Original subtitles

Paul. The Llandarcy job is yours.

Hang on! Stop there, please, sir! No, no, no...

No, no. That's my daughter! That's my daughter! No!

Thank you. And thank you for trusting me.

Stepdad. Dai Williams.

Did you look at him? Alibi -

out driving his taxi that night.

Comparative mitochondrial testing has shown a compelling link

between Sandra Newton and Geraldine and Pauline.

You're dealing with a serial killer and all that comes with that.

I thought this day would never come.

He might still tell us to bugger off.

Well, he might.

What's the plan then?

Turn the other cheek.

Tea and sympathy till we get his DNA.

DI Paul Bethell.

I remember you perfectly, thank you.

May we come in, Dai?

Hello, Pat.

HE SCOFFS

PHONE RINGS

TYPEWRITERS CLACK

Christmas came early.

To be opened later.

How the hell did you get this?

Can't tell you, mate.

Chris Wynne? I said I can't tell you!

SOMEONE CLEARS THROAT Gentlemen.

Right. Listen up.

I urge you to remember this.

The parents of both girls are adamant, absolutely adamant,

they were sensible lasses

who wouldn't have got in a stranger's car.

So, anyone with links to the girls,

even just a casual acquaintance,

goes to the top of the list.

Yes, Bethell?

Sir, I really think we should be looking

at Sandra Newton alongside these girls.

Her stepfather, Dai Williams, is worth another look.

Did you not hear me the first time?

Was I, uh, unclear?

Did I mumble?

No, sir.

Did I not say we stay focused on Geraldine and Pauline,

come hell or high water?

Yes, sir. Good.

You and Philip are on tapings.

Tapings?

Detective Sergeant Jenkins will show you the ropes.

Here we go, boys.

PAUL: We're reopening the investigation into Sandra's murder,

and we thought you should hear it first.

Why?

There's some new DNA evidence, Pat.

Tells us certain things, important things.

Sandra was killed by the same man that killed

Geraldine Hughes and Pauline Floyd.

No.

It's the DNA, confirms it.

It's John Dilwyn Morgan, isn't it? Got to be.

I always said he was soft in the head, didn't I?

Bothering Sandra when he had a wife at home.

Have you checked his DNA yet?

No, not yet, Dai. Well, what are you waiting for?

We haven't checked anyone's DNA yet, but we will.

We'll be mounting a targeted swabbing operation.

When the police told me about Sandra and John Morgan...

..I think they expected me to be shocked...

..and think less of her...

..grieve less for her.

Was I thrilled about her seeing a married man? No.

Did it mean anything in the face of losing her?

What's a targeted swabbing operation?

Basically taking DNA from lots of men...

..to find a match for our killer.

I'm afraid that'll include you, Dai.

Me? It's just for purposes of elimination.

As Sandra's stepdad, we have to clear you, that's all.

Oh, you do, do you?

"Purposes of elimination."

I like that. Nice.

Is it his blood?

Sorry, Pat? You say the DNA tells you the same man

killed Sandra and the Llandarcy girls.

Is it his blood?

Erm, no.

No, the DNA profile was taken from his semen.

There you go.

Morgan was seeing Sandra, we know that.

It's got to be him, right?

There is something else we need to share with you.

The DNA tells us that there was semen

from two different men on Sandra's clothes.

Now, if one was a result of Sandra and Morgan being intimate...

..that suggests the other was left by her killer. No.

No. We were told over and over she wasn't raped.

Over and over.

We were, weren't we? We were.

Categorically.

See? She wasn't raped.

She wasn't.

She and Morgan had a row,

and he lost his head.

And it was all over quick.

Very quick.

SHE WEEPS

I'm so sorry, Pat.

DNA, it's like, um,

a very powerful torch.

It lets you see in the corners that you couldn't see into before.

Well, that's a good thing, is it?

That's a fair question, Dai.

"That's a fair question, Dai."

Don't insult my intelligence, OK?

Just don't.

I was on CID's shit list from day one.

Dai... And I have it on very good authority

that you were the one who put me there.

If you were a gambling man...

Yeah, which I'm not.

That's why I said "if", Phil.

He looked like a worried man.

"Might do a runner" worried?

Who might do a runner?

Oh sorry, Geraint. Erm, Dai Williams.

Sandra's stepfather.

