Case Sensitive (2011–2012): Season 2, Episode 1 - The Other Half Lives: Part 1 - full transcript

Ruth Blacksmith prepares to divorce estranged husband Jason to marry the younger Aidan Harper,despite Aidan's confession that he once 'hurt a woman,who later died',named Mary Trelease. Unbeknown to Ruth Jason and Aidan had fought and now Jason is found murdered,his sister suspecting Aidan,who has no alibi. Aidan is also evasive when Ruth questions him about Mary so she follows him and sees him embrace another woman,after which he flees. Returning to their house Ruth locks him out when he comes after her but forensic evidence leads Charlie to arresting Ruth as the killer.

Aidan!

Where are you?

Aidan!

Aidan?

Are you there?

Aidan?

Aidan? Argh!

I thought something
had happened to you!

What are you trying to do to me?
I'm sorry. I'm sorry.

What the hell are we doing here?

I wanted to ask you a question.
What?



Oh.

Ruth, will you marry me?

I'm serious.

Yes.

Yes, yes!

Yes!

I love you.
I love you.

Before I hear any protestations

about who is and who isn't
working on this case,

I'm not interested.

It's a big fraud operation
and that demands a big response,

so you'll all be involved.

Anyone shirking that responsibility
will have me to answer to.

Attention to detail is paramount.



Half the team will be out on
the road to take witness statements

and half will go
through their bank transactions

to match them to the records
of the accused.

That information will
need to be carefully collated...

It would be better if those taking statements
were responsible for the bank records as well.

By DC Waterhouse A smaller team would
be a more efficient one, that's all.

What DC Waterhouse is trying to say is
that would be an excellent idea, sir.

Don't try to get out of it, Zailer.
This lot did it for the money.

You'll do it because
it's your job.

Oh, 'Thank you for trying
to help me out there, Charlie'.

'Oh, that's no problem Simon'.

How long will it take your divorce
to come through, do you think?

Oh, I don't know.

However long it takes,
we've got each other now.

Listen Ruthy...

I've been wanting to
tell you something but...

I'm not sure if I can.

What is it?

A long time ago...

A long time ago, I hurt someone.

Well, we've all hurt
someone in the past.

I'm sure you didn't mean to.

She died.

Who died? What happened?

Whoa, slow down.
It's not what you think.

OK? It's just...
You have to trust me, please.

Aidan, what happened? I don't
even know if I can talk about it.

Not yet. I will, I promise.

What? What is it?

You have to tell me what it is.
I...

Aidan!
I... I can't.

Aidan, please, you have to tell me.

She...
What?

I can't, Ruth.

I'm sorry. I can't.

All right.

All right. It doesn't matter.

Look at me.
It's all right. It's OK.

What do you make of this report?

Fiver says he's shagged her by
the end of the week, eh, Sarge?

Don't be pathetic, Sellers.

And change!

Come on, let's go! Let's go!

Come on, let's go!

Come on, more, more!! Punch! Punch!

Come on, push!

Come on! More! More! More!

Oooh!
I'm so sorry.

Are you OK?

Did I hurt you? Are you OK?
No, it's fine. I'm all right.

Move your jaw, let me see. Oh, God.
It's fine.

Listen, you've got
to let me buy you a coffee.

It's all right, really.

No, it's the least I can do
after dislocating your jaw.

OK, but I'll still get
my revenge next week.

I'm sorry
to take my stress out on you.

Bit of police brutality?

Is it that obvious I'm a cop?

No, no.
One of the other ladies said.

What do you do?
I teach. At St Mark's Comprehensive.

OK. Well, that's a kind of
policing, isn't it?

Can I ask you a policey
kind of question?

Yeah, of course.

If someone had a criminal record,
how would you find out?

Well, if it's someone at the school,
might be working with the kids...

No, it's nothing like that, no.
It's a friend of mine.

Her partner said something about hurting
somebody once but didn't say, how, why...

If she's really worried she should go to
the police and talk about her suspicions.

I don't think she'd go that far.
Ruth, in my experience,

if a man's hurt a woman in the past,
he'll usually do so again.

Yeah, actually,
I don't think it's that big a deal

but I'll tell her what you said.
OK.

Thanks for the coffee.

Hope the jaw's OK.
See you next week.

Hi.

Hey. How you doing?
Good.

Not at school?
I'm on a break.

This thing's in a dreadful state,
needs a complete overhaul.

Look, you know what you said the
other day about hurting someone?

I can't get it out of my head.

Could you
at least tell me who it was?

Ex-girlfriend?

Aidan, please, if you tell me -
Mary.

Mary Trelease was her name.
Are you happy?

And she was?
I thought you said you trusted me?

I do trust you.
I have to finish this.

Fine.

See you later.

She said he'd hurt someone before

and it was pretty clear to me
she was talking about herself so...

She's worried,
I think we should follow it up.

Is this a poorly disguised attempt to
get yourself off the fraud case, Zailer?

No, sir. I just think it would be
worth somebody checking it out.

Zailer, our job is to investigate
crimes that have already been committed,

not to follow up gossip
from your pilates class.

