating company.

The thing is,

they're built by X, owned by Y, leased by Z, maintained by...

Oh, should've started with a lower letter, shouldn't I?

You've got TOCs, ROCs, ROSCOs, DUs and FOCs.

This is why I need you.

Abby.

Could I...?

You did tell her I was coming?

Ma'am... In private.

This must be very painful for you.

This man has upset everyone it's possible to upset.

I called it, you ignored it, and now look where we are.

He is the Michelangelo of mansplaining.

I know stuff that other people don't.

Am I meant to keep it a secret?

You leaked confidential information to the public.

I tried to alert the public to the dangers because you...

Because you thought you should have my job.

You Liz Trussed your way into that position, ignoring every warning,

and now you've just got to accept... He leaves! I'm leaving!

Do either of you even care about the people on that train?

This is not the time for "I told you so's".

And, ma'am, this is currently a severe threat to life

and nobody understands the complexities of transportation

better than him.

Please put your faith in me and let us through, cos,

well, my pass is at home,

the only thing I've got in my pocket is £200 worth of dirham,

and I'm pretty sure the guard's not allowed to accept that.

Yes!

Erm, the minister has, somewhat reluctantly,

granted us access to the SBC. We're pulling the data now.

What I always say - there's the right way, the wrong way

and the railway.

Oh, God. It's Obi-Wan in a gilet.

Still can't do lifts.

LIFT: Doors closing.

So I searched this property when I was with the drug squad.

I found some cash, booked it in,

then the suspect comes back and claims there was a load more.

That's what they do, they try and hold things up.

Only then, Professional Standards are on it.

They decided I'd taken the money.

You were charged?

I didn't take anything.

You ran, though. I went into hiding, yeah.

Don't take that as a sign of guilt -

take that as a sign I wasn't too keen on being locked up

with the person I just arrested.

What a bag of shite!

I'm still on here because of you.

They knew they had to get us all off,

but they couldn't open all the doors because of you.

Excuse me. We're ALL stuck on here because of you.

You're still here cos you wanted to finish your drink.

Look, I'm sorry.

It's OK.

How is it OK? I think you need to leave.

I would if I could.

No, down the other end of the train, away from us.

Mmm. Yeah. Agreed.

Yeah.

So...

..are you going to go willingly...

..or not?

Right, we have pulled all the data from the SBC and isolated it.

Now, the code is camouflaged, but I'd hope we'd be able to crack it

and use a satphone to put it back onto the train within half an hour.

What about the RTV?

Yeah, OK. One thing at a time, all right?

Yeah, that's not going to work tonight.

PHONE BEEPS

That was triggering.

Standing between two old people who hate each other

is taking me right back to family holidays.

Elvis is in the building!

MURMURING

Er, yeah, for those of you who remember Pev,

this is his comeback special.

Catch him here tonight for one night only.

And for those of you who don't,

well, try not to be offended cos that is just the way he is.

Where is everyone? Trying to contact them.

There's quite a lot of "Do not disturb". OK.

Er, Pev? Yeah. Take over Saj's desk.

You're in charge of taking control of the RTV.

Hang on a minute. What are you doing? Do you understand it?

I'm getting there, all right?

Do you? Better than I understand myself.

Hmm!

Right.

Ma'am, even though we are acutely aware of the unprecedented events,

I am confident that we can bring this under control within minutes.

PHONE RINGS

OK. Sorry.

All ready?

All ready.

ANNOUNCEMENT: ..are reminded to pay 600 Bitcoin

to account 3FZbgi29cpjq2GjdwV...

Erm, it's about ten million quid.

..or London really will be its final destination.

What does that mean?

It means the train is now a guided missile.

Really? Yeah.

DEVICE BEEPS

All right.

OK, everyone.

Everybody? Up here.

It's almost 0100 hours, and a ransom demand has just come in,

which suggests we are dealing with organised criminality here.

Leon, I want you to lead a team focused on the antivirus virus

and ensuring we keep control of as much of the rail network as we can.

Zed, you're all about the train.

I want you to pull as much cord as you can from that SBC,

work in the sandbox and find that kill switch.

Then we can send it back to the SBC via the minister and the satphone

and regain control.

Both of you report to Saj.

Saj, report to me.

Right?

Come on!

This isn't some company going down, this isn't money being lost -

this is imminent threat to life and this is on us.

Tobi? The minister?

She... She hung up.

