Original subtitles

This programme contains some strong language

and scenes which some viewers may find upsetting from the start

In Birmingham, West Midlands Police are dispatched to an address

after a man called 999, claiming to have killed a woman.

Crime scene coordinator Jo Ward is leading the forensic investigation.

23 years in a job, the feelings are the same.

It doesn't get any easier.

I'm still nervous, as I'm getting my white suit on.

There's always kind of apprehension.

Just the unknown, I suppose, of what I'm going to walk into.

Does she live on her own? No, it's an HMO. HMO.

So I believe there's four flats, effectively. Yeah.

It is quite unusual for a suspect to ring the police

and confess to a stabbing.

That doesn't alter the way we carry out our scene examination.

You can't assume anything.

The suspect could change his story.

There might have been other people involved.

You have to process that scene and the forensic evidence

can either disprove or prove his account.

Right. Ready? Yeah.

Half a mile away from the scene, officers arrive to arrest the man

who confessed to the stabbing in the call.

Step out, step out, on the floor! Step out onto the floor, do it now!

Hands behind your back! Hands behind your back.

Drop it out your hand, drop it out your hand.

The suspect is 27-year-old Pablo Hoad.

Priority message - we've made it to Whitmore Road,

we've got the offender in cuffs.

Right, what's this on your hand?

OK. Have you got any other injuries I need to be aware of?

OK, right, are you going to be able to sit up?

The suspect's phone is ceased and he is taken into custody.

Knees up. Yeah. OK, take a seat in there, mate.

At the crime scene,

Jo and investigators carry out an initial assessment,

while the victim's body is still in the flat.

Christ Almighty!

It's absolutely saturated, isn't it, here? Yeah.

You've got blood spatter everywhere.

The scene is quite shocking.

There's a lot of blood on the walls, on the doors, on the flooring.

She'd obviously received some substantial injuries

to cause that blood loss.

The victim is 27-year-old Shannon Stanley.

She'd obviously been lying on that pillow. Yeah.

Good grief!

It is tragic.

There's a young woman that's had their life taken away.

You do have to, within scenes, kind of relive the last moments

of their life, cos obviously you're trying to put together

what's actually happened.

One of the officers outside said something about her being found

and moved.

And, obviously, you've got the contact marks, haven't you, on the walls?

And then we've got obviously the spray as well, haven't you?

On both doors, isn't it, either side? Yeah.

So, obviously, something's happened here.

Blood spatter in several different rooms in the flat

makes it unclear where the attack took place.

So, obviously, she's been placed here after.

Yeah.

I can't see the blood loss just coming from that one injury to her forehead.

It's got to have hit an artery, hasn't it?

With the amount of blood in there, it's quite unusual.

But it gives me quite a lot of evidence to process.

Smell the cannabis in here. Can you smell it? Yes. Yeah, yeah.

There's a lot of drink and beer as well. Cheers.

There's evidence of a gathering of people,

all having a drink within the living room.

Potentially, there might have been a witness to this offence.

We've got to find out who was at the party.

Yeah. Was there kind of any arguments?

What's the reason for this?

There might have been other people within the scene

at the time of the offence,

people who live at that address.

We can identify witnesses at that scene via DNA

and fingerprints of those items, if they don't come forward.

Stand up.

You do not have to say anything, but it may harm your defence

if you do not mention when questioned something you later rely on in court.

Anything you do say may be given in evidence, all right, yeah?

The suspect, Pablo, is brought into custody to be processed.

He's aggravated a bit of a hand injury and it's started to actively bleed.

We've sort of bandaged it up as best we can. Right.

Might need a nurse just to come and have a look at it.

He is given medical attention for the wound on his hand,

which he claims to have suffered during the fatal stabbing.

Pablo's clothes, fingerprints and DNA are taken as evidence.

And his phone is sent to digital forensics for analysis.

So, Operation Drilidae, which is a beetle, I'm told.