Taxi driver, perfect cover, didn't have an alibi for the three murders.

Did he own an 1100?

No, but, er...

The drivers shared cars back then, so could've got hold of one easy.

We've had a new e-fit from one of the rape victims.

Oh, and that's a '73-era photo of Dai Williams.

We won't be taking his DNA, then?

Thank you, sir.

Not so fast, lads.

We have another proud owner round the corner.

Mr Joseph Kappen.

Right, rinse and repeat.

I'll get his statement, you do the car.

Catch.

KEYS JANGLE

If this lands on my foot, I'm blaming you.

How's that?

"I really think we should be looking at Sandra Newton, boss."

We should!

Not even trusted to take a statement!

One more fucking word, all right?!

Thank you.

Right, we're off. Give her back the keys.

Thank you, Mrs Kappen.

Well?

The car's been on bricks all summer.

What else? What was Kappen like?

Bit of an oddball.

Think it's worth speaking to the neighbours?

Check the bricks story?

I'll put it in my report.

Uniform to follow up.

And I'll make another suggestion.

Smarten yourself up, Bethell.

We're the public face of the constabulary.

Remember that.

Right. Who's next?

Press conference?

I'm not gonna lie to you, I'm bloody bricking it.

Say the wrong thing, the wrong body language,

the press jump on you.

Becomes the whole bloody story.

Oh, that's not the spirit.

I know, I know.

Just be yourself.

When you talk about the case, the girls, the families...

..you're impressive.

People listen.

I listen, OK?

OK.

RADIO IS ON

Ugh.

OK. What is this?

An empty milk bottle?

Ha-ha.

Come on. Fess up.

Why does she always think it's us?

It's like living with a bunch of students.

I'm off.

Oh, I can run you in if you want.

I'm fine. Sure? Yeah.

Love you. Love you.

Ta-ra love. Ta-ra.

Love you. Love you. Love you! Love you!

LOVE YOU! LOVE YOU!

Bus is good for her, socially.

I think on some level, she knows that.

You're the expert.

I am. Love you.

I know.

You OK, Paul? Yeah.

It's just, erm, once bitten, you know?

We had a right shitshow with the press back in '73.

Still bear the scars.

Well, don't worry. I wasn't expecting you to say anything.

You weren't? No.

It's important you're here, but I'll be doing the talking.

Right you are, ma'am.

Thank you for coming, everyone.

South Wales Police are today commencing the reinvestigation

of the unsolved murders

of Geraldine Hughes and Pauline Floyd in 1973.

A breakthrough in DNA forensics

has now formally linked the murders of Geraldine and Pauline

to the murder of Sandra Newton in July 1973.

In other words, we are now actively trying to find

and apprehend a serial killer.

The killer is still out there enjoying their freedom,

enjoying their life,

but we are committed to bringing them to justice.

Operation Magnum will involve an intelligence-led

DNA swabbing campaign,

and we are asking the public to cooperate, come forward

and assist the investigation with any information they may have.

Someone out there knows, or suspects who this man is.

We only need a name.

Why are you wasting time on old cases

when the crime rate's through the roof?

Sadly, the passage of time takes nothing away

from the horror and pain

the families of these girls have endured.

Therefore we will do everything we can

to bring this man to justice

so they can experience something resembling closure.

Hey, he smashed it, Jackie couldn't get a word in.

Freezer's arrived, boss.

So I see.

All right, we're in business, boys.

So, we store the DNA swabs here

and then we submit them to Colin Dark at the laboratory.

Daily? Weekly?

The first of every month.

Before that, we need a prioritisation matrix

to determine the first batch of 500 men for swabbing.

What's that when it's at home?

A way to triage our top suspects.

See, now I understand.

I did a course on prioritisation matrices once.

A man of hidden talents. Just a two-day thing.

It was that or health and safety.

Oh, speaking of which, it's incumbent on me

to warn you that most of the case papers in there

are plus 25 years old,

so there's a danger of paper mites and associated allergies.

Good to know.

The matrix, what parameters are you scoring?

Well, were they suspects back in the day and/or

resemble physical descriptions provided by key witnesses

and/or own a white Austin or Morris 1100?

Then your usual markers.

We need to go back through the files

and get our list of possible contenders.

That'll give us a lot more than 500 suspects.

Yes, it will.