CALL DISCONNECTS

OK, great.

Where were you going? Oh!

You've got a bad habit of appearing out of nowhere.

Tell me I'm not the only one who can see you.

I mean, if you were hiding, like...

..what's made you come out?

Why WERE are you going to London?

You're not getting out. We're stuck in here until it stops.

I'm not.

I'm not.

BANGING

GRUNTING

DEVICE CHIMES

Oh, fuck.

Mark Hudson, senior field at security,

liaising with Police Scotland and military response.

Anything that isn't our domain is his.

Hud, this is Abby, acting TD.

What? Where's Pete?

Peter's been off for months.

You know, I really think we could do with Peter tonight.

Peter is at the point where every single incoming email

is causing his... You thought it was fine for the technical director

to go on their holidays. Now you think we need two?

Yeah, well, a lot can happen in an hour.

Get him in. No.

Abby...is definitely in charge.

Gave you a job to do.

Firstly, and most importantly,

I do not work for you, I work with you.

Never, ever forget that.

Secondly, we have dug into a shitload of CCTV

from Glasgow Central and we don't believe that anyone else

boarded the train or left it in the ten minutes of interest

leading up to its departure.

So whoever installed the SBC carried on to Motherwell?

And is either one of the majorly pissed off 108 people

we're currently holding in the waiting room there, or...

One of the 12 still on the train.

Not the policeman, though. Former.

He's the only person who actually stays inside of the cameras

for the entire ten minutes.

Did you look into his case, the detective?

Yep. Sending over the details now.

He's got multiple commendations from his chief.

His record was basically A1

until he tried to slip 200K into his back pocket.

Oh, he's done close protection and K&E hostage negotiation.

We could be lucky that he's on there.

We will not be working with him again.

Can you put Special Forces onto the train from the air?

Subject to ongoing assessment,

but the initial response was "Not at this speed" -

too many tunnels, bridges and overhead wires.

You are aware there's been a demand?

Yep, some twats already tweeted it.

Six twats retweeted that.

Seven, eight...

Hud, Abby has been working on a strategy that could allow us

to crack the code in a sandbox here

and use the satphone on the train to inject it back into the SBC.

Nicola, I don't know what the hell any of that means.

We could stop the train.

Clearer.

Is the electronic intelligence aircraft on its way?

A comms plane? We ordered one.

This isn't Deliveroo, my love. You don't order - you request.

We need to know how that single board computer is being controlled.

I'll take it up the chain.

Room's ready for Cobra, ma'am.

And BBC News are chasing for a statement.

Let's reveal that the network is currently subject to a cyber attack,

but keep the fact that there is an active hostage situation

out of the public domain until we've resolved it.

And how long exactly might that be?

Minutes?

Minutes.

And there won't be a collision before then?

We can't say that because we can't see anything.

But what I can say is that we've got our best man on it.

COMPUTER CHIMES

So sick to get to work with you.

Everything you've done since going private, it's like...

..pretty much the model for me.

Well, it shouldn't be.

This, here, if it works - if it's allowed to -

is the best place in the world.

I'm...only here for the toys.

If I had it my way, we'd get rid of governments all together.

Sure a good algorithm could do it better.

Oh, God help us.

He wouldn't need to any more.

Oh.

PHONE: You've reached the voicemail for Daniel Geoghan. Leave a message.

I've got every faith in you, Pev.

Yeah? Well, normally...

..that would be well placed, but...can I...

..tell you something in confidence?

I am currently under the influence

of my first Class A substance since the '90s.

It's been six years since I left HQ.

I thought it was finally safe to, you know, let my hair down.

You got any more?

I can get rid of it.

Take it.

This is no time for a come-down.

Can I help you? I'm assuming class divisions no longer apply.

Criminals and standard.

You remind me of my dad.

Oh!

I hate my dad.

I won't be checking tickets.

Hi, everyone. I'm Billy and...

..my colleague Yas will be getting everyone's details

for the authorities.

Delay Repay is not going to touch the sides here.

This is a train operator's dream - driverless train on the main line.

They won't see this as a warning. They'll see this as the future.

Christina Doolan, 223 Haverty Street, Ealing.

Are you OK?

I've been better. Aye, and been worse.

ARRAN: Guys. Guys!

We're going to be all right.

How will we? Can you imagine how many Government agencies

are involved in this right now?

We will be fine!

CUTLERY CLATTERS

What are you doing?