Thank you, sir.
For your time, your consideration,

your limitless wisdom!

Don't know why I bloody asked,
it'll only take five minutes.

What will?

Ruth Blacksmith?
Married to Jason Blacksmith.

Who's she?

15 Elm Close.
Let's see if he's got any previous.

Aha.
Assault.

Against another man, Aidan Harper.

No charges brought.

It was only a few months ago.

I'm going to pay them a visit.

I can come.
No. I'll go.

I'm at the dentist.

Hello?

Hello, Ruth?

Ruth?

Victim is Jason Blacksmith,
34 years old,

worked with his wife
at St Mark's Comprehensive.

Cause of death?
Single stab wound to the neck, sir.

Break-in?

No sign of forced entry.
Where's the body?

Straight upstairs. All right?

No gloves, DC Williams.
Stay outside, please.

Weapon?
Nothing yet.

Apparently not a knife.
Could have been scissors.

Maybe picked up from this desk,
which suggests...

Wasn't premeditated.

Probably died on Friday so
he's been here for a couple of days.

Would have been longer
if I hadn't popped in, sir.

You thought your friend
was at risk, not him.

She's more of an
acquaintance, sir.

He's been dead for several
days and she hasn't noticed?

The neighbours say she
moved out a few months ago.

They split up in the spring.

She didn't tell you that?

Well, like I said,
we're not exactly friends.

Who's this?

That's her. I'd better go down.

Just because she's a mate of yours,
Zailer, don't go soft on her.

No, sir.

I know you must be reeling, but
I do need to ask you some questions.

Did something happen
between you and Jason?

Did you have a fight?
An argument that got out of hand?

God, no. Jason
would never lay a finger on me.

When did you last see Jason?

Three or four weeks ago.

I came around to talk to him
about the divorce.

It was after school.

And when did the separation happen?

Four months ago.

And who initiated it?

Me.

Why was that?
Because I met someone else.

Was the name of the man
you left Jason for Aidan Harper?

Yes. Jason and Aidan had an argument
here, didn't they, a few weeks ago?

No, I don't think so.

Well, they did, because neighbours
called police to complain.

Jason hit Aidan.
You didn't know that? No.

It was Tuesday the 3rd.
You live with Aidan now, yeah?

Yes. And you didn't notice he came
home one night having been in a fight?

Look, I don't know what
you're talking about, OK?

It's OK. It's OK.

Was it Aidan you were talking
about in the car park that day?

No.

But there was some animosity
between the two men, yes?

Look, Aidan would never do
anything to hurt Jason, all right?

I didn't want to either.
I loved him.

OK, OK. You know, we can
talk about this later, all right?

Forensics have to take some
fingerprints and some other things

but then they'll drive you home, yes?

I'm going to give you my numbers,

home and at work

and I want you to call me if
there's anything that's worrying you

or even if you just want to talk.

Thank you.

Can you get cracking on the
door-to-door, DC Williams? No problem.

I should bloody hope
it's not a problem, cheeky cow.

So she loved Jason so much, she left him
three weeks after meeting someone else.

I still think it was Aidan she
was talking about in the car park.

If she was lying about that,
she could be lying about everything.

You know, it's not a crime
to fall in love, Simon.

Great, thanks.

Aidan Harper. No previous.

Mr Aidan Harper?
Yeah.

Detective Sergeant Charlie Zailer.
This is DC Simon Waterhouse.

We're investigating a murder. Do
you live here with Ruth Blacksmith?

Yeah, yeah, I do.
Why, has something happened?

Her husband, Jason Blacksmith, was
found dead in his house this afternoon.

We need to ask you a few questions.
Is it all right if we come in?

Yeah, yeah, of course.
Thanks.

So does Ruth know?
Yes. We've just spoken to her.

How is she? Is she all right?

She was understandably upset.

Yeah. Where is she?

Someone will bring her home shortly.
Did you know Jason Blacksmith?

Er... not really.
I met him once, briefly.

When was that?

Couple of weeks ago. Went round
to collect some of Ruth's stuff.

The evening of the 3rd?

Yeah, yeah, something like that,
could have been.

That was when neighbours phoned to
complain about a fight between you.

It... it wasn't a fight.

He was shouting,
he'd been drinking.

He took a swing at me.
It was nothing, really.

Did you hit him back?

I pushed him, I pushed him off.

Did you tell Ruth about the row?

No. I didn't want to worry her.

Is it true that you told Ruth
that you hurt someone once?

She told you that?

Just clarify for me
what you mean by 'hurt', sir.

It was... it was nothing.

You're taking this
completely out of context

But you did hurt someone?

I was speaking about some friends,
it was said in confidence.

It was... It was a metaphor.
Where were you last Friday?

Sir.
You think I did this?

I had a job in the
morning, yeah?

And then I came back
here in the afternoon.

In the evening, I was practising
for a performance next week.

So you play professionally?
No, it's... it's in my old college.

And Ruth was here with you?

No. She was out with some friends,
I think, somewhere.

What time did she get back?

I lose track of time
when I'm playing.

Sorry, do you mind?