We'd better get cracking, then.

TV: Three teenage girls were murdered in West Glamorgan.

The bodies of Pauline Floyd and Geraldine Hughes

were found in woods near Llandarcy.

Three months earlier, teenager Sandra Newton had been murdered

15 miles away. This year, DNA tests confirmed that the girls

were killed by the same person,

but they say recent forensic intelligence

has given them cause to investigate further.

A breakthrough in DNA forensics has now formally linked

the murders of Geraldine and Pauline to the murder of Sandra Newton

in July 1973.

In other words, we are now actively trying to find

and apprehend a serial killer.

The killer is still out there enjoying their freedom,

enjoying their life...

These were the girls you knew, weren't they?

Geraldine and Pauline, yeah.

How?

Er, I was at school with them for a bit,

and then I worked at the factory with Geraldine and her mum.

You worked in a factory?

Yeah. I did!

What about the other one?

Er, no, I didn't know the Neath girl.

Erm, I didn't know Sandra.

When we moved from Coventry, it was tough.

It was like landing on the moon.

Mum just couldn't handle it,

and Dad said we had to keep smiling at all times,

be "good immigrants", you know?

Geraldine and Pauline were the first people I met in the playground.

It was Geraldine's birthday, and she'd smuggled a cake in.

She offered me a slice, and, uh...

..that meant everything.

This must be a shock. Well, if they're looking at it again,

it's got to be a good thing, right?

Yeah.

Are you sure?

At his house?

Then what happened?

Oh, my God. No way!

Really?

SHE LAUGHS

No!

SHE LAUGHS

So with these 500 men, what will you do if they refuse?

What do you mean?

Well, if they won't give their DNA?

Well, we can't force them.

Not legally.

Won't be an easy ride, mind.

I've got history with more than a few of them on the list.

Let Phil and Geraint do those house calls, please.

Paul...

..you have to go into this knowing that you might not find him...

..and having some inkling as to how you will deal with that.

Well, sometimes it's the things you don't do

that come back to haunt you.

Like I knew John Dilwyn Morgan was innocent.

But after Ray Allen tore a strip off me, I did fuck all to help him.

Nothing. Just kept my head down.

Yeah, well, sometimes that's the smartest move.

WATER DRAINS FROM SINK That's what I told myself at the time.

Hello, Mrs Morgan.

DI Paul Bethell. Is John in?

You're joking.

I chucked him out years ago.

You'll probably find him down the Labour Club.

You want my DNA?

That's right, John.

What's to stop you putting it on a dead body?

Screwed then, aren't I?

I told everyone and their mother...

..you didn't kill Sandra.

Big deal. I didn't believe it then, I don't believe it now.

I'm gonna fucking burst into tears.

Look, John...

..you give us your DNA now...

..and we can clear you once and for all. Clear me?

I was tried in the court of public opinion.

And found guilty. I'm well aware of that, John.

Yeah, well, you'll know I lost everything.

How will a DNA test change that, eh?

It's too late.

Oi!

Where do I spit?

So if you'll just let us have a DNA sample,

we can eliminate you from our enquiries.

I'll tell you what,

I'll give you a DNA sample when you give me my fucking clothes back.

Sorry?

October '73, you took my denim jacket for testing.

Hawkwind and Sabbath patches on the back.

Never bloody saw it again!

BELL RINGS

I don't see how it took DNA for them to link those murders.

It was obviously the same bloke.

Yeah, what're the chances of two killers living five miles apart?

Maria.

My schedule is creaking, might need to off-load some classes.

Yeah, OK.

Can we go over everything later? I can do five.

Sure, no problem. Thanks.

Here we are.

15 down, 485 to go.

Where's the boss?

Oh, there's one test he wanted to do himself.

Can you open your mouth, please, Dai?

Dai?

Open your mouth, please, Dai.

Thank you.

Oi!

What do you want?!

What do you want?!

This is bloody harassment!

We're taping half the cars in South Wales. Why not one more?

Cos Dai Williams is not on our list.

The end.

You need to start packaging your samples.

You're behind.

Yes, sir.

Let me tell you something, Bethell.

Every station I've ever set foot in,

there's a bloke in the corner on his own, long face, in-tray up to here.

A bloke no-one wants anything to do with

unless they dump their shit on him.

You know why?

