ALAN CUMMING: This is "Masterpiece Mystery!"

CASSIE: David Walker died of a single stab wound to the chest We're looking for his killer.

CUMMING: Previously on "Unforgotten"... We didn't row about it, the row didn't get out of hand, and I didn't accidentally kill him.

MARION: Listen I've gotta go, but I'll see you on the ward.

MARION (on phone): Bye love.

TONY (voiceover): Who was that?

Zoe, the girl with Non-Hodgkins.

She got your personal number?

SUNNY: Do you think there's a chance that he was your client when you worked as a prostitute?

If we tell Janet, we could lose Flo.

LINGLEY: He said he'd been abused by a teacher.

CUMMING: "Unforgotten," tonight, on "Masterpiece Mystery!"

♪ ♪ (thunder claps) (whimpers) (click) ♪ ♪ ♪ All we do is hide away ♪ ♪ All we do is, all we do is hide away ♪ ♪ All we do is lie in wait ♪ ♪ All we do is, all we do is lie in wait ♪ ♪ I've been upside down ♪ ♪ I don't wanna be the right way round ♪ ♪ Can't find paradise on the ground ♪ ♪ ♪ (street chatter, sirens) COLLIER: So if David was at primary school in the mid-'50s, we'd be looking at a possible abuser who's, what, in their...early 80s now?

Which obviously rules out any of the people we're currently talking to.

SUNNY: Unless the murder was committed on behalf of the abuser.

What, the primary school teacher ordered a hit?

Walker allegedly confronted him 25 years later.

The teacher could have been anything by then.

With everything to lose if David had gone to the police.

Okay, well, look, let's keep an open mind about that.

Okay, so Colin Osborne, now, he worked at Klein Egerton in the late '80s, but then leaves very suddenly, it's only about a month or so before David died.

Now, it's probably a complete coincidence but can you speak to them please?

Yeah.

And then Sara Alazi.

So, she says that she was living in Rome between March and December 1990.

Can you speak to the Border Agency, see if-- how-- we can confirm that?

Yeah.

Well, I think... yeah, that's it.

Thanks, everyone.

Go home now and sleep.

♪ ♪ (seagulls squawking) Okay, listen, tell you what.

You put your pajamas on, brush your teeth, I'll be back upstairs in two minutes.

You show me what a big, grown-up girl you are.

Okay?

Good girl.

(sighs) One other option.

You let him go to the police.

And then you just deny it.

You're a lawyer.

He's a drug addict who's just had his stepdaughter taken away from him.

Why on earth would the police believe a word he says?

And what if there were CCTV in the supermarket car park?

Or another witness?

We could easily check the CC... No.

Sorry.

But...

This is the simplest way.

I love you.

And have you told me everything, Col?

What do you mean?

That thing you do, that you've always done.

That part of you you keep from me.

I've told you everything.

Promise.

Coming, ready or not!

♪ ♪ (inaudible narration on TV) Tess, I think we should postpone the holiday.

Why?

I just think we're none of us in the right frame of mind.

You won't be able to relax.

Why would I not be able to relax?

Well, because of what's happening at your work... Work's fine; why would I not be able to relax?

Do you know what he said to her, before we arrived?

About wanting to hurt someone?

Listen, Jason is angry and confused... And I get that, of course I do, and you also have to get how that might spook a 15-year-old.

Well, yeah, maybe, until her dad very quickly reassured her that Jason is simply trying to process an incredibly traumatic event, and that, actually, he is the gentlest, kindest man in the world.

Which you obviously did, yeah?

Sure.

Yeah, good.

And are you okay?

I'm as fine as a woman who's just learned her late husband was murdered is ever gonna be.

Paul, you don't seem to be really understanding that.

Well...

I have to admit you are beginning to ever-so-slightly scare me.

Scare you?

And I'm wondering if there's anything you need to tell me.

No.

There's nothing I need to tell you.

♪ ♪ (man leading prayer) (inaudible praying) Sara, how nice to see you... Is everything okay?

Sara?

(phone ringing distantly) Jason?

Hi.

Hi.

I'm DCI Cassie Stuart.

I'm leading the investigation into your father's death.

Can I just say how sorry I am for your loss?

Um, thank you.

Would-would you like to go and find somewhere a bit more private?

No, I just...

I...

I just wanted to know when I could visit him.

Right.

Are you really sure that's a good idea?

He's my dad.

No, I understand...

Better surely to remember him how he was.

Except I don't, hardly.

Remember him how he was.

I mean my mum made me a memory box after he went.

Lots of stuff of his in it.

And there's a jumper in it that I used to smell, to remind me of him.

Except it's gone now.

The smell.

Used it all up I guess.

(stammering): And I actually need to see him.

I just wanna be with him.

I want to say goodbye.

Will you leave this with me?

Have you got a number I can call you back on?

Yeah, um, use the mobile.

Right, I'll come back to you as soon as I can.

Thank you, DCI Stuart.

Cassie, please.

And, really, there's no need for thanks.

I'll see you.

Um... ♪ ♪ SUNNY: What year would that have been, Mr. Gregory?

From when he was about seven, till when the teacher left, about a year later.

So that would be what, 1958, '59?

Roughly.

Did Mr. Walker give you the teacher's name?

No.

Or if he did tell me, I don't remember it.

Sorry to ask this, but... Did he ever give you any specific details about the abuse?

It was bad.

Proper... rape and stuff.

Did he ever report it, I mean, is there be any record of it?

As far as I know, he told no one.

I mean, kids just didn't then, did they?

Just kept it all in.

Now, you said to a colleague of mine that you often thought it was why he lived his life the way he did.

What did you mean by that?

The women, the drink and drugs.

To blot it all out, all that... shame and guilt.

So he had drug issues?

Yeah, you could say that.

And did he have relationships outside his marriage?

Yes, he... he did have affairs, but mainly I was talking about prostitutes.

Right.

In fact, that's kind of why we stopped seeing each other.

I wasn't remotely interested in that sort of thing and we just kind of drifted apart.

And this was when?

Mid-'80s, I guess?

But then in about '87, he rang me, out of the blue, and we hooked up again.

We went out for a beer a few times.