Is there anyone else
who can verify your whereabouts?

Er... No.

We need you to report to the station
for fingerprinting and DNA processing.

Are you willing to do that, sir?

Yeah, yeah, sure.

Thank you very much.

Ruth joined us
seven or eight years ago.

And when the PE vacancy came up,
she suggested Jason.

I was a bit concerned about having a
husband and wife working together at first.

You know, relationships in the work
place. Not usually a good idea. No.

No.
Actually, it worked well.

Until a few months ago,
when this guy Aidan turned up.

Did you meet him?
Only that once,

when he came to the school
to tune the pianos.

What did you think of him?
He did a good job, didn't say much.

But Ruth was knocked for six by him.

At first it was all about what
a musical genius she'd uncovered,

and then...
she just fell head over heels.

And then she left Jason?

Within weeks.

Everyone was completely shocked.

Her and Jason had
seemed perfectly happy.

How did he take it? The poor bloke
was completely broken-hearted.

And of course, seeing her
every day was crucifying him.

It became clear he was drinking heavily.
I had to sign him off, eventually.

When was that?
Two months ago.

Seemed unfair, to be honest,
he should be the one to lose his job

but I have to think
of the children first and foremost.

And Ruth, how did this affect her?

Just the opposite. Couldn't
hide her happiness, like, euphoria.

She was completely
and utterly besotted.

Love that is not madness
is not love.

What?

It's a quotation.

Don't get it.

It means, it's not logical, is it,
who we are attracted to.

I mean, haven't you found that?

Sorry, why is this relevant?

Well, we're looking
for a motive here.

I think evidence
would be more useful.

Oh, thanks for the advice!

Hey. You OK?

I can't believe he's
not here any more.

I'm so sorry, Ruth.

He was a good person, you know.
He was kind. Yeah.

What have I done to him?
Stop it. You can't blame yourself.

I destroyed his life. Please. Come
here. No. I need to be on my own.

There's someone upstairs
to see you, Sergeant.

Santa Claus, Archbishop of
Canterbury, Attila the Hun?

It's the sister of Jason Blacksmith.

The sister of Jason Blacksmith
to see you, Sergeant.

I introduced them.
Ruth was my friend first.

I said, 'You should meet my brother'.

Wish I never bloody had now.
When was that?

Over ten years ago.

Ruth was like one of the family.

Then suddenly out of the blue,
she met this new bloke,

turned her back on Jason
and walked away.

Do you think Jason
wanted to get Ruth back?

He was obsessed with it.

I said to him, 'If she can do this to you
after all these years, she's not worth it'.

He couldn't see it.

He kept phoning her.

Was Jason seeing anyone else,
as far as you know?

No. It was all about her.

No-one else in his life he
might have had a problem with?

The only person he had a problem
with was Ruth's new bloke.

He hated him.

I understand you were there the night
Aidan came around to see Jason.

Can you tell me what happened?

Aidan turned up,

started saying some vicious things,

taunting him,

saying Jason meant
nothing to Ruth now.

It was almost like he
wanted Jason to hit him.

Of course, eventually he did.

Had Jason been drinking?

He'd had a few.
He didn't used to drink

and I never knew
him hit anyone before.

He just made him see red.

And did Aidan hit him back?

No. He ran off. I thought
at the time, he'll be back.

Morning.
Hiya.

Look, I'm sorry about last night.
I wasn't thinking straight.

It's fine, he was your husband,
you were upset.

Do you have to rush off?
Can't you stay for a cuppa?

When the police came
asking questions,

they said you told them
I'd hurt someone. Oh, God no.

Something I've never told
anyone before, you told the police?

No, no, look, I met her at the gym and it
was long before any of this happened, OK?

I didn't say it was about us or you.

I said I was asking
on behalf of a friend.

Look, you can't say something like
that and expect it to have no impact.

I was worried.

Who is this woman Mary?

I thought you said you trusted me.

I do trust you. Christ, Aidan,
look what I've given up for you!

Yeah, wonderful Jason.
You made that quite clear.

What?

I have to go to work.

Right, so Ruth's fingerprints
are all over the house

but that's not really surprising,
she's lived there
the last five years.

Also, Jason's sister and
two other sets as yet unaccounted for

neither of them
matching Aidan Harper's.

Sellars, what have you got?

Jason's computer
shows nothing unusual.

Bit of football, bit of porn.

All very soft stuff. Nothing
I'd call out of the ordinary.

And his phone?

In the last month,
he called Ruth 64 times

but she usually didn't answer.
Neighbours?

I got nothing from the door-to-door.

Nobody saw or heard
anything on the day.

In fact, none of them have
seen much of Jason at all recently.

I'm sorry, nothing?
You've got nothing to tell us?

Well, I can't just invent
evidence when there isn't any.

What do you expect me to do?
I expect you to go to every house.

Did you go to every house
on the street?

Well, some people weren't in and I
haven't had a chance to go back today yet.

You'd better get back there.

I think we'd all be grateful when you
start doing your fucking job, DC Williams.

Anything from Aidan?

Both parents deceased.