Cos once upon a time, he thought he was different.

Golden.

Too clever not to follow orders, too good not to be in a team,

too sharp not to chase down his own leads.

He thought he was fucking special, and the rules didn't apply.

But guess what?

He wasn't and they did?

Ah, shit.

You all right?

Fancy a pint?

Fuck, aye.

Give me a solid on this, Colin?

And rush it through.

We have a system in place, Paul.

I know, I helped to design it.

We're still not prepped for the first 500.

Call it a sneak preview.

The exception that proves the rule.

Dai Williams.

Oh, I'll be in touch, Paul, fear not.

Where the fuck have you been? You said you'd be home at seven!

It's gone ten! Something came up. I cooked.

Lamb chops. I didn't ask you to. You did, actually.

I said, "What do you fancy to eat?" You said, "Lamb chops."

Well, I'm not hungry.

Listen to me, I sound like my bloody mother!

I'd kill for a beer, though. I'm 23 years old.

I don't want to play the part of the bloody nagging wife!

Then, do us both a fucking favour.

I don't deserve this.

You and me, we're a team or we're nothing.

Where've you been?

Sandra Newton's stepdad.

I've been keeping an eye on him when I can.

Like, off your own bat?

Is that a good idea?

Probably not.

But it's keeping me sane.

I suppose.

Every job has their bad days.

I'm not doing my job, Karina, that's the fucking point!

We're still on the tapings.

They're not inclined to come and speak to us.

I would ask them...

It's come to this.

Watching the bloody news to find out what's going on.

I would be, or my colleagues would be the only person

to know who they are.

So at the end of that round,

the scores are like the legs on a GM turkey.

Remember your promise.

I'm here.

I don't know what I'll do if Dai isn't a match.

Always had such a strong feeling about him.

Yeah, well, DNA trumps strong feelings.

Apparently.

There's no doubts on that score.

Phil has.

Always asking if DNA's everything it's cracked up to be.

Did I tell you he came forward as a witness?

Dai, not Phil?

You never told me anything back then.

Just walked straight into the station saying he wanted to help.

Is that so weird?

I mean, he had lost his daughter. Stepdaughter.

That's not an indicator of guilt.

I'm just saying.

When you have a feeling about someone, there's a reason.

PHONES RING, TYPEWRITERS CLACK

You all right there, sir?

Er, yeah, I just want to talk to somebody.

Please. OK.

Is that our man, according to you? Yeah.

The stepdad? Yeah.

Leave him to me.

When I came back, he was still in the lay-by.

And, like, hunkered down behind the wheel.

Like he didn't want you to see him?

Exactly.

And what colour was the car? Navy.

Maybe purple.

Or black. Oh, I see.

All the colours of the fucking rainbow.

What? No. I'm telling you the truth.

Three weeks, Dai. Three weeks it's taken you to come in

and tell us about Lay-by Man. Why? You know why.

I'm Sandra Newton's stepdad.

You've got a bloke parked outside my house every night.

We certainly do not.

That's most likely gentlemen of the press.

Do you know what my old dad used to say, God rest his soul?

Any time anyone does you a turn, always ask why -

what's in it for them? Hang on, hang on, I came in here in good faith.

Don't interrupt me, Dai.

I've got some questions about Sandra,

and it's very important you answer them truthfully.

Do you understand me?

Did Sandra look upon you as a father?

I certainly like to think so.

So you got along? The two of you?

We had our ups and downs.

Oh, well, let's focus on the downs, if we may.

Did you ever get physical? What?

You slap her? Punch her? No!

I bet she drove you up the wall, though, pretty girl like that,

under your roof, in your bathroom, passing you on the stairs...

That's disgusting! I get it. I get it.

You raise her, you clothe her, sweets, pocket money, all that.

But you expect something back, right?

You want a return on your investment.

I don't know what you're on about. You lose it.

You lose it, and then two things happen.

You get away with it, and then you get a taste for it.

Before you know it, you've got two live birds in the back of your

taxi with only one thing on your mind! Stop it!

No, YOU stop it, Dai. Right now!

And tell me what happened, save us all a lot of grief.

I'll write it down, all you got to do is sign it.

Make it easy for yourself, Dai, make it easy for Pat.

Pat doesn't know I'm here.

You see?

Yeah.

I think I do see, Dai. Yes.