Which was when he told me about Firdown, the school where it all happened.

Do you happen to know if he ever told his wife about the things that happened to him there?

He told me he'd never been able to.

For whatever reason, the only people he ever spoke to about it were me and, when he tracked him down, the teacher himself.

So you know for a fact that he actually spoke to him?

He found out where he lived, went to his house.

And what did the teacher say?

Denied it all, of course.

Then got abusive, then threatened him.

♪ ♪ (indistinct chatter) (phone ringing) (door beeping) (door beeping) (distant whispering) ♪ ♪ My P.A.

was meant to have called you.

I'm so sorry, total mess up.

But my hands are tied, Tess.

If you have access to any intelligence relating to the investigation, and it turned out that you were... ...in some way...

So you can take a back office role.

HR or training.

Or take some time off, take some leave.

I'll stay.

♪ ♪ CASSIE: This was him about a year before he died.

No, I don't recognize him, I'm afraid.

Sorry.

So can you think of any reason, um, why this address might've been written on a travel card found in his office desk?

Absolutely no idea.

When did you say he died?

We think some time about early May 1990.

Well, maybe the person that wrote this, just wrote down the wrong address.

Well, that's certainly a very real possibility.

So, can I just check if anyone else was living here in 1990?

Oh, it would've been just me and my husband.

He's passed away now.

Hang on-- when was that time Daddy and I were in America, and Marion broke in?

♪ ♪ Mum was winding me up, and I knew it would annoy the ass off her to tell her that you meant more to me than her.

So I did.

Which is very sweet of you, Zoe, and you mean an awful lot to me too, but all I'm saying, all anyone is saying, is we just need to keep that relationship professional, and within the boundaries of the hospital.

Soz.

(siren blaring in distance) (phone ringing) I owe you an apology.

TONY (on phone): What for?

It was Zoe who told her parents about the phone conversation.

Oh, right, not a problem.

Uh, listen, that's not why I'm calling.

A police officer's just been round here.

Sorry?

TONY (on phone): Yeah, she'd already been round to your mum's, and then Elise gave her our address.

What did she want?

She said she was investigating an historic crime and that she wanted to ask you a couple of questions.

TONY (on phone): She didn't tell me anything more than that, so I rang Elise.

She said she'd been trying to get hold of you, but your mobile went straight to voicemail...

I was on the ward.

TONY (on phone): But Elise said she'd told her that it was about a murder, dating back to 1990.

They've only just found the body apparently.

♪ ♪ CASSIE (voiceover): So her married name is Kelsey, but she was single in 1990, so, can you run a check under her maiden name, which is that Marion Dunphy?

Right, okay.

And how did it go with James Gregory?

Interesting.

According to him, David definitely did use prostitutes, and on a fairly industrial level.

Jesus.

Do you know, I just... met his son this morning?

What a nightmare this is going to be for him.

It's going to get worse.

Walker was into some really weird stuff.

Like?

Violent kind of weird.

Tying up, S and M stuff.

And did Gregory think his wife knew about it?

No, he thinks not.

So the other possibility is that he went too far with Sara Mahmoud, and she attacked him back, and then he died as she tried to defend herself somehow?

Okay, okay can we just be very careful how we share this information for now.

Yeah, of course.

And obviously we'll need to speak to Sara Mahmoud again and Tessa Nixon.

Yeah, I'll set up both.

Oh, and what about Firdown, David's school?

I spoke to the current head.

And?

She-she was suitably appalled, I mean without a name, she wasn't sure how she could help us.

This is abuse that is alleged to have occurred about ten years before pretty much the oldest current teacher, was even born.

Right.

I mean even identifying a possible suspect is going to be as good as impossible.

On top of that, there's a really good chance that whoever David Walker was talking about is already dead.

Right, okay.

I'll see you later.

♪ ♪ (phone ringing) Colin Osborne and I both started on the same day, and we were kids really.

I'd come straight from Cambridge, Colin from Kingston.

They recruited from a Poly?

Oh, they took Colin.

Because?

He got the highest marks in the aptitude test anyone had ever scored.

And then he went on to do well here?

If he'd stayed, he'd have ended up running the place.

Did you get any sense of why he did leave so suddenly?

No, I mean, I worked with him and I liked him, but I didn't really know him well.

He was quite a reserved man.

One day he was here, the next he was just gone?

Have you spoken to Colin about this?

Mr. Osborne's helping us with our enquiries.

I'd need to take advice before answering any more questions.

I'm not sure of our position discussing Colin's departure.

What's the best number for me to contact you on?

Why don't I call you when you've spoken to who you need to-- what's the best number to get you on?

♪ ♪ SUNNY (phone message): So if you could call us back when you pick this up, please Ms. Mahmoud, it'd be good to talk further.

(labored breathing) (inhales) ♪ ♪ (indistinct, muffled speaking) (distant): Colin?

Sorry, drifted off for a minute.

Um, what were you saying?

Um, Janet was just asking if there any issues, any-any difficulties, anything at all that we feel it would be useful for her to know about.

No, no difficulties at all.

Hmm.

And how we doing at bedtimes?

Us or Flo?

(laughing): Both!

Yeah, no, good as gold really.

She sleeps really well, and is full of beans in the morning.

JANET (distant): And how are her nightmares?

(distant): Hasn't had any.

I think everything really changed when we got her here full time... (Simon's voice fades out) ♪ ♪ ♪ ♪ ♪ ♪ Hi there, Marion Kelsey?

Hello.

DCI Cassie Stuart.

Have you got five minutes for a quick chat?

Oh, yes.

Yeah, sure.

No, sorry.

Who is he?

His name was David Walker.

He ran a small chain of clubs in the '80s.

Never been a clubber myself.

No, me neither.

Music's always too loud for me.

Mmm.

Well, obviously, as you know, we've spoken to your mum and sister.

And she seemed to think that you might have been living in her house at some point in early 1990?

Did she say I broke in?

Well, she did, yes, actually.

My father was on a lecture tour of America for three months and I was temporarily homeless, so, I had a key, let myself in, stayed there for a few days.

If that's breaking in... Sure.