He studied at the Guildhall School
of Music in London from 2001-2003

but failed to graduate. He's been trading
as a piano tuner and restorer since 2006.

I spoke to most of his clients,

they only see him a couple of times a
year, they don't know much about him.

Thank you very much. That's great.

OK, come on, everybody, someone
must know something about this bloke.

Sergeant Zailer? I'm Professor Fox.

This is DC Waterhouse.
Thanks for seeing us.

I'm afraid I only have
a few minutes between classes.

I understand you
want to talk about Aidan Harper?

Yes. He's due to play here
in a few days, is that right?

He'll be playing in front of
a panel of tutors to see if he can
be readmitted as a mature student.

Do you remember him when
he was a student here originally?

Of course.
He was exceptionally gifted.

I had very high hopes for him.

Yet he didn't complete the course,
why was that?

Well, he was due to play
in a final year concert,

his debut, if you like,
as a professional soloist.

Been practising for months.

A few days beforehand,
he just didn't turn up at college.

That was it,
I haven't seen him since.

What happened to him?
I presume his nerves got to him.

Being a soloist is not just about
talent, it's about temperament.

It was a great disappointment to me that
Aidan couldn't control his emotions.

So how did this audition come about?

A friend of his came to see me,
Ruth... Blacksmith.

Mm. A few weeks ago. She
brought me a disc of him playing.

It was good.

She clearly has ambitions
for him to resume his career.

And what are his chances?

We shall see.

This is where he'll be playing,
if he can handle the pressure.

If he does, and he plays well,

then, maybe there can be
a future for him. Maybe.

I just love the German romantics, don't you?
That's Russian.

Min! Thank you. From the beginning.

Professor Fox was all
heart, wasn't she?

Full of sympathy and understanding.

What?

This morning?

She's not pulling her weight,
Simon, she deserved it.

It's not like you.

Hi.

I wasn't sure you'd be in today.

Gives me something to do.

Well, this isn't a formal visit.

I was just dropping by
to see how you're doing.

As a friend.

As a friend?

Thanks.

We went to see Professor Fox today.

She said you'd been to see her,

hoping to get Aidan's career
back on track.

Yes, well, he's a wonderful talent
and it was just going to waste.

Why did he drop out of college,

why did he stop playing the piano
for all those years?

Well, I think they were tough
on him.

He needs encouragement, support,

someone who believes in him.

Do you still have a key
for Jason's house?

Yes. It's still half my house.

Does Aidan know where it is?
Aidan did not kill Jason, OK?

Ruth, I know how much you love him.

But you've only known him
for six months.

All I'm asking, please,
is don't keep anything back from us

because if you are and we find out you're covering
for him, you're going to be in deep shit.

I think you should go.

She's standing by her man
but he's still our number one, sir.

OK. Team all right?
Yeah, they're good.

Because if it's not it's down to
you, understand?

I don't want you coming
whining to me about weak links.

I'm not whining.
Women working together.

Cats in a bag, if you ask me,
always someone's time of the month.

Sir, if you're implying -
I'm not implying anything, Zailer,

I'm telling you straight.
No more handbags, OK?

Thank you, sir

Have some cake, sarge!
No, thanks.

Have you got that path report
back from the lab?

Oh, yeah. Here you go.

It's time of death, some time
Friday night between 10pm and 1am.

His blood alcohol's
through the roof. 197.

Equivalent to ten pints of lager
or six pints and four doubles

or two bottles of wine. Yeah,
all right, we've got the picture.

He drank at the George
pub on Bank Street.

Owner says he was in Friday night
and he's checking his CCTV now.

I'll come with you.

Watch him Sarge, two ginger
beers and he's anybody's!

Do you know who I'm talking about
when I say Jason Blacksmith?

Yeah, yeah.
Did he come in here often?

He used to come in two
or three times a week but recently
it was nearly every night.

He used to sit at that table
in the corner.

Right.

Did he come with friends
or talk to other customers?

It was mostly about the beer,
to be honest.

I had to take his car keys off him
a couple of times.

So you were friendly with him?
I wouldn't go that far.

Although he did tell me that his wife wanted
a divorce and that he was going to fight it.

Did you speak to him
on Friday night?

Just said hello.

And was he chatting
to anyone else at all?

We were really busy, I'm afraid,
we had a hen party in. Mayhem.

Do you know the name Aidan Harper?

Doesn't ring a bell.

Sorry, no.

Why, is he your prime suspect?

Very good.
No, he's just helping us with...

With your enquiries.
Yeah.

I've got Jason on camera,
if you want to have a look.

Great.

Thank you.
After you.

OK, here he is arriving at 9.37.

This is the only camera you've got,
the one on the door?

Yeah, that's it.

And... there he is leaving again
at 11.03.

There are your hens.

Again.

OK, no sign of Aidan.
No.

I need to take this with us,
is that OK?

Yeah, of course. Be my guest.
Thank you.

Aidan!

Here you go, come on.

Come on! Come and have a drink.

Oh, come on, vinegar tits,
loosen up for once, eh! Come on!

Happy Birthday, Colin.