There was no man in that lay-by, was there?

Guv.

What? Mr Allen wants to know what's going on.

He says, and I quote, "If this has got anything to do with

"the bloody Neath girl, there'll be hell to pay."

Right.

To be continued, Mr Williams.

Chris, take his clothes for full forensic examination.

DOOR BUZZES

Hello. Hi, Sita Anwar.

Yeah, sure, come in. Thank you.

We're upstairs. OK.

Could you take a seat in there for me. Thank you.

We've got a visitor.

Sita Anwar.

Says she was a friend of Geraldine and Pauline's.

Says she was with them on the night they were taken.

I thought it was worthy of the boss's time. Yeah.

Shit, I'm, erm, supposed to update Jackie.

Geraint?

Sita Anwar. See what she wants?

Best china, please. All right?

Right, can we get on top of the next batch of samples?

I don't want Colin sitting there twiddling his thumbs,

and Jackie's going to ask for an update, so, uh....

Sure.

Right.

See you later.

I thought I'd give you my contacts

in case I can be helpful in any shape or form.

OK. Well, that's appreciated.

Do you want a tea or a coffee, Sita?

Er, no, thank you, I've got to get back to work. Busy day.

And what do you do for work, if you don't mind me asking?

I work at Oakcross school.

I'm the head teacher. Right.

Wow.

You must be busy.

Do you want to tell me something, Sita?

Such as?

I don't know.

About that night, maybe?

Erm, I was supposed to go to the Top Rank with them.

But my dad put a stop to it.

I think it's great you're doing this.

Fresh eyes is what it needs.

What makes you say that? About fresh eyes?

Oh, nothing. Just, er...

No disrespect to you, but some of the '73 lot

were a winning mix of useless, arrogant and drunk.

Right.

No surprise they never solved it.

Tell me what you really think.

Oh, you weren't, erm...

No, too young to have worked on it, right?

Much too young. Yeah.

Is there anything else I can do for you?

No, no, thank you.

Nice to meet you, Sita.

Yeah, nice to meet you.

PHONE RINGS

Is it him?

If you mean, "Is it Dai Williams?"

I'm afraid to tell you, no.

His DNA doesn't match the control profile of our killer.

Sorry, it doesn't match? No.

Colin, are you sure?

Have you checked...? Dai Williams is not our man, Paul.

Shit.

It's not just Dai Williams -

the first batch of 50 swabs have all come back negative.

Shit. Yeah.

A fair few healthy candidates in there.

ALL our candidates were in there.

All our favourites anyway.

I suppose we have to manage our expectations and our hopes.

What do you mean?

I mean, we're in this for the long haul, aren't we?

Yeah, we are.

Can you get me in front of the Chief Officer Group?

Yeah, course.

Getting the begging bowl out already, are we?

Just on testing alone, we're gonna blow our budget

in four months, three maybe.

We need to buy some time to get through that list.

I'll call them first thing.

As per your request, we've expedited your application.

But I have to inform you, we see no grounds to increase your budget

or extend the lifespan of Operation Magnum.

With respect,

I think the grounds are self-evident.

We haven't caught this man yet because we haven't matched his DNA.

But the swabbing programme is in full swing

so now's the time to hold our nerve.

I'm sorry, Jackie.

We'd like to help, but we're stretched,

and, frankly, this was always a bit of a punt.

Sorry, but Jackie's right.

This is the time to hold our nerve.

He's out there. And we're close, and I've got a feeling,

but if an old copper talking about his gut doesn't cut it...

..let's not forget why we've reopened

this case in the first place.

Sir, we owe it to these girls to find him.

KNOCKING

He's in, you know, Mr Willoughby.

Police? How'd you guess?

Jan Stiles.

Number seven.

What makes you think he's in, Jan? Never answers the door, does he?

Postman, Jehovah's, Cancer Research...

He rarely comes out in the day.

And you won't see a light on, ever.

Not from January to December.

Does he live alone?

Got a wife and two sons, would you believe?

Home-schooled his kids.

Doesn't trust the state.

Doesn't trust anyone.

Do you know, I've lived four doors down from him for 25 years

and never had a conversation.

He's missing out.

You know I'm famous for my heavy knock, right?

Not THAT famous.

Took the door off a Securicor once.

Let's hear it, then.

HE KNOCKS

Mr Willoughby?