The case is being investigated by Detective Inspector Jim Mahon

and his homicide team.

Suspect in custody is Pablo Hoad.

He called in to admit killing the deceased

and he stated the murder weapon was a knife.

The premises was accessed via a door at the back,

and you go straight up the stairs and there's four separate bedrooms,

all with coded locks on the door.

As a murder detective, you have to be questioning.

You've got to not assume anything.

Just cos someone's confessed to killing somebody

doesn't mean that we can just go home.

He might be lying, or he might change his story, or could be

covering up for somebody else.

We can't just solely rely on that confession alone.

The victim, Shannon, and the suspect, Pablo,

rented separate rooms in the property.

The deceased was found in the bedroom, but they took her out to do

the first aid in the lounge because there was space on the floor.

It is an absolute bloodbath.

There's sprays of blood everywhere, in pretty much every room,

other than rooms one and two.

Aims and objectives, then - number one, we need to try

and keep this suspect detained. We need to locate witnesses.

Secure and preserve evidence through forensic searches.

We need to find the knife, principally,

and to arrange a forensic postmortem.

We need to locate a next of kin. Right, thank you all.

Somebody has been killed.

We need to establish exactly how,

what their cause of death was,

what the motivations and the reasonings are behind it.

It's really important that we question the suspect straight away

because they can lead us to forensic evidence

to convict them of that crime.

Detectives take Pablo in for questioning.

If you want to take a seat there for me.

So, we're here today to talk about a murder.

Of course.

Pablo is claiming that he acted in self-defence.

In layman's terms, if someone attacks you,

you are allowed to protect yourself from harm.

You're not criminally responsible for that death.

So, this just changes the whole nature of the investigation.

Ultimately, Shannon's been killed, so we need forensics to establish -

was his life under threat from Shannon?

Pablo could be a murderer,

but if it's deemed that he acted in defence of himself,

then he could walk free.

So, the stakes are really high.

With the suspect claiming he acted in self-defence,

specialist crime scene investigator Julie Slater joins Jo at the scene

to help gather crucial evidence from the victim's body.

Pablo has confessed to this offence, so if we find his footprint,

or we find his fingerprints,

that doesn't prove or disprove his account

because he's already put himself at the scene.

So, it does make it more difficult, with regards to forensic evidence.

With self-defence, there's always a question of what force is

necessary to deter someone.

Was it proportionate?

Pablo's account is that she come at him with the knife

and he's had no alternative to get her off.

That could be a possibility.

This is what we need to identify.

There's that injury to the left side of her forehead. Yeah.

Looks like it could be quite deep, possibly quite deep. Yeah.

It's quite long, isn't it? Yes, long and linear. Yeah.

I can't see the blood loss just coming from that one injury to her forehead. Yeah.

The body in a murder investigation is a scene.

We class it as a scene as well

because we can gather forensic evidence from Shannon's body.

Well, let's hope so.

That would be great, wouldn't it, if she has? Yeah.

I always say that we're actually speaking for the victims,

because they can't speak for themselves.

On her left hand there... There's a potential defence injury.

Yeah. Certainly quite a nasty... Like she kind of put her hand up.

Looks like it's kind of gone through.

It's gone between the fingers. Possibly, yeah. Yeah.

Gone quite deep. Yeah.

Yeah, it goes through.

On Shannon's left hand, I can see quite a significant injury,

possibly a defence injury.

Did he need to use that much force?

Does that fit in, really, with his account of self-defence?

Photographs of Shannon's injuries, DNA and clothing,

including a blood-stained jacket, are collected and sent for analysis.

It's like a puffer jacket, yeah.

She's got injuries to her head,

so she was obviously wearing that at the time.

This appears to be the only cutlery drawer. Yeah.

And there is a lack, in general, of sharp knives, isn't there? Yes, yeah.

Where have all the knives gone?

We can't actually find any weapon within that scene,

but interestingly enough,

there's not actually any knives within the knife drawer.