We're off down The Anglers,
Sarge, you coming?

Er... Yeah, I'll catch you up.

Come on, Sellers!
All right, Willy! I'm coming!

Hi.
Hi.

Is this the Blacksmith murder?
Yeah.

That's the stuff
we're still working on

and those are the prints we've
already matched so help yourself.

Great.

Excuse me.
Could you confirm this is correct?

I need to be 100% sure.

Yes, yes, it has been
checked and double checked.

I can assure you, it is correct.

Yeah. It's me.

I think I've got something.

Ruth. What are you doing?

You lied to me.

Let me in and I'll -
You lied to me!

Let me in!
No!

Open the door, Ruth!
Go away!

Ruth, you have to let me in!

He's trying to get in!

Who?
Aidan. He's around the back.

Ruth, Ruth, Ruth!

I'm arresting you on suspicion of the
murder of your husband, Jason Blacksmith.

All right, let's go.

This is Ruth Blacksmith.

She has been arrested on suspicion of the murder
of her estranged husband, Jason Blacksmith.

She has been brought straight here from
her current address for questioning.

Now I've issued you with a caution,

I'm going to search you. Are you
carrying anything that may hurt me?

Address?

Date of birth?

We should let her stew overnight.

Buy herself some time.

No. If we go in hard now,

we'll get a confession.

Are you OK?

I'm fine.

Yep?

Great.

Brief's here.

You remember the last time we spoke,
what I said to you?

I told you to tell the truth,
didn't I?

And that if you didn't,
it would be very bad for you.

Did you understand what
I meant when I said that?

Yes.
Right.

For the benefit of the tape,
I am now showing the witness
exhibit number CZ08.

Do you know what that is?

No.
This is a letter to Jason

from his solicitor
about the divorce.

Have you seen it before?

I don't remember.

You don't remember?

It's got your fingerprints on it.

It's dated the day before
Jason died.

He would've received this letter
the day he was murdered.

We know you were in the
house that day, Ruth.

But you told us you hadn't seen
him for three or four weeks.

You lied to us, didn't you?

Didn't you?

Why did you go round?

My stuff was there.

And what happened?

When I got there,
he was in a really bad way.

He was talking about suicide.

And I felt really guilty
about what I'd done to him.

And then I...

I know I shouldn't have, but...

What?

I couldn't bear to see him like that.

I still loved him.

So I er...

I gave him a hug and...

You had sex with him?

I'd been with him for 10
years, for God's sake.

But then I was terrified
Aidan would find out.

He was...

jealous of Jason,
scared that I'd get back with him.

Had this happened before?
No.

No, never.

When I met Aidan, it was erm...

That was it.

We had to be together.

But I hated myself for
what I'd done to Jason.

So, what happened after you had sex?

He thought I'd changed my mind.

That we were gonna
get back together.

It was like leaving him
all over again.

He was sobbing and it was awful.

That was the last time I saw him.

Jason threatened to tell Aidan,
didn't he?

That you'd slept together.
No.

Is that why you killed him,
to stop Aidan finding out?

I didn't kill him.
Heat of the moment? No!

OK. That's enough for today.

Interview terminated at midnight 15.

Start again tomorrow.

Just cos she slept with him
doesn't mean she didn't kill him.

I know!

Just go home, get some rest.

Morning, darling.
Fuck off, Sellers!

Zailer, what's going on?

Yesterday it was all about the bloke, now
you've arrested the girl. Is she guilty?

She says that she went to the house the day that
he died, but they had sex and then she left.

Sex with the ex, eh?

Can't make up her mind, can she?
What does Waterhouse think?

I don't know, sir.
I'll ask him when he gets in.

Good copper, Waterhouse.
Don't take him for granted.

No. I'll bear that in mind. Well,
we can't hold this woman for ever.

Why aren't you in there now?

Because I'm talking to you, sir.

Looks like it's you and me, Sellers.

Did you get some sleep?
Not really.

OK, Ruth. I...

I really need you
to start helping me.

And you really need
to help yourself.

That day at the gym when
you told me about a friend

who'd mentioned a partner
who'd hurt someone.

I've spoken to Aidan, and
I know you were talking about him.

He said he'd hurt someone a
long time ago and that she had died.

It was like he needed
to get it off his chest.

But then he wouldn't
say any more about it.

Eventually, I got a name out of him.

Mary Trelease.

And who was that?

It didn't mean anything to me.

But then, last night,
I followed him into town.

And I saw him with another woman.

I couldn't believe it.

I got back and...

I went through his stuff
and I found... a photograph.

For the tape, I'm showing the
suspect a photograph that was in her
possession when she was arrested.

DC Sellers?

No, it's not that one.

The one at...
I'm sorry.

Was it this photo?
It says Mary on the back.

Yes. And you think
this is Mary Trelease?

Well, I... I don't know.

But if it is, she's very much alive.
I saw her with my own eyes.

And this is why you were arguing with
Aidan when we arrived last night? Yes.

Everything he's told
me has been a lie.

What's going on?

I thought we were going to
interview Ruth.

Just did. You weren't around. I was in
the evidence room. Why didn't you call me?