South Wales CID.

Fuck off!

LORRY HORN WAILS

So much for your heavy knock, we got our first refusal.

That's about the size of it.

Anything in the file about him in '73?

Not a lot, but what we got fits.

Fits how?

Fredrick Thomas Willoughby, 33 at the time of the murders.

Came into the system as the identified owner

of a white 1100, which he used to keep round the corner of the house,

even though he had parking outside.

Was the car taped? If it was, there's no record of it.

But there's an old intelligence report in the file.

Complaints from neighbours that he'd approach kids.

"That's a lovely dress you're wearing," etc...

Maybe he was just a friendly bloke?

Maybe.

But his resemblance to the witness description

was noted at the time, bushy hair, thick moustache, well-built.

He'd apparently leave his house of an evening,

but when questioned, his wife said she had no idea where he went.

Do you look in the Stop Check log?

Yeah, he crops up a few times.

Always driving his white 1100 late at night.

Stopped locally in Port Talbot, Swansea

and on two occasions the Jersey Marine to Llandarcy Road.

Christ, boys, we need to swab him before we do anything else.

How? He's told us to fuck off. Well, he's told you to fuck off.

Set up a meeting. I'll work my magic on him.

This I've got to see.

I've got some homework to finish.

OK, love. All right.

Oi, plate.

Bloody hell.

I ran into Maria in the supermarket.

Yeah? Hmm.

She mentioned you'd dropped your teaching.

Right. What else DID she say?

Nothing.

But I got the sense that she was worried about you.

Well, one, she needn't be, and two,

she had no business conveying that to you.

Whoa, now, that was only my impression.

OK. You done? Er, yeah...

Sita...

What is it?

Nothing. Just, er, usual.

Too much work, not enough hours in the day.

Can I? Sure?

Yeah, sure.

I don't want Maria to get it in the neck now, OK,

cos she didn't really say anything. Oh, no, no. Don't be silly.

I overreacted. It's fine.

OK?

Yeah, OK.

Well, the good news is, he will meet you.

And the bad? He has conditions.

Bizarre, man.

It's full view of as many people as possible. Clever.

Hello, Mr Willoughby.

I'm Detective Inspector Paul Bethell.

I believe we've followed your instructions to the letter,

please say if we haven't.

To cut a long story short,

we're trying to solve the murders of three young girls in 1973.

Through DNA testing,

we're hoping to bring the man responsible to justice.

But above all, we're hoping to bring a degree of peace and closure

for the parents and families the girls left behind.

Well, Mr Willoughby, I hope I've put your mind at rest.

Can I arrange for my officers to return at a convenient time

to collect a mouth swab from you?

No chance.

Boss wants to see you.

Come in.

Sit down.

Detective Inspector Warren informed me of your sensitivity at the scene.

He did?

Some imbecilic constable allowed Mr Hughes into the wood.

Yes, sir.

And then you drove him home.

Poor man.

It's the least I could do, sir. Well, in that light,

I think you're the man to go and update Mr Hughes and his wife.

Important that they feel...kept abreast.

What am I telling them exactly?

Keep it vague.

Talk about our general progress,

the dedication of the team,

the thorough nature of the investigation.

Right, sir.

And if they ask for, er...

..examples of this progress?

Tell them - to divulge more would be to jeopardise our inquiry.

What I'd like to emphasise is the thorough nature of our investigation

and the dedication of our team.

Well, we appreciate you taking the time to come and tell us, I'm sure.

I'm not sure Detective Constable Bethell's told us anything.

Jean... Are you any nearer catching him?

We have several active leads, Mrs Hughes.

To say more would jeopardise the inquiry.

We understand.

Thank you.

I'll leave you in peace.

Thanks for the tea.

And er, tell Mr Allen he needn't worry.

We're not gonna run our mouths in public,

vent our frustration to the papers.

I mean, that's why you're here, isn't it?

We just wanted to keep you abreast with our progress.

Right, well, next time you come, let's hope you've made some.

Not that it'll make a blind bit of difference.

So, how do we get his DNA?

What, surreptitiously, you mean?

Sorry, but I'm afraid the whole idea is fraught with problems.

I'm all ears.

Well, if you followed Willoughby into a pub

and nabbed his glass, say, there'll be scores of DNA traces

all over the vessel and no way to tell which is his.