I'm just making a note of everyone's names.

What?

Why?

I'm...a journalist.

Oh, for f-...

Yes, I'll hold.

That... That's my private phone.

It's been nationalised.

I really need it tonight.

Not as much as me.

Thank you for holding. I'm afraid the Cabinet Secretary

can't be reached at the moment, ma'am.

Yeah, I don't think you understand how important this is.

TOBI: Abby? Got the CCTV back.

It shows the guy who snatched the bag at Glasgow Central

meeting the woman he snatched it from an hour earlier.

It was her bag he snatched.

And what happens between this and Glasgow Central?

OK, so these three go straight to the concourse,

but the one with the pram goes into a hotel near the station,

is there for about 25 minutes.

Why not go straight to the station too?

Speak to Hud, see if they can get footage from inside the hotel.

If not, get it yourself.

I know you didn't take it - the money.

If you'd taken loads of money, you'd have better clothes.

No, I mean, like... I like your clothes, but...

I think you look quite like me.

Yeah, like a mirror.

No, not now, but when I'm older

or you when you were younger.

You got kids?

CONVERSATION IN FRENCH

Er, je...

Who is this?

Er, it's the guy from Voya Rapide.

The company that runs the Heart of Britain is French?

Yes, well, the TOC is.

But the carriages are owned by a ROSCO that's German

and the locomotives run under contract by an FOC that's English,

who leases them from a separate ROSCO - Spanish. OK?

Abby. Acting technical director.

PHONE TRANSLATES

We're trying to establish whether you're aware

of any vulnerabilities within the train's systems

that might have enabled this?

PHONE TRANSLATES TO FRENCH

TRANSLATION: There have been no issues at this end whatsoever.

Our systems and our partners are robust.

HE SPEAKS FRENCH

And it's clear to us that generational underinvestment

in your transport network is to blame.

HE SPEAKS FRENCH

This is a UK issue, not a French one.

With all due respect, this is not the time for...

Good work, director.

Hey, I know this is awkward, OK? Mm-hm.

Obviously, when I said what I said this morning,

I wasn't expecting to be spending the night with you.

I'm not bothered about that, all right? You seem bothered.

If you want to end a relationship the night before you go off

on your wild weekend? Relationship? Slightly overstating it.

OK, so it wasn't even a relationship now, yeah?

Hey, for you not to call me

when you found out about the virus just because you were...

Oh, my God, I did not call you because you were on holiday.

I was at the airport!

Yeah, well, I didn't know your flight was delayed.

PHONE BEEPS, LINE RINGS

Minister, pick up!

PHONE RINGS

RINGING STOPS, SHE SIGHS

LINE RINGS

Excuse me.

I've got the details of everyone still on board.

Have there been any messages for me? Nope.

When there is - WHENEVER there is - can you let me know?

Mm-hm.

PEOPLE CLAMOUR, PHONE RINGS

We're dealing with it. Now, go on...

INDISTINCT

Hello?

Kate, it's me.

Oh, my God, Liz! Are you OK?

What do you think?

There's a multi-agency response under way.

They're throwing everything at it. We need to come up with a strategy.

Liz, you're in the middle of a critical incident - forget policy.

You need to speak to Downing Street, Kate.

This isn't just about cancelling next week's announcement.

This is about... Liz, we're all acutely aware

that something like this happening a few days before...

Remove all traces of it, OK?

All traces.

Do we have access to the RTV?

We have progress.

Not the same thing.

Ma'am.

Abby, a word in private.

Hud has been instructed to get the military fully involved and ready.

No-one is going to pay that ransom,

so if we don't take care of this - if YOU don't - they will.

And things may get very, very messy.

Does anyone object to me having a drink?

No, I think that's a good idea. OK.

So what is it you do, then? Ignore reporters.

The prices are in there.

I'm not paying.

Now, come on. The least you can do is make this a free bar,

considering the circumstances.

I think alcohol is the last thing we need right now.

Ha!

You speak for yourself, eh?

Actually, I'll have a glass of something.

There we go, that's the spirit.

Now, everyone in favour say aye.

IN UNISON: Aye.

We're making progress on the SBC.

Where are you at on the network virus?

I'd say we're looking more in terms of days.

Er...

Do you know the problem with this place?

It's that I never really fully feel confident

that the person I'm talking to hasn't spent their weekends

rifling through my phone and email.

Mmm.

It's not the same for you, Leon.