Sorry, Simon.
I've got a murder to solve.

Where's Ruth? She's all right.
She's at the station.

So it's your recital at
the college tomorrow.

Is that right? How's it going?

You can't really think
Ruth did this, can you?

She's not capable
of killing someone.

Ruth has admitted to us that she was at
Jason's house the day he was murdered. What?

And they had sex.

I don't believe you.
She admitted it to us under caution.

Ruth also told us that she saw you
last night with another woman.

And that woman is Mary Trelease.
Is that true?

Yeah. She's my... sister,
my stepsister.

That's not the impression Ruth got.

Well, it's the truth.

That's what I was trying
to explain to her last night.

So, you told Ruth
that you hurt this person?

And that she died?
And now she's very much alive?

She made assumptions
that she shouldn't have.

I would... never... hurt my sister.

Never. You can ask her yourself.

We intend to.

We're gonna need her address,
telephone numbers and place of work.

Fine.

I'll wait outside.

He's hiding something.

It was clearly news to him
that Ruth slept with Jason.

Doesn't rule him out. I still think
he's deeply jealous of Jason.

Why are you dreaming up theories
and trying to make facts fit?

Focus on evidence.

We're gonna have to let Ruth go.

Human beings have things called
emotions, Simon. Ring any bells (?)

Ruth? We're releasing you on bail,
pending further investigation.

Thank God.

And I should also tell you that we
went to talk to Aidan this morning.

You told him.

I've really fucked everything
up, haven't I?

But I can tell you that he claims that the
woman you saw him with, Mary Trelease...

is his stepsister.

Well, why wouldn't he...
tell me he has a sister?

What HAS he told you
about his family, Ruth?

Both his parents are dead.

I thought he was an only child.

There's a lot you don't know
about Aidan, isn't there?

While you're both
under investigation,

I suggest that you
do not go back to Aidan's house.

But I have to speak to him.

It's for your own safety, Ruth.

She's ready to go.
OK.

Hi.
Has anything you told me been true?

I was going to explain about Mary.
I don't know who you are any more.

What about you, Ruth?

You swore there was nothing left
between you and Jason.

Did you kill him?
What?!

How can you even ask me that?

I think you'd better leave.

Aidan, please!

Mary Trelease?
Hello.

Detective Sergeant Charlie Zailer.
Thank you for meeting me.

Er... do you want a cup of tea
or anything? No, thank you.

Do you know why I'm here?
Aidan told me

all about the murder last night.

Right. He said he thought
that you suspected him.

But you just... have to know
it couldn't have been Aidan.

He's the most gentle
and artistic soul.

OK.

So you were with him last night.
Where did you go?

We met up for a drink on the South
Bank to help get his mind off it all.

Have you met his girlfriend,
Ruth Blacksmith?

Yeah, he's mentioned her,
but we've... we've never met.

OK.

He hasn't mentioned to her
that he has a stepsister.

Which is... unusual.

Have you any idea why that might be?

They'd... they'd only been going out
a few months. I don't know.

Ruth also said that he says
that he... hurt you and...

and that you were dead.

Can you think why he would say that?

God. Look. Aidan has...

a tendency to...
overdramatise things.

We have a complicated history.
What does that mean?

My mother was a single parent.

When I was eight,
she met Aidan's father.

His mother had died when he was little,
and we became a family, of sorts.

You might call it dysfunctional.
Dysfunctional?

My mother was an alcoholic. And when
she'd drink, she'd become violent.

Er... Aidan was always
protecting me from her.

But it meant that he bore
the brunt of her... abuse.

Er... and then when she died,

I think he just wanted to put
his whole past behind him.

And that involved cutting ties
with me, which... which was painful.

We haven't had much contact
until recently.

Recently? So... what happened?
What changed?

Well, I think... I think having Ruth
in his life made a big difference.

Made him happy again.

I know how you feel about the
importance of motive over evidence.

But I still think Aidan's our man.

Even his stepsister, Mary,
says they've been estranged

for the past 10 years, but recently
they've been building bridges.

And that's all thanks to
Ruth's influence.

So everything,
his whole stability - his music,

his professional rehabilitation,
even his relationships, all thanks to Ruth.

Now, if that's threatened
by Jason trying to get her back...

I reckon that would be enough to
push him over the edge. Don't you?

Sorry.

Can I have a word with you,
DC Waterhouse?

What are you doing with that girl?

We're looking into break-ins and
aggravated burglaries in the area.

Amber thought it would be a good
idea - Are you sleeping with her?

What? I don't care if you are. It doesn't matter
to me! It's just... it's affecting your work.

You're distracted, unsupportive.
You're not even listening to me!

I'm trying to hold the team together
and you're being totally unprofessional!

I think you're the one
being unprofessional.

What about you
and this business with Sellers?

That was a dare.
That was a joke at an office party!

I'm not talking about that.

I'm talking about you taking him into
an interview completely unprepped.

Because you were too busy
chatting up Little Miss Sunshine!

You know something? I think you're losing
it. You're completely losing the plot.

You are becoming
impossible to work with!