Well, as you say, it-it couldn't have been her that gave that address out, because she was abroad, so could it have been you?

Sure.

Oh, okay, um... but you don't have any recollection of doing so?

From some time in 1990?

No, sorry.

Okay, no problem.

So your mum said you left home in about 1985?

Yup.

And you stayed in London?

Yeah.

Whereabouts?

Various places.

And was 32 Smoke Lane one of them?

I was there for a while, yeah.

This was the address, in fact, that you gave after you were arrested in 1988 for assaulting a police officer...

I never assaulted anyone.

...at a demonstration in North London.

A policeman attacked me, I was defending myself.

For which you were found guilty at Horseferry Road Magistrate's court and fined 100 pounds.

You look like a smart woman to me.

I'm sure you couldn't be so spectacularly dim as to suggest that a police officer from the '80s-- well from any point in the last 50 years actually, couldn't have lied?

I'm not sure why you're being so defensive, Marion.

I'm being defensive because I was on a perfectly legal march, exercising my right to protest, and I was assaulted by a police officer.

And you're now trying to imply that I have some kind of violent past, and that therefore I must be connected in some way to this unfortunate man's tragic death.

And I find that annoying, I'm sorry.

Are we done, because I have a very busy ward.

Sure.

Great, nice to meet you.

And you, and if we need to speak to you again..... (door opens, closes) ...we'll be in touch.

LINGLEY: So there are no records that can confirm whether Sara Mahmoud-Alazi was or wasn't in the U.K. We're checking with all the main airlines for flights to Rome in March 1990, but I've been told not to hold my breath.

Okay, keep pushing them.

we do need to be able to confirm where she was at the time of David Walker's death.

Absolutely.

I've left her a message to call us back.

Okay.

Jake, where are we with the photos?

I went through to Tessa Nixon's.

Unfortunately she said she chucked out most of the ones of her husband about 15 years ago.

Why?

Trying to lay ghosts to rest, she said.

Or bury them.

JAKE: And I'm still waiting to hear back from the Tory offices about their photo archive.

Okay-- Murray?

I spoke to a senior guy at Klein Egerton today and there's definitely something odd about Colin Osborne's departure, I don't know what it is yet, but my guess is that they're going to close ranks.

I'm on it.

Right, good stuff.

Okay, following my rather prickly chat with Marion Kelsey earlier, we ran a tenancy check on the, uh, Smoke Lane address and we found, yes, one rather interesting result.

So this is Sinead Mary Quinn.

She lived at Smoke Lane from 1988 to 1991.

And then in 1992, Ms. Quinn was in prison for ten years, for her role in suspected IRA activities.

(all murmuring) SUNNY: So we then went back to Marion Kelsey's arrest sheet, and discovered that the march she was on, was actually a protest march campaigning for the release of the Guilford Four.

So we have one IRA activist, we have the murder of a Tory Party fundraiser.

And linking them both... ...we have Marion Kelsey.

(answering machine beeps) MARION (phone message): What did you tell them?

What did you tell them?!

(machine beeps) ♪ ♪ Right, so since when did Monster Truck Mayhem become part of the math syllabus?

It's problem solving, isn't it?

Oh.

Confiscated, mate.

Dad!

He's addicted to this, we're gonna have to send him to the priory.

Omar rang this morning, said thank you for not sticking the petition back up.....

I apologized on your behalf, and told him that it must have been an oversight and that it would straight back up first thing tomorrow.

(sighs) (quietly chopping) Love?

Yeah, sorry.

Back to normal tomorrow.

It was a joke.

Sorry, I'm tired.

Do you want help with the interview later?

Yeah, thanks.

Are you all right?

Yeah, fine.

(exhales) Hass?

Yeah?

I do love you.

Luckily I do love you too.

Lots.

Hey.

What you doing here?

Nice to see you, too.

It's our local.

"Our local"?

The other kids on the ward.

Just trying to work out how many things are wrong with that sentence.

They don't serve anyone under 16, they make us sit out the back so no one can see us.

We tell them, what's the worst that can happen?

We've all got cancer.

(scoffs) Have you forgotten what we discussed this afternoon?

This is hospital grounds.

Near as, anyway.

Malibu and orange, please.

(chuckles sardonically) ELISE (voiceover): She sounded out of control, Tony.

ELISE (on phone): I mean Mum was completely petrified, as was I. I'm so sorry.

ELISE: We never thought about why she came back when she did, we were just so grateful that she did.

But, I mean you know, you don't think that she could... No, no, I don't.

She-she could never have... No.

Look, I'll, um...

I'll call you as soon as she gets in, okay?

Okay.

Bye.

Bye.

(phone ringing) MARION (voicemail): Hi, this is Marion, I can't take your call right now, please leave a message.

ZOE (voiceover): Why aren't you at home, talking to your husband about it?

Talking to my husband about what?

Whatever it is that's making you unhappy.

Who says I'm unhappy?

You're a 48-year-old woman necking vodkas on your own 90 minutes after your shift has ended.

Do you think you know me, Zoe?

No.

Do you really think you have the first idea of who I really am?

No.

But I know fear.

Trust me, I can spot fear a mile away.

Hey... Hey, it's going to be okay... You have no idea... Marion, please...

Please don't cry.

I gotta go.

You can talk to me.

Really?

Can I?

Please, I want to help you.

You're not my friend, Zoe, you're not my daughter, you're just another patient, who I'll forget about as soon as you've gone.

Grow up.

♪ ♪ Hiya.

Oh, you scared me.

Ditto-- I've been calling you.

Yeah, sorry, my phone was out of juice.

How'd it go with the policewoman?

Oh, yeah.

No, it was fine.

I didn't know the guy, so... Short and sweet.

Right.

Where... where you been?

Your shift finishes at 6:00, doesn't it?

I went out with the girls.

Had a few bevvies.

Right, gonna have a bath.

Maz?

I-I've never pressed you, have I?

To talk about the past.

All those years you never saw your family.

I...

I've always just accepted that... it was a part of you, that you didn't wanna revisit.

But your sister rang, and she said you were so unpleasant today, to her and to your mum.

And I need to ask you... is there anything you want to talk about?