You'd at least have one or two sharp knives, normally, within a kitchen,

so it is quite unusual.

There's obviously been a knife that's been used

to commit the injuries to Shannon and it's no longer in the scene.

Detectives start to review footage from nearby CCTV cameras

to track Shannon and Pablo's movements

and identify any potential witnesses they were with

in the hours leading up to the fatal stabbing.

CCTV makes or breaks a lot of our cases now.

People have CCTV and Ring doorbells,

restaurants and commercial venues have CCTV,

so even if the actual murder's not caught on CCTV,

you can piece together the events of that day.

So, all these are cameras...

Yeah. ..and you can see the route that they take.

So, you sort of tracked them when you saw them coming out? Yes. Yeah.

What we know is that there was a number of people within the house.

So, we then look at the CCTV in that area

to try and see who those people are, try and find who the witnesses are.

We're also just looking at people's behaviours throughout the day.

Are they getting along well? Are there signs of arguments?

Are there disagreements?

So they're coming from the direction of Mount Pleasant, up Coventry Road.

And then that's the victim there who's coming back from Morrisons.

They've got Morrisons carrier bags.

Cameras capture the victim walking with a flatmate,

just hours before the attack.

So, then this is back to Whitmore and this is Pablo and Waqar.

Police identify Pablo, along with a friend, Waqar Ali, on CCTV.

Waqar has already told police that he was not present

when Shannon was stabbed, but that Pablo turned up at his house

shortly before he was arrested.

And then this is much later on, going towards McDonald's.

And that's Pablo.

CCTV shows Pablo joining Shannon

and their flatmate less than two hours before he called 999.

That group seem to get on OK at this point.

Yeah.

And from what I can see from the cameras inside McDonald's,

they go to the toilet. They're all drinking in there.

Nothing happens between them. Between them.

It is strange watching the CCTV.

You know that at some point, the person stood next to Shannon

is going to... Going to kill her.

You can see on the CCTV that Pablo and Shannon,

they're both comfortable together. They're both friendly.

You're sort of then thinking, "What's the trigger point that

"set off that chain of events, which leads to Shannon being killed?"

The witness may potentially know.

The flatmate identified on CCTV on the evening of the stabbing

is brought in for questioning.

If she witnessed the fight,

she could confirm or disprove Pablo's story of self-defence.

LOUD BUZZING

The female witness provides us with an account where she supported

what Pablo's saying and paints Pablo in a very good light.

But she's not present when the events have taken place, so

we still only have Pablo's account of what happened in the room.

So, it's really important we try and find more forensic evidence

that could tell us what happened to Shannon.

The witness's confirmation that there were knives in the kitchen

of the flat prior to Shannon's death prompts police to widen their search

to the property where Pablo was arrested.

It's really important for any investigation

to try and locate the murder weapon.

The knife that's been used to commit the murder

will yield some forensic evidence.

In here? Yes.

The meat cleaver found in the sink appears to have been washed,

like he's attempted to remove forensic evidence.

Blood staining over it, handle and blade.

Blood stained.

I'm quite surprised that...

You know, I didn't realise we were going to find...

..five knives in total.

It's quite hard to understand

why Pablo's taken all those knives away from the scene.

Why has he hidden the knives?

There's an awful lot of questions that need answering.

We've done a search on the Whitmore Road address.

Our forensic team have found some knives in there.

So there's the grey and white. OK, there's two other knives.

What knife did you stab Shannon with?

No comment.

Is that the knife that you took off her earlier? No comment.

Can you describe that kitchen knife to me at all?

Can you describe that meat cleaver to me at all, mate?

OK.

Pablo, what's happened in the house?

Obviously, there's been some argument between you and Shannon.

There has.

So why did this argument start, mate?

I asked someone to leave the house. OK.

She didn't like that.

Then she started going...crazy like she usually does,

shouting and swearing.