And let's say he hadn't wiped the sweat stains off your car,

and I'd been able to get DNA,

I would have taken it without consent.

So? So it'll very much prove inadmissible, Paul.

DNA's our new shiny toy.

We must protect it scientifically and reputationally.

With respect, that doesn't fly.

You started all this. You came to us.

Now it's getting a bit choppy out there, you want to...

Play it by the book? You bet I do, yeah. I have to.

All I'm asking is you test his DNA.

And when I take that DNA into a lab, any lab,

they're gonna want to see a warrant. Come on, don't give me that.

Or some other supportive legal documentation

that I will not be able to furnish them with.

Where there's a will, there's a way.

I know Willoughby did it, I just need to prove it.

Yeah, you knew it was Dai Williams, too, didn't you?

All right, you stubborn bastard.

Find me a way that won't sully DNA's good name or yours.

All right, such as?

I've no idea, Colin, I got a D in O-level Biology.

I bet you bloody didn't.

Night, Paul.

PHONE RINGS

Geraint?

You've been summoned, boss.

High-ups need a progress report.

Right, it's been three months.

Where are we? Briefly.

Yeah. Well, sir, we've no positive results from the swabs

but we have a strong suspect.

A man who was living in the area in '73 and resembles our e-fit

and is refusing to provide us with a DNA sample.

How many men have you swabbed to date?

Sorry, sir, did you hear what I just said?

And did you hear what I said?

265, sir.

Yeah.

I'm afraid we'll have to start thinking about

a cut-off point as a date.

I think mid-January would be sensible.

Sir, I've got a suspect who's refusing to give us his DNA.

"Sensible"? And I've got to consider the drain on day-to-day resources

in the light of historically harsh budget cuts.

We completely understand, sir.

And we'll do everything we can to bring a charge by mid-January,

if not before.

TV: Good evening. The relatives of four young men

are in mourning tonight after an horrific accident.

The four were in a car which plunged into the River Usk near Newport.

A fifth man managed to escape and swim to the river bank.

He's been released from hospital after being treated

for shock and hypothermia...

HGV can reveal tonight that one of the four had previously...

It's all right, Dad, I've got it. I've got it.

You've got physio on Friday as normal,

but it's not with Gemma because she's on holiday, OK?

Now, sit down.

OK?

OK.

We need to talk about the house, Dad.

Do you remember I said...

..we need to start clearing it out soon?

I was thinking of making a start next week.

OK?

Yeah... Yeah?

We have to work out what we're gonna keep

and what we're gonna throw away.

Don't worry, I'll sort it all out.

Sita?

Why did you think you always knew best, Dad?

Always!

You never asked me what I wanted.

You just tried to control me the way you controlled Mum.

Why did you have to come that night?

Why?!

Why did you make me leave them?!

Oh, God, sorry.

Oh, I'm sorry, Dad.

I'm sorry. I'm sorry.

I'm sorry, Dad.

I'm sorry, Dad.

It's all right bach, it's OK.

Why don't we have some water, some paracetamol?

I had a B in O-level biology, actually.

Oh.

Commiserations.

I've been speaking to a colleague.

I really think we need to roll the dice on this, Paul,

think laterally.

I told YOU that.

50% of the killer's DNA would have been passed on

to any children he may have had.

Moreover, he has a distinctive genetic marker,

which also would have been passed on to any offspring.

A marker? Mm-hm, a double allele.

Is that rare? Rare-ish.

I could search for individuals with the same feature.

That's a big pool? Vast.

So initially I would focus on Port Talbot and Neath.

All right, go on, I'm interested.

Well, you should be interested.

If we're successful, we'd be making history.

Familial DNA has never been used to identify a suspect.

Right. We'll be going where no man has ever gone before.

Not to strike a too mundane note, what about my suspect, Willoughby?

Well, if his male relatives are on the database, then, yes,

we may well get him.

And if I put in the double allele into the database

with geographic parameters...

Yeah, but those parameters, I mean, they're guesses.

Oh, that's harsh. This is based on a statistic that 80% of killers

live within a four-mile radius of the murder scenes.

Still guesses.

I did say that we'd be rolling the dice on this one, Paul.

Go on.

My search could yield a shortlist of around about 50, say.

What do you think? Achievable?

Very fucking achievable.