You make the past sound so much more interesting than it really is, Tony.

Yeah, right, my parents liked my sister more than me.

They got her in a way they didn't get me, and that makes me angry, and so we row.

And that's it I'm afraid.

It's all rather boring.

Please don't walk away... No, I'm tired and I want a bath.

No, Maz-- every time, all our life.

whenever the conversation gets difficult, you just walk away... Don't be tedious, love.

Or get nasty, or both.

You know, one day you're going to come back... (quietly): ...and find me gone.

(door closes) ♪ ♪ (footsteps approaching) Hiya.

Hi, love.

Sorry, I thought you'd gone to bed already.

Good day?

Yup.

You?

Yeah, yeah-- you're late tonight?

You said when I was 70 I could stay out until 11:00.

(chuckles) Sorry.

What were you doing in Winchester, Dad?

I...

I accidentally opened one of your bank statements, I saw a debit card payment to South West Trains.

For a copper, you're a (no audio) liar.

Yeah, I got it from you.

All right, I'll tell you but I'd prefer not to talk about it afterwards, because I know what you're going to say.

Deal.

I was looking for the bloke.

What bloke?

The one your mum was seeing.

Are you serious?

Yeah.

Okay.

Why?

You see that's... that's why I didn't want to tell you.

Because I knew you wouldn't understand.

I'm just asking why.

I'm not...

I'm not saying I don't understand.

Well, yes, the fact that you need to ask why, you are saying exactly that.

(stammering): Oh... so did you find him?

Oh, I'm gonna go to bed.

Night, love.

Dad?

Dad d-don't be like that.

Dad!

Dad!

(seagulls calling) ♪ ♪ This is it.

There's no more coming.

We don't want any more.

Thank you.

I will be a good father, Tyler, and I am a good man...

But if you ever do anything to jeopardize our adoption of Flo, if you ever threaten my family's future happiness again, I will hurt you...

I will hurt you very badly.

♪ ♪ (door bells chime) (door bells chime) What is going on, Colin?

SIMON: Why didn't you tell me before?

That I was also being interviewed in connection with a murder?

I was terrified, Simon.

And if Tyler had gone to the police and told them about me keying the car-- and then some sharp-eyed copper had cross-referenced the two cases.... Janet and her department would be about to finalize an adoption by a man being interviewed in connection with two violent crimes.

And we would have lost her, Simon.

But I swear I know nothing about this body.

On Flo's life, I have never heard of David Walker, and I have absolutely no idea how he died.

Boss?

Mm, yeah.

I've, uh, just got these from the Fulham party headquarters.

They, um, had these in old scrapbooks, from the publicity of various magazines and newspapers, the society sections.

This one is from "Hello!"

magazine the diary section.

Look at the caption below.

"Nightlife Supremo David Walker... "...and party donor Colin Osborne "at the CP Valentine's Day Ball."

The plot thickens, boss.

The plot bloody well thickens.

(sighs) HASSAN (voiceover): So tell us, Ms. Mahmoud, the recent Ofsted report identified Highbrook as having a serious truancy problem, particularly for the boys in the 13 to 15 age range.

What measures would you put in place to help motivate these boys to attend... Sara, what's the matter?

You've been acting really weird the last couple of days.

What is it?

Talk to me.

Not here.

(keys jingling) ♪ ♪ I honestly have no recollection of ever having met this man.

Okay, uh, no problem.

Can we go back, then, to when you left Klein Egerton?

When we spoke to you before, you implied that you'd just had a change of heart.

I had.

We then spoke to a Hugh Moray, who was a colleague of yours at the bank.

We sensed from him that, actually, there was more to your departure than that.

You "sensed"?

He seemed reluctant to talk about it.

Well, Hugh was always a decent guy.

Because he covered your back?

Because he respected my privacy.

So when did you start training to become a lawyer?

Later that year.

That's October 1990, that's according to your... (papers rustling) ...company website.

That sounds about right.

So what did you do in the seven months off?

Where were you living?

What does it matter?

Okay.

It matters, Colin, because I want to know where you were and what you were doing when David Walker was murdered.

You won't know this, but, uh, my partner and I, my husband, are in the final stages of adopting a child.

And... whilst I've-I've never been dishonest with the adoption authorities, there is one fact that I haven't told them about.

And I truly believe that has no bearing whatsoever on my capabilities as a potential father.

I left Klein Egerton because I had a breakdown.

And... From early May until September 1990, I was sectioned in the Maudsley Hospital in South London.

Well, I'm sorry to hear that.

And there would be medical records to confirm this, would there?

Yes.

And you were sectioned because you were considered to be a danger to yourself or... D-danger to myself, yes.

No one else.

And this-this breakdown was caused by what?

I had a history of anxiety and stress, and, um, it just came to a head.

Can you remember exactly when this was, when you went in?

Well, the date you're sectioned is not a date you easily forget.

Sixth of May 1990.

(waves lapping) A pretty solid alibi...

Fancy a quick coffee, pick the bones out of that?

Ah, yeah, um, actually I've got a date down here, uh, so you head back, I'll get the train, and maybe we can discuss later?

Mmm.

Yeah, no, right, we'll... fine.

I'm sorry, I didn't know if she'd respond... No, no, I have got to meet Walker's son anyway, so... Yeah, we'll talk later...

I can give you a call about 9:00?

Yeah, only if that suits you.

Yeah, no, I'm sure it does.

Good luck.

Thanks.

(seagulls calling) PAUL (voiceover): Everything's absolutely fine, I promise.

But do the police think she did anything?

Absolutely not.

They just have to ask difficult questions of anyone who ever knew him, it's just procedure.

You want a snack?

No, thanks.

Okay, well, crack on with your revision.

♪ ♪ SARA: The police came to see me at the school the other day.

They're investigating the murder of a man in 1990 who they believed I had a connection with.

And I know nothing about how he died, but I probably did know him.

And I knew him... Because... many years before I met you... (voice breaking): and at a very low point in my life...

I'd had sex with him.

For money.

♪ ♪ ♪ ♪ (opens door) You all right?

Yeah.

You want me to come in?

No.

Thank you.

Take as long as you need.

