Silent Witness

Jay Selwyn, been in here nine years.

Victim's cellmate's keen to give a DNA sample.

What's the name? Scott Weston.

It's been ten years.

He went on a killing spree right here at the university.

Harry and I got caught up in it.

It's not enough to put him in the frame for murder.

And Jay died of hypothermia.

Jay had a significant amount of DNA on his clothes.

It isn't a match for any inmates.

Jay started having a panic attack.

Lewis was sending someone to kill him, so I hit him.

I will fight to my last breath to keep him behind bars.

Even though he's your son?

Scott didn't kill him.

Well, no, not necessarily.

What did you say to them? You're a liar!

I've got something to show you.

If Scott knew that Jay had an allergy, he could have... Just stop.

Can't you see what you're doing?

You're allowing yourself to lead the evidence

where you want it to go?

# Testator silens

# Costestes e spiritu

# Silencium

# Testator silens. #

That's where the most damage is, suggests maybe a little burning

package put through the letterbox by local... Vigilantes.

Likely using an accelerant such as petrol or lighter fluid,

judging by the speed of the spread.

If you look at the damage here,

these have melted toward the left, that can indicate the direction

the fire was spreading, in this case, away from the door.

And just looking up the stairs...

Yeah, the high V-shaped smoke pattern on the wall suggests

the fire climbed higher toward the upstairs landing.

We'll know more when I've looked at the full picture, you know. OK.

Nobody called the Fire Brigade

until the fire was quite established.

Too late by then.

Neighbours must have seen it. I mean, a fire this size

would have created a fair amount of smoke.

They didn't care.

Did vigilantes really do this to Scott's mother?

All right? Yeah.

Thoughts?

Well, usually in house fires, the victims die of smoke inhalation

before the fire itself ever reaches them.

But I'll know more when I do the postmortem.

If you do the postmortem.

I'm sorry to be the bearer of bad news, Scott.

I know your relationship with your mother was a difficult one.

You do understand what I'm saying to you, don't you, Scott?

Your mother has...

..passed away.

Yes, yes, yes, regardless of which, you should have told me

you knew Scott Weston and that you were a witness at his trial.

It wasn't relevant, we were investigating the death

of Jay Selwyn.

You should have told me as soon as Weston became implicated.

I presented the evidence as I interpreted it.

That's my job.

You are supposed to give impartial opinions.

The emphasis on Jay's injuries causing his death, accusing

Scott Weston of his murder, you jumped the gun.

It was a reasonable conclusion that any pathologist might have made

at that time, given the evidence.

You're not any pathologist, you were a key witness at his trial.

We should be concentrating on Pamela's death now.

She knew that her son...

Weston was in custody for the entire time.

You're not pinning this one on him.

It's not all about Scott Weston.

I'm really trying to give you the benefit of the doubt.

Look, I know you've had a tough year here and I know you're stretched,

but I've raised my concerns with the coroner.

I won't allow anything to compromise my investigation.

Do you understand?

That went well.

How dare you talk about me behind my back?

Excuse me? You're the one who didn't disclose your connection

to the suspect.

You had no right to tell him.

I told you those things in confidence, Jack.

I won't make the same mistake again.

All right.

Well, thank you for that.

If you're in a mess, it's not because of me.

There are full-thickness burns covering the majority

of the body's surface.

The body has a pugilistic attitude

due to the flexor muscles and tendons

contracting due to the intense heat.

Debris collected from under the one remaining fingernail

on her right hand, little finger.

I'll bag and label it for testing,

in case it's relevant.

Hello there.

There are definite bilateral fractures of the thyroid horns.

It appears that an appreciable amount of force has been applied

to the neck to cause fractures on both sides of the larynx.

Histology should confirm the presence of haemorrhage.

Levels of fire damage, smoke patterning and so on allows us

to create a reconstruction and watch how the fire spreads.

So, fire slows down significantly at this point,

through lack of combustibles. Doesn't go

over this side of the house at all.

But Pamela's bedroom was burned out.

Yes, this blaze had two seats

set alight in two places, once in Pamela's bedroom,

to hide the evidence, I suspect,

and once by the front door, to make it look like arson.

But the two fires never met. Right.

Well, look at this.

We lifted the CCTV on the bus stop on Pamela's street.

Look who was in the vicinity on the night she died.

Ah, Scott Weston's girlfriend. Yep.

She came back to the crime scene the next day too, you know.

I have a photo of her.

Well, let's bring her in, and search her place.

So, Paisley, why did you go to Pamela Weston's house?

Scott wanted me to talk to his mum.

We're getting married.

He wanted her to know.

Funny thing about arsonists,

they often return to the scene of the crime

to admire their handiwork.

That's nothing to do with me.

I wouldn't do anything to hurt Scott.

Enough here to set a house on fire.

The trachea is clear of soot and a healthy colour,

suggesting that no smoke was inhaled.

before the fire started.

Apparently, Pamela Weston was receiving some quite nasty emails,

death threats even, someone using the email

Bonnie1984 - "Leave or I'll slit your throat."

That wasn't me.

Were you hoping to scare her enough that she might just pack up

and move away?

Scott wanted her around.

Now, that's not what you wanted, though, was it?

You wanted her out of your lives.

She had no maternal instinct whatsoever.

She was determined to ruin Scott's appeal.

Is that why you killed her?

You OK?

Anything you want run past me?

Well, we know from the CCTV footage that this is what Paisley

was wearing the night Pamela died.

but there's nothing, nothing.

This is the exact same material she was wearing on the night.

There's an instantaneous flash of heat in any

accelerant-initiated fire, right, like ours?

And that would cause the end of the synthetic fibres to hook over.

Uh-huh. And it would have placed her

at the fire at the point of initiation.

I can't find anything.

given the degree of thermal damage from the fire.

But I'm satisfied that she was dead before the fire was started.

So, she was murdered, then.

We can be sure about that.

There was no forced entry into the house,

windows and doors locked.

So she let her assailant in willingly.

Anything that might indicate who that could have been?

Can we place Paisley Robertson inside the house?

Not yet.

Paisley had motive, she had form.

What have we got to place someone inside the house?

Pamela had a broken nail.

So it's possible that she tried to fight her attacker off.

I've collected material from under her fingernails,

just to check.

Ill take a look, see if there's any DNA present.

That one's a weakling right there.

They're all weak.

Tomorrow?

Yeah.

What are you doing?

Managed to lift some footage from Pamela Weston's dash cam.

Well, that's Pamela, but who are they, anything to identify them?

I think they're the parents of Scott's victims.

With all the interest in his potential appeal,

maybe they got together and took things further.

Could this be another group who didn't want Pamela around?

OK, thanks, I'll follow this up.

Anything more on Jay's case?

No, nothing since the anaphylaxis discovery.

Are we any closer to working out what caused the allergic reaction?

I need to do some more tests, but it's difficult.

There's nothing in his notes.

Allergies can happen at any age.

Could be a new thing.

Something he ate, maybe? What was in the stomach contents?

Fish, fruit, nuts and seeds.

Didn't the inmates have shepherd's pie that day?

So where did Jay get his food?

He was off grid for the whole lunch hour, remember?

Yeah.

If it was a nut allergy that killed him,