You know the red lines.

You need to forget them tonight.

Get in to Voya Rapide's systems. Do whatever you need to do.

I think they're covering something, a system weakness.

If we can find their vulnerability, we can patch it.

Mmm?

Yeah.

Do that and you're dead.

They slow it down when we corner.

Big corner, big chance.

Abby, I think we're almost there with the code on the SBC.

If we could have communication back with the train to upload it,

we should be able to stop it. Great.

PHONE: You've reached the voicemail for Daniel Geoghan. Calling her.

Leave a message.

Minister, we need that phone line!

OK, let's do this.

Ready? OK?

COMPUTER VOICES: We regret to inform you that...

..we regret to inform you that access is denied...denied.

See it, say it, sorted... See it, say it, sorted...

NICOLA: What's happening?

It's a tripwire.

The SBC's interface basically appears to be cloning itself

many, many times, hiding the real one.

Meaning?

It's not one step forward, TWO steps back, ma'am...

It's about 7,000.

Yeah, and counting.

We regret to inform you...

You having a drink? No, no. No.

Thank you.

Come on.

Oh, no, I don't...

You're one of us now.

Quintinshill soon.

What?

Quintinshill.

Worst rail crash in UK history.

230 dead.

Many more injured.

Many, many more.

You really think you can make it?

Soon find out.

What about me?

I could have said, you know, that you were in there.

But I didn't cos I knew you didn't want me to.

So why won't you do something for me?

Don't leave me.

All right.

All right.

How is it possibly all right?

They're taunting us.

How long will it take now to find the right interface

and do what you thought you were about to?

Not minutes. We haven't got hours.

When the minister calls back,

I could try and play with the SBC directly and drop the sandbox.

This isn't a game.

This is about people's lives.

We test everything first.

Speed it up,

and put Saj back in charge of regaining control of the RTV.

We need it now more than ever.

This isn't an accident waiting to happen -

it's a massacre.

And your pick...

..is doing nothing to change that.

He is working on it.

Is he?

Is he under the influence of something?

Ma'am, he's trying his best.

And I'm doing mine.

PHONE RINGS

Minister, hello.

Oh, hi. Are you ready for me to connect it again?

Hello?

What have you been doing?

Look, I told you, didn't I?

Right, I've got a list, the host has,

of the people still on board.

Do you know how long this will take? I've got a lot of calls to make.

Hello?

Hello?

Is the host there right now?

Yes.

Could you pass the phone to him for a minute, please?

What? Please?

It's the cyber security centre.

They want to speak to you.

Hello. Hi. Listen,

I don't want you to give this phone back to the minister.

I want you to turn around, find the policeman

and give it back to him.

Where are you going?

OK. Even if we did crack the SBC just then,

we couldn't have stopped the train

because we didn't have contact with it.

Excuse me!

Why? Because the Secretary of State

seems so focused on saving her own skin.

She's in a very difficult situation.

Well, what the fuck are we in?!

ALARM BEEPS

You told me that I was in charge.

This is what it looks like.

And if I have to make promises I can't keep, then I will,

because I don't care what this guy might have done -

I care about what he CAN do.

You're all the same.

And you accept full responsibility for that choice?

I do, ma'am.

PHONE CHIMES

Five Eyes in your office. Two minutes.

KEYBOARD CLACKING

Nothing by 1:30...

..and Elvis leaves the building.

Excuse me. What's that light for? Sorry.

OK.

Do you know that Peters left?

Couldn't they get him back for just one night?

Hey. Sorry I'm late.

If you have any leads on this "Driver", now is the moment.

I'm sure we'd all accept that, after Russia and China,

there is one state that hacks on an industrial scale

that we do not like to talk about.

And I think we're going to have to discuss "l'elephant dans la piece",

don't you?

Yeah, but France doesn't hack French companies, does it?

It hacks us for them, so...

My team is going to send through everything they can

about something called the Blue Blockade Group - BBG.

Well, er, I know it,

but they've never done anything like this before.

No, but our latest HUMINT suggested they were planning to.

And where are they getting their resources from?

They're a group based out of Tehran.

No-one's really thinking the fact that your Transport Secretary

is aboard is a coincidence, are they?

I think we all need to accept this is just as likely to be

the work of a politically motivated group as it is organised crime...

AUDIO DISTORTING: ..and I know that is not what you want to hear.

No...

Yes! Huh?

VIDEO GAME: Yahoo!