♪ ♪ ♪ ♪ ♪ ♪ (birds chirping) ♪ ♪ ♪ ♪ (waves crashing) ♪ ♪ Hey.

Hey.

Thought you'd be asleep.

No, Flo had a nightmare.

Oh, no, is she all right now?

Fine, yeah.

I think she's just feeling a bit unsettled.

Yeah, sorry about that, the brief came in just as I was leaving and...

Your clerk said that you weren't in the office.

Well, I went to The Oaks to have some supper while I worked.

What was it like, Col?

The city in the '80s.

Was it really as brutal as everyone says?

Why don't you just ask me outright, Simon?

Did it screw me up so much I could've killed someone?

Did it?

No, it didn't.

I know I've messed up here, hugely, but please...

Please.

Can I never have to answer that question again?

♪ ♪ ♪ ♪ ♪ ♪ Hello.

Hi.

(keys rattle) I went for a drive.

To... think how I could explain to you what happened to me.

What happened to you?

So someone did this to you, did they?

You had nothing to do with this decision?

Of course I had something to do with it.

What I wanted to explain was, at that point in my life, I believed, wrongly, obviously, that I had no other choices.

(voice rising): Since when does becoming... (muffled, yelling): a prostitute end up a woman's only choice in life?

What has to have gone wrong, for that to be the best option available to you?

I mean, you weren't a kid, Sara!

This was 1989, so you were 21!

And I...

I know you lost your parents, and I know school hadn't worked out for you, and I know life had been tough.

But this?

So please.

Please explain to me, what happened in your life that made having sex with men for money your only option?

♪ ♪ (voice breaking): I don't know.

♪ ♪ (exhales) I just...

I'd lost my way.

And this man, the one that died.

I was abroad when he died, Hass, it wasn't me.

Where?

It was when I was in Italy.

You've heard me talk about Italy a million times, it was then.

And you can prove that, can you, with specific dates?

To you, or the police?

To the police.

I don't know, I think so.

I think I have photos, but I'd need to check.

But if I can't, Hass, I swear on our children's lives, whatever happened to him, it wasn't me.

I'm going to sleep in the spare room tonight.

Please, Hassan.

We never speak to anyone else about this, Sara!

It never leaves our house.

Please, ever.

You've... You've broken my heart, my love.

(exhales) You've broken my heart.

(door closes) (sobs) ♪ ♪ (sighs) (light switch clicks) ♪ ♪ Hope you feel better.

Thanks, sweetheart.

ALI: Bye, Mum.

Bye.

Youssef?

I'm late!

(sighs) ♪ ♪ Marion?

Hmm?

Zoe was supposed to be here for an 11:30 chemo.

Oh, do you want me to call her parents?

No, it's fine, I'll do it.

(people talking in background) ♪ ♪ MORAY: Mr. Osborne left us in late March 1990, following an incident here on the evening of March the 16th, 1990.

An allegation was made by a temp by the name of Maria Gonzalez that at some point during a bonus celebration party, a serious sexual assault was perpetrated by Mr. Osborne on Ms. Gonzalez in an office lavatory cubicle.

What sexual assault?

Uh, she said he raped her.

♪ ♪ Sorry, we've done a full sweep of Mr. Osborne's criminal history, and there's no record of any rape allegation.

Well, no, there wouldn't be.

It was handled internally.

For various reasons, it was never reported to the police.

♪ ♪ (students chatting) I'm sorry.

Are you dumb, bruv?

(shouting) Hey, Sef.

Come on, what's up?

♪ ♪ (doors lock) SUNNY (in other room): So you're not under arrest, free to end this interview whenever you like.

So can I ask you, Sara, what services you offered?

Just normal.

Just straight sex.

Yeah.

Which is what your friend Samira Khan said.

However, we do now know that... David Walker's sexual tastes were not that normal.

That he both liked to hurt, and be hurt by, women.

University College Hospital, less than a couple of hundred yards from your old Kings Cross flat.

Do you remember attending U.C.H.

A&E on the 16th of February 1990?

The evening of the same day, in fact, that you sent your address to David Walker's pager.

No.

Well, the hospital records show that you presented with a suspected dislocated jaw.

You don't recall sustaining this rather serious injury?

(clears throat) Not really.

It was an occupational hazard.

SUNNY: Well, indeed.

And we were wondering whether it was David Walker that inflicted this injury.

I don't remember him.

And the next time he turned up, he got even more violent with you... No.

And in self-defense... No, I don't remember this man, and...

When he was murdered, I was living in Italy.

CASSIE: So you say you left the U.K. in March, Sara, and you went to Europe for nine months?

I don't "say it," I did.

Where did you stay?

Hostels, pensions...

I moved around.

Was that on your own?

Yeah.

Did you work?

Yeah, in bars and clubs.

So you have no pay slips or...

It was cash in hand.

And did you make any friends who could vouch for you?

I made friends, yeah.

The sort you do on holiday, but none I could remember 30 years later.

Hm.

We just need some proof, Sara, that you...

I've already said.

Check... passport records or however you do it.

We're in the process of doing that, but it's not that easy.

So anything else you can give us would be enormously helpful.

Okay, thank you for your time.

SUNNY: Thanks.

Sorry, one thing.

Just upping sticks like that, and heading off abroad for nine months, that's quite a big deal isn't it?

Anything in particular prompt that move?

It wasn't any one thing, if that's what you're implying.

It was my life.

I knew if I'd stayed any longer, I would have died.

And I wanted to live.

We'll be in touch.

♪ ♪ (door closes) ♪ ♪ Both parents thought she was here, so when I called them, they looked in her room, and they found her diary.

Were you drinking with her two nights ago, Marion?

Absolutely not.

I mean, I, I was in the pub, but I went there on my own.

But you told her to leave, that she was underage, and it was completely inappropriate?

Yes, I did.

Well, then can you explain why it says in her diary that you bought her a Malibu and orange?

(signal ringing in background) I bought her one drink, and then...

I let her sit with me for two minutes and then I left.

(sighs) Okay, well, I need to speak to my line manager, and actually, I think you need to go home.

What?

How can you not get that this has completely overstepped the boundaries?