I'm not gonna listen
to this conversation.

And another thing.

Go fuck yourself!

Morning.
Morning.

You OK?

Yeah, I just...

couldn't sleep.

What time is it?

Um...

Just before six.
We should probably get off.

Yeah.
Gotta get some clean clothes.

Yeah, whatever you need to do.
I probably should do that.

Do you want tea or
coffee or anything?

Oh, shit. There's no milk.
No, I'm fine, I'm fine.

I don't think we should rush into -
No.

Definitely not.

I'm gonna go.
Yep.

"Hi. I can't take your call at the moment.
Please leave a message."

How are you doing?
Yeah, I'm at the station.

Yeah. No.

Right. I'm on my way. Yep.

Got it.

Thanks for that, Amber.
Great work. And nice top.

Oi, Willie!

Nice top (!)
Shut up, Sellers.

This is the house
where Aidan and Mary grew up.

When you said the mother
died 10 years ago,

I realised it's the same time
Aidan suddenly left college

and stopped playing the piano.

So I looked for death certificates
for a Trelease.

It's not a common name, so it
wasn't hard to find. Here she is.

Mary Trelease?
Same name as her daughter.

So when Aidan said he hurt someone
and she died, he was...

Talking about his stepmother.

I've been talking to
Mr and Mrs Nesbitt next-door.

They remember the family vividly. The
father was always away on business.

The mother was a heavy drinker,
just like Mary said.

They said they felt sorry for
the kids, having to put up with her.

On the day she died, the first
the Nesbitts heard about it

was that Aidan turns up on their
doorstep in the middle of the afternoon.

He's in a bad way, says his mother
has fallen down the stairs.

Mrs Nesbitt phones for an ambulance.

While Mr comes back
over here with Aidan.

OK. So Mr Nesbitt finds the mother
lying at the foot of the stairs.

She's got a cushion
underneath her head.

Now, Mary is trying
to resuscitate her.

Mr Nesbitt got down and tried to give her
mouth to mouth, but... it was no good.

None of that is in
the coroner's report.

So what you're saying is,
did she fall...

or was she pushed?

Yeah. What was mentioned
in the coroner's report

is she had a high level of alcohol in her
bloodstream, liver damage and pleurisy.

They conclude death from
heart failure following trauma.

So, after she fell, or was pushed,

she landed...

here.
Yep. Right. OK.

So, I'm Aidan, this is mother.

She's unconscious - And drunk. I reach
for a cushion to put under her head.

But before I put it under her head...

I put it over her face.

Which is understandable. She's been
making your life a misery for years.

Maybe it wasn't just Aidan.

Maybe they were in it together.
Mary was here all the time.

So, when Aidan went to get help, he left
Mary alone in the house with the mother.

Yeah.

But Mary didn't see fit
to mention any of this.

Sellers?

Mary? I'm Ruth.
I'm Aidan's girlfriend.

Oh, hi.

Can I speak to you?

Anything? I reviewed the door to door
witness statements, and no matches.

Good work. Keep trying.
It's all set up and ready, Sarge.

Zailer. Get in here! I will, sir.
Please, excuse me one minute.

OK. So...23:03.

This is Jason leaving.

Can you slow it down?

Stop! Back a few frames there.

Zailer, what's going on?
It's the CCTV, sir.

From the pub,
the night Jason was killed.

Forward again slowly.

Freeze!

We need to find her.

Thanks.

Sorry for turning up like this.
That's OK.

I can't believe Aidan didn't
mention he had a sister.

That we haven't met before.
He's told me a lot about you.

Really?
Sugar? No, thanks.

Yes.

I'm sorry about your husband.

Thank you.

You know the... police
still think it was Aidan?

He told me. Is that what you think?
No.

No.

I wanted to ask you um...

Well, Aidan had...
said something about hurting you.

I'm just trying to make sense of it.
Aidan would never do anything to hurt me.

No. No, I didn't think so.

We've always
looked out for each other.

You know he has
his performance today?

Performance? Mm.
At his college. Didn't he tell you?

I expect he wanted to surprise me.
He knows how nervous I get on his behalf.

He's been practicing for weeks.

But... everything that's going on,
I don't think he'll manage it.

Are you going to watch him?
I'd like to be there to support him.

Don't think he wants
to see me right now.

I understand.

You're worried about whether or not
you can trust Aidan, aren't you, Ruth?

I do trust him.

That's not the
question, though, is it?

Sorry? The question is,
can Aidan trust you?

We don't know Mary killed him.

All we know is she and Jason
left the pub at the same time.

Yeah. And three hours later,
he's dead. OK.

We have her arriving
five minutes before he did.

She knew who he was,
she followed him, chatted him up.

There's no sign of forced entry at
the house, so she must've been let in.

Do you think he was chatting up some
random bird, or did she say who she was?

Maybe Aidan was there at
the house waiting for 'em.

He had access to a key. We have absolutely
no evidence putting Aidan at that house.

Don't get me wrong.
Aidan really thought he was in love.

He fell for you in a big way.
Yes, well, I fell for him too.