Hey!

What have you done that for?

You might like it on here.

I mean, you're getting paid.

Should the chance present itself,

I think the rest of us would quite like to get off.

Here.

She wants you.

DISTANT: If you had HUMINT, why would you not share it?

We have to protect our sources.

We have to protect each other.

Yes, but if I may...

Abby? Are you there.

Joe? Where is she going?

Apologies. This is a very difficult situation. Joe.

I'll do my best for you...

..if you'll do your best for me, OK?

You can't choose a criminal over a member of Parliament.

In the Venn diagram of the two?

I think there may actually be quite the shared area.

I'm not a criminal.

I was wrongly charged with a crime.

Minister, he's the one who called us,

he's the one who's trained for this,

and he's the one who I believe

has the best chance of stopping that train, OK?

Abby, I'm all yours.

What do you need?

I really don't like how dependent we all are on that one phone.

I'd feel a lot better if you could

find that phone jammer and shut it down.

Do you know what you're looking for, Joe?

Yeah, I think so.

Right, it's about this big,

it's got an antenna on top, its own power supply.

Check the bags. Every one.

About the size of a shoe box.

Abby. Comms plane's almost reached the train, ready to scan a signal.

We should know exactly what's going on in there within minutes.

Thanks. Tobi, stay with Leon

and report straight back to me the moment you have a result? Yeah.

Ma'am. Mr Peveril.

Er...

Oh.

ROCK MUSIC BLARES Woo!

Did you do it?

Did you doubt it?

Send it. Sent!

Oh!

And with the Heart of Britain's location in real time,

you're welcome.

Woo!

When I grow up, that's who I want to be.

What's that?

It's a goods train.

Stalled.

With its engine and half its load straddling the West Coast Main Line.

JOE: All right, you keep searching here.

I'll check the next carriage.

I'll help.

Stop that!

Hello, West of Scotland Signalling?

Hello, Cowlairs. This is Abigail Aysgarth.

I need you to move what appears to be a substantial goods train,

currently stationary on a stretch of track,

crossing over two lines at Gretna Junction.

Can you do that immediately for me, please?

No.

Excuse me? That is beyond our jurisdiction.

You'll need to talk to the control desk down at Manchester.

On it.

Ma'am. TV: All trains have been

brought to... That's our train. Social media footage...

No! ..suggests some are still moving.

Got it.

OK, Manchester,

0161 496 9865.

Direct comms with maybe two thirds of our trains are currently down.

Do you have a mobile number for the driver, maybe?

I thought we did, but it seems to be out of date.

A name, then?

Erm... Harvey Driscoll?

Pev. Yeah.

Control, what are the goods on the train?

Tankers. Containing?

Natural gas condensate.

OK, thank you.

Driver. Already ringing.

LINE RINGS

Come on, come on!

Come on.

What else have you got?

Abby, what else have we got?!

Abby? Are you there?

Joe. I found something.

Hey, hey, you need to move everybody

out of the front carriages and prepare for impact.

What? Why?

There's a train on the line in front of you.

PHONE RINGS

Hello? Hiya. This is Harvey Driscoll. Harvey! Harvey!

Harvey, hello. This is the National Cyber Security Centre.

We need you to move your train fully off the Glasgow South Western.

All trains are currently grounded, I'm afraid. Harvey...

I'll try and give it... ..I need you to move your train.

..can't guarantee anything. We've spoken to the control desk.

Er... Listen. ..I've got very little battery.

What's that?

There is another train that's not grounded

and it is moving towards you.

Well, stop that, then...

LINE DISCONNECTS

We can't... I...

Everyone needs to move down the train now.

Why? Now! Now! Come on!

We're going to hit something.

Hit what? That!

Come on!

LEON: Estimated time till impact, 90 seconds.

Oh, Jesus! Come on!

SHOUTING

Come on.

Come on. Quick.

Come on!

LEON: 70 seconds.

Look.

ENGINE RUMBLES

Come on, quick. Come on!

PEV: It's moving.

WHEELS SQUEAL

Joe?

Come on!

30 seconds.

20.

Come on, come on, come on, come on.

Get up. Get up. Come on.

Ten seconds.

ALARM BEEPING

SHOUTING

INDISTINCT SHOUTING ON PHONE

Joe!

Joe?

I'm not sure the person who installed that device

is in the waiting room at Motherwell.

I found a firearm.

Don't trust anyone.