Nicola, please... She's a 17-year-old kid with a very weakened immune system.

And you're meant to be caring for her, not getting her drunk.

Nicola... Look, your judgment's gone.

I'm so sorry.

I...

I... (sighs) I'm not in a very good place at home at the moment.

There's a few things in my, in my personal life that are going wrong.

Can you please just let me speak to the parents?

Nope, you're going absolutely nowhere near the parents.

They're on their way over here now and I can tell you they're not happy.

Go home, Marion.

Just did she, did she say anything in her diary about where she was going?

No, and she's not answering her phone.

No one has any idea where she is.

♪ ♪ And it was a woman who made the allegation?

MURRAY (on phone): Yes, why?

Because Colin Osborne's gay.

(slowly): Right.

Well, I'm gonna try and track her down, and I've got the name of the lawyer from Klein Egerton who handled it at the time, and I think he's still alive.

We'll speak to you later.

MURRAY (on phone): Okay, guv.

So maybe it was this that actually prompted his breakdown.

The timing seems a bit coincidental, doesn't it?

Although how it connects to David Walker...

If it even does.

If it even does.

Yeah.

♪ ♪ YOUSSEF: You took your time, fam.

♪ ♪ Whatever it is, bruv, can't be that bad.

Mate, I'm telling you.

Except you ain't.

You got to swear, Mus, you never tell anyone.

Not Ollie, not Piot, no one.

I promise, man, it's cool.

♪ ♪ ♪ ♪ (phone ringing) ZOE (on phone): 'Sup?

This is Zoe.

Leave a voicemail.

(beeps) (Marion quietly sobbing) (people talking indistinctly) (phone ringing) TONY (on phone): Marion?

You okay?

I'm in trouble, Tony.

Where are you?

MARION: Borough Market.

Okay, stay there, I'm coming now.

(toolbox clanks) ♪ ♪ ♪ ♪ (people chatting softly) (softly): We need more.

We need to buy furniture and stuff.

Five ain't enough.

I told your boyfriend no more.

I'll tell them about the car.

Go ahead, tell them.

You're not getting another cent out of me.

♪ ♪ (sniffs) ♪ ♪ ♪ ♪ (door closes) ♪ ♪ ♪ ♪ (honking) JAKE (on phone): Boss?

Jake.

So I just had a phone call off the woman that researched the society photos of David Walker.

CASSIE: Right.

This is the woman from the local Conservative Party office?

Yeah, name of Mandy Halcross.

Turns out she's worked there for years, in one capacity or another, but her very first job there was in 1989.

Her mam ran the canteen and she used to help out during the summer holidays.

CASSIE: Right.

So... (exhales): She was 12 years old in the summer of '89.

(brakes squeak) And she'd never told anyone this before, as she said she's always felt too ashamed, but she just told me that during that five-week holiday period, on two separate occasions, David Walker sexually assaulted her.

♪ ♪ Boss, you there?

Yeah, I'm here.

How credible did you feel she was?

Well, there were no witnesses, there'll be no forensic, the suspect's dead.

So all I've got to go on here is instinct.

And I believed her.

It's nearly 30 years since this happened to her.

I'm the first person she's ever told, and... (sighs) It still ripped her apart when she did.

There are no newspapers involved, there's no conspiracy websites.

She has absolutely nothing to gain by telling me what she did.

So, yeah, I believed her, 100%.

Get everyone together for a full briefing.

We'll be back in half an hour.

JAKE: Guv.

(car horns honking) MARION: I don't know the man that they're asking about.

No, of course, I would never have hurt anyone.

(sniffling): I mean I...

I know you know that.

But the thing is, the police have found out some other stuff about some people that I, I hung about with in the '80s that I shouldn't have.

What people?

I, I lived in a flat.

I shared a flat.

I shared...

I shared a bed with a woman... ...called Sinead Quinn.

Who... She was a... ...a Republican.

What do you mean a Republican?

An Irish Republican.

I.R.A.

No.

I was messed up, Tony.

When was this?

It was in the late '80s.

So this, this, this is Enniskillen, this is the Baltic exchange.

I know.

How long were you with her for?

Not more than a year.

A year!

No, and I never met, I never saw any of...

But you slept with someone who thinks that blowing up kids... Yeah, but like I said, I was messed up, Tony.

Oh, yeah, we, we know you were messed up, Marion.

We've known that for years!

What no one's ever had the remotest idea of is why.

Christ.

How two sisters from exactly the same upbringing... Oh, God, yeah, I was wondering how long it would take before you brought my sister into this, yeah.

No, I'm not bringing your sister into... Oh, God, if you think she's so marvelous, Tony, why didn't you just marry her?

(sobbing) Do you know?

I have no idea who you are.

Really?

Oh that's it, walk away, off you go!

TONY: Goodbye!

You know what, Marion?

I'm beginning to think you could have done anything!

SUNNY: If he abused a kid, I don't give a toss what happened to him in the past.

In fact, if he was abused as a kid, it makes it almost worse.

He'd know, he'd know how appalling it was.

(sirens blaring) Except he would have been a very messed-up human being himself.

Obviously.

Yeah, sorry, don't buy that.

What do you mean, "don't buy that"?

That's just a fact.

You know, it's not my opinion that's a... Oh, for God's sake, come on.

Move, move!

(honks repeatedly) ♪ ♪ (boys laughing) ♪ ♪ What's up, bruv?

Oh, my days, Jamal, you'll never guess what.

What?

Well, he told me not to say anything, but... What?

♪ ♪ Seriously, what do you mean you don't buy it?

You really want to get into this?

A person who's been sexually abused as a child will be a very damaged...

Yes, and?

Doesn't give them give the right to go and abuse other kids, does it?

Well, of course it doesn't give them the bloody right.

I'm not talking about trying to justify it, I'm talking about trying to understand.

Yeah, understanding pedophiles, nice.

No, no, no, whoa, no, no, hang on, hang on.

When a kid who's been abused goes off the rails and does something awful, we don't just dismiss them as monsters, do we?

Uh, no, because they're children.

Right, right, so, so when does that kid suddenly stop being deserving of some understanding?

Was it on, on their tenth birthday?