It was very - And so, of course, it was only
natural that I wondered what you were like,

what made you
so very special to him.

And so I came to look for you.

What? I saw you at the school.
I could see that you were very pretty.

You saw me at school? But Aidan's
not just interested in looks.

You were watching me. I wanted to know what you
were like as a person, a woman, a partner.

Oh, my God. And the man you'd married,
whether Jason was anything like Aidan.

Jason.
Funnily enough, I had this idea

that Jason might be more like me.
And he was, in a way.

You spoke to Jason?
I really felt for him.

The pain that he must've felt
when you walked out on him.

When the person that you've dedicated your
life to abandons you for someone else.

We got on well at first.

But then...

all evening, all he talked about was how
much he hated Aidan for stealing you.

He got drunker and drunker and...

he was showing me all these
photographs of you on the computer.

And he said that he
wanted to kill Aidan.

To kill him. My Aidan.

And he said that
you'd been around there

and you'd spent the
afternoon in bed with him.

You betrayed Aidan.
Good to meet you.

You stole Aidan away from me
and then you betrayed him.

I have to go now.

Goodbye, Ruth.

Anything?
No.

Mary?

Mary Trelease!

No sign of her.

Still warm. She's not long gone.

She's pretty fond of her brother.

Run a check on the car.

And call the hospital.
See if she's due at work today.

Come and look at this!

Mm.
Yeah.

Look at this one.

Bit more than
a brother sister relationship.

Yeah. I mean, they're not blood
relatives, but you're right. And look.

Two lonely kids, thrown together
into this new family.

With a violent, alcoholic mother
and a... absent father.

'He protected me,' she said.
Huh!

And in return, she worshipped him.

He's good-looking, talented. The only
person in the world she can trust.

There's no recent photos.
Maybe Aidan put an end to it.

And Mary couldn't let go.

Ruth comes on the scene,

Aidan falls head over heels.
Mary gets jealous.

Yeah.

He didn't even mention...
Mary to Ruth.

She's been relegated to...
guilty secret.

But why would she go after Jason?

Yeah. If she's in love with Aidan,
she'd want to get rid of Ruth.

Maybe Jason was getting in the way
of Aidan's happiness. No.

Maybe... she'd do anything
to keep him happy. No.

She wants him for herself.

This is an obsession.

Yep. OK.

She's not at the hospital.
Didn't turn up for her shift.

Simon, that's Ruth's car.

Charlie? Blood.

Shit!

Shit, shit, shit!

Pick up, Ruth!

Come on. Pick it up!
Mary'll be with Aidan. Let's go!

Stairs!

There she is.

Mary! Mary!

Mary, wait!

Mary! Where's Ruth?

What have you done with her?

What are you talking about?
What's happened to Ruth?

I don't know.
Mary's never met Ruth.

You're covering for her again.
That's not true.

Just like when she
killed your stepmother. No, it...

It was my fault. It was an accident.

I pushed her away and she fell.

We know she was smothered.
Did you smother her?

What? No! When you went for help,
she was still alive. Think about it!

I think so.

Tell him what happened when you were
alone with your mother, Mary.

I didn't kill her.

What about Jason?
How did you kill him?

You were with him the night
he was murdered, weren't you?

No!
We have you on camera.

Your DNA and fingerprints are all over
that house, aren't they? Am I right?

Mary. What have you done?

He said he was gonna kill you.
I was trying to protect you.

Oh, my God! Is that why you killed
your mother? To protect Aidan?

Mary, no!
Well, she... she hated you!

You let me think it was me!
Why didn't you tell me?!

I just thought you wouldn't love me.

We're not kids any more, Mary.
You know I can't love you like that.

We know you saw Ruth today.

We found her car.

She's bleeding, isn't she?

Mary.
Have you done something to Ruth?

Please help us.
Just tell us where we can find her.

Have you hurt her?!
Charlie!

Ow!

Mary!
Mary, where's Ruth?

Please!
Please tell me where Ruth is.

Did you bring her with you?
Is she here?

Is she still alive?

- I love you.
- Mary! No, Mary!

No.

Ruth.
We need to find her keys.

Urgent assistance required.

Ruth!

Ruth!

Where's your phone?
Left pocket.

Ruth!

Ruth!
Shhh!

I can hear it.

I can hear it. This way.

It's somewhere here.

It's this one.

Ruth!
She's alive.

Ruth, if you can hear me,
squeeze my hand.

I need an ambulance immediately.

The ambulance is coming.
Stay with me.

Stay with me.
You're gonna be all right.

You're gonna be all right.

You're gonna be all right. Stay
with me. Don't go. Don't leave me.

On the left.

I'm here, Ruth.

They reckon Ruth's gonna be OK.

How did you get that coffee?

I know the right people.

Thanks.

We make a pretty good team.

Yeah, well. You know what
happens in Vegas stays in Vegas.

What?

Last night.

I was talking about... this.

The job.

No. Yeah. Course. Yeah.

Are you bleeding?

Let's get you to Casualty.
No, it's fine.

I've gotta sort out this
mess with City Police.

Can you wrap up here?
Yeah. No problem.