Or their 12th?

Or their 14th?

How about when they're an adult?

Uh, no.

That's when we let them take proper responsibility.

And we punish them and we protect society from them.

Why the hell does it also mean we suddenly just stop trying to understand them, so maybe they don't do it again?

Because most abuse victims don't go and abuse others, and the ones that do choose to, and that is definitely beyond my understanding.

Are we done?

♪ ♪ So as of today, we are now splitting the investigation into two strands.

The first will follow our existing line of inquiry, that one of our persons of interest murdered David Walker because of some connection around the time of his death.

Sara Mahmoud's as a prostitute.

We're looking at a possible I.R.A.

motive with Marion Kelsey.

And his wife remains of interest, that's for obvious reasons.

And then Colin Osborne, the only person so far that we've conclusively proved actually met David Walker.

Murray, I want you to focus all your attention now on finding the Klein Egerton temp, Maria Gonzalez.

And Fran, we really need to speak to Sinead Quinn.

And any news yet on Colin and Sara's alibis for May the 8th?

Still waiting on both, I'm afraid.

Okay, we keep on that.

And then we move into... very different territory.

We already know that David Walker had a lot of secrets, and now it seems we've just found another.

So myself, Jake, and DI Khan are starting a second line of inquiry, to investigate if David Walker was murdered not because he was going to expose what happened to him 30 years before his death, and not because of any of these reasons, but maybe as retribution for sexual abuse he committed himself.

Now, two of these, at least-- Colin Osborne and Sara Mahmoud-- have dysfunction in their lives very consistent with a childhood trauma.

Now, all of them seem to have had some sort of connection with David Walker in the months before he died.

I think we have to consider the possibility that one and... maybe all of them, were victims of David Walker as children, and then years later took their revenge.

So I want to interrogate every single aspect of David Walker's adult life, from when he left school to when he died.

Okay?

(detectives answer indistinctly) Thank you.

(speaking indistinctly) ♪ ♪ I assume we're going to speak to the wife first.

Why don't I do her?

You start chasing down his past.

♪ ♪ (ladder steps creaking) ♪ ♪ ♪ ♪ (indistinct conversation) (shouting and laughing) (indistinct conversation) ♪ ♪ ♪ ♪ Right.

But obviously she can't read anything because you've got a password on it.

Oh, Jesus, Col.

I kept meaning to, I just... (voice breaking): I...

I forgot.

I'm sorry.

Right, well.

What is on there, then, that we need to be worried about?

Um... You texted me, after I told you about the police interviewing me.

Oh, you are joking me-- Jesus, Colin!

I know, I know!

Okay.

Look, she's a smack addict.

So, chances are, ten minutes after she nicked it, she sold it for 20 quid.

Chances are we will be fine.

FLORA: Daddy Simon!

Okay?

I think it's all gonna be absolutely fine.

Coming!

♪ ♪ (laughter on TV) SARA: How?

I'm not sure.

I guess he must have heard us last night, and then told someone, who told someone.

I think the school might know, as well.

(gasps) So we'll have to tell the other two.

(sobbing) ♪ ♪ (whispers): All right.

(sobbing) CASSIE: My colleague DI Khan is speaking to Mrs. Halcross again right now, but from the conversation we've already had with her, we're fairly confident that we're talking about the indecent assault of a child under 13.

(sighs) If this is true, I promise you, I knew nothing, absolutely nothing about it.

(distant, indistinct shouting) Which is why I know you'll want to help us as much as you can.

You don't need to use that.

You know the voice we use to make them think we're their friend.

I'll tell you what I know, because I'm a decent person, not because I think you like me.

When we first met, you mentioned that David did some voluntary work.

What sort of stuff, exactly?

He worked at our local hospital.

Um... at a nearby reform school.

He did stuff for a local children's charity.

I'm going to need an exact list, please, the names of the institutions and dates.

(sniffles) And the timeline I asked for, detailing your movements in the days before his death.

PAUL: Jason, Jason... No!

CASSIE: He was in tears afterwards.

SUNNY (on phone): Uh... good.

Incredibly apologetic.

I just think he's got enough crap to deal with right now.

Assaulting a police officer...

It wasn't an assault.

...is an incredibly serious offense, guv.

No, it was an accident, he was... highly emotional.

I don't care whether it was an accident or not, it's just...

I'm fine.

Let's just hope he doesn't go on to do something more serious, hey?

I'll see you tomorrow.

Night.

Grub's up.

HASSAN: We thought we should tell you the truth before you heard it from anyone else, and...

I'm going to speak to the school tomorrow and let them know what's happened.

ALI: What are my friends gonna say?

Hm?

Maybe it might be an idea for you to take a few days off, till things blow over.

Do you know the way that I deal with it, Ali, I just see that woman as a different person.

Sara Alazi was not your mum.

Sara Mahmoud is who she is, your lovely mum, my lovely wife...

They're gonna rip the piss out of me!

Ali, there's no need to swear, all right?

It's disgusting!

Sweetheart, please.

It's disgusting!

I'm sorry.

Get off me!

HASSAN: Ali, stop it!

Get off me!

(phone dings, buzzes) (door slams) ♪ ♪ (moaning) (door closes) What the hell have you done!

Don't blame me!

You were the one that told everyone!

She was the one who did it in the first place!

"She"?

Leave me alone!

Who the hell's "she"?

That's our mother you're talking about.

HASSAN: Ahmed, shush!

Just calm down.

♪ ♪ So where is he now?

Egham.

They moved there from Winchester.

But you've not been there.

Not yet.

So you are planning to go there.

Yes.

(fork clanks) And what are you planning on saying?

When you go to Egham?

With his wife there?

Who's... probably never knew anything about it, either?

I'll wait.

Till he goes outside on his own.

Right, what and follow him?

Okay, and then what, Shoestring?

(chuckles) I'll introduce myself.

Hmm... Hmmm.

So talk me through that.

"Hi, hi, "I'm, I'm Martin.

"You had sex with my wife 20 years ago.

Just wondered if we could chat."

It's probably borderline illegal, what you're doing, anyway, and I can't imagine for one second it's gonna make you feel better.

I mean he's... rich and hilarious and super-smart.

Does that make you feel better?

Or he's a horrible runty little goblin with halitosis.

Does that?

(cutlery clangs) Or he's ordinary.

Like you, like me.

(door opens and closes) Just... (humming) Don't make a joke about this, please, with Adam.

What do you mean, make a, make a joke?

You do that sometimes.

You find everything funny.

I absolutely do not, that is... Hey, guys.. Hiya.

Hi.

What happened to your face?

Oh, it's...

I...

It's a work thing, it's... (chuckles softly) Granddad, have you been beating Mum again?

(laughing): Not yet, but give it a few days.

She's a cheeky little sod.

Right, beer, and you can make an old man very happy, and tell me about your girlfriend.

♪ ♪ PAUL (voiceover): I have to put my child first, Tess.

I know you'll understand that.

He'd never hurt Becca, he loves her.

I'm not really talking about physical violence.

No, no, no, no, no, Paul.

She's 15.

(exhales) How can you even begin to suggest... Well, you clearly had no idea what sort of person your husband was.

Why should it be any different with Jason?

Because I'm his mother.

And he's his father's son.

I'm sorry, I really am, but Becca is my only concern right now.

I'll call you.

We'll be staying at my sister's for now.

I just need a little time, Tess.

Work out what's best for us all.

I do love you.

♪ ♪ ♪ ♪ (engine starts) ♪ ♪ (doorbell rings) OMAR: Sara?

Sara!

Sara, are you there?

OMAR: If you can hear me Sara, I just want you to know, we're all here for you.

If you want to talk.

Any of you.

(mail slot closes) (birds chirping) ♪ ♪ Well, yes, there were some rumors about how Mr. Walker was with some of the kids on the ward.

Personally, I never saw anything, of course.

Of course.

♪ ♪ Yeah, Quinn.

Yeah, that's right.

She was released as part of the Good Friday Agreement.

And we are looking for any kind of address after December '99.

That'll be great.

♪ ♪ MAN (voiceover): It was a kid's charity and Walker was a volunteer, who I did have suspicions about.

But obviously, I didn't know anything for sure, or I would have reported it.

Obviously.

♪ ♪ (keys rattling) (door closes) How was your mum?

Irritating.

(chuckles) Any word from Zoe?

Yeah, yeah, she's texted her parents, she's fine.

But, um... well, she's two days now without any care, so... And what about us?

I don't know.

That's up to you, I suppose.

If you can forgive me.

No, Maz, it isn't up to me.

'Cause ever since I've known you, there's been this great big wall around you that's always stopped me getting past a certain point.

And the simple fact is, that if you want us to survive... ...you've got to take it down.

♪ ♪ (distant, muffled): Mr. Osborne.

Mr. Osborne.

(clear): Mr. Osborne.

Sorry?

Your daughter's school just called.

Apparently you were meant to be there to pick her up an hour ago.

Oh, my God.

I'm sorry, excuse me, sorry.

♪ ♪ (brake engaged, engine stops) ♪ ♪ Thank you.

(crying) Oh, I'm so, so sorry.

(crying) I'm so sorry, I'm so sorry.

Come on, come here.

Let's go home, that's it.

(moans) (cries) ♪ ♪ ELLEN: Yes, I was at that reform school.

Yes, we all knew what David Walker was, but... We were kids who'd broken the law.

Who was ever going to believe a word we said?

The truth is, a lot of them didn't mind anyway, 'cause... if they got friendly with him, did what he wanted... ...they'd get invited to the gatherings.

The gatherings?

♪ ♪ ♪ ♪ (car door closes) Sinead Quinn?

You're a hard woman to find.

DC Fran Lingley.

I wonder if you could spare me five minutes of your time.

He just got his days mixed up.

All I would say is, if you felt a family session could help, to talk about time management and stuff.

(phone ringing) Yeah, absolutely-- no, great idea.

Do you need to get that?

(phone ringing) Yeah, sorry, that's probably him on his way back home with Flora.

No problem, I'll let you get off, and tell him not to worry-- we've all been there!

Great, thank you, Janet.

Speak tomorrow.

Okay, great, bye.

Col?

TYLER: Is that Simon?

Who's that?

It's Tyler, how're you doing?

What do you want?

Straight to the point, I like that.

Well, since you ask, what we want is 20 grand.

Or we tell social services about your husband being interviewed in connection with a murder.

♪ ♪ CASSIE: Our witness, an Ellen Harriet Price, told us that a number of these "gatherings" took place between 1981 and 1983, and they were held at a house in Brentford, and Walker was a regular, as were a number of other men from various walks of life.

But most importantly, they were also regularly attended by children from local care homes, local borstals, and from the streets.

Now, these vulnerable kids were plied with drink and often drugs, and then on a number of occasions, sexually assaulted.

I think we need to consider the possibility that one of these people was taken to this house, assaulted by Walker, and then, eight or nine years later, they've come across him again and they've decided to take revenge.

The question is... ...which?

♪ ♪ The I.R.A.

wouldn't have touched her with a stick.

She was just a messed-up middle-class kid wanting to piss off Mummy and Daddy.

In fact, her commitment to the cause was pretty accurately demonstrated when the police knocked on her door about me, a few years later.

Did you ever see her with this man?

(chuckles) No.

But she showed me a photo of him once.

Really?

This man?

You're sure?

Yeah, I'm sure.

In what context?

She said he worked for the Tories, had connections with Thatcher.

She thought he was a potential target.

Target?

We weren't interested.

Too small-time.

But, aye, she wanted us to kill him.

♪ ♪ (click) CUMMING: Next time, on "Masterpiece Mystery!"...

Yes, that one over there.

CASSIE: How sure?

100%.

Does the address mean anything to you?

No.

No.

Do you recognize it?

No.

Maybe they were all at one of these parties.

They all knew each other you mean?

Why not?

CUMMING: "Unforgotten," next time on "Masterpiece Mystery!"

♪ ♪ Go to the "Masterpiece" website-- listen to our podcast, watch video, and more.

To order this program on Blu-Ray or DVD, visit shopPBS.org or call us at 1-800-PLAY-PBS.