And I told her, "Don't talk to me like that.

"I'm not your other mates that you talk shit to."

OK. So she picked up...

It sounds weird, she picked up my knife from the draining board.

OK.

She approached me with it, saying she was going to kill me...

..and stab me. So I grabbed the blade with this hand.

OK. And I put my thumb on top of the handle there

and I twisted it up and out of her hand.

I didn't know, like, what had actually happened to my hand.

I just knew that the knife has sliced into my fingers

while I was trying to get it off of her. OK.

And even then I didn't, I still weren't...

There was nothing, like, in my head that I was going to use that knife,

even after I took it off of her... OK.

..until she went to grab the meat cleaver.

So I stabbed her.

And then...

..she's still... Like, she's grabbing the meat cleaver

and trying to swing it.

I carried on stabbing her,

but I weren't thinking about, like, "I'm going to seriously hurt her."

And then, like, she's slouched over,

but she's still swinging the meat cleaver towards my legs.

So I'm, like, with my legs back, still trying to...

Just to get her to stop.

But then as soon as she dropped it, she said,

"I'm sorry, I'll stop it. Just let me go to my room."

I let her go, go to her room.

I collected all of the knives from the kitchen

and my plan was just to put them in my room,

so she didn't have no access to them.

So when she dropped the cleaver,

have you tried to give her any help at all?

No. If I'd known she was seriously hurt,

I wouldn't have even left the property.

I would have rang 999 the way I did when I knew she was seriously hurt.

I would have been still at the property,

trying to help her, cos that was never my aim.

And as soon as I knew, I rang and tried to get her help.

OK. OK.

I was just trying to... OK. ..protect myself.

That's all I was trying to do.

OK.

Self-defence, it's not a simple concept.

His response has to be reasonable, necessary and proportionate.

So if someone came to punch you,

you would be justified in pushing them away.

But if someone came at you with a gun,

then you might be justified in running them over in your car.

So you have to balance that level of threat with the response.

But to flee the scene with weapons and hide them

makes you question his account.

If he is lying, the lie's just got a lot bigger.

In an attempt to verify Pablo's account,

the recovered knives are examined.

There's just blood everywhere on that.

Looks pretty covered, doesn't it? Yep.

Pablo is saying that he's been attacked with a knife

and also the meat cleaver,

but we'd found five knives in total.

Have all of the knives been used on Shannon or just one in particular?

Is it proportionate with regards to him saying it was self-defence?

A further examination of those knives hopefully will ascertain

which one has been used.

First, they look at the grey-handled kitchen knife.

It does look quite fatty in places... Yeah.

.and quite greasy, which is a characteristic of a knife being used

as a stabbing implement.

When a knife penetrates a body, it goes through a layer of fat.

And when the knife is pulled out of the body,

it may leave traces of fat on the blade.

I'm after handler DNA as opposed to touch DNA,

so if someone's just touched it.

We're looking for someone that's actually used it.

We start by recovering any cellular material

to get a good handler DNA sample -

skin cells, for example, or sweat.

It's obviously invisible to the naked eye.

So much blood.

We then examine the knives under a microscope for blood.

Blood is a much richer source of DNA.

There's some ridge details as well.

It's kind of quite faint. Yeah.

Is there an indication that he's got an injury, did we say?

It says he's cut his hand. Yeah?

So that might indicate that it's been held with blood wet hands.

Samples are taken from all five knives,

including the meat cleaver,

to be compared to Pablo and Shannon's DNA profiles.

If both Shannon's blood and Pablo's DNA are found on the same knife,

it could identify which one killed Shannon and support Pablo's account.

TELEPHONE RINGS

Jo Ward, Crime Scene Coordinator.

Oh, hiya, Jo. It's Lucy from Eurofins.

I've got some results from you from the knives

in the Shannon Stanley case. Oh, OK, lovely.

So the meat cleaver,

we sampled the hilt, where the handle meets the blade...

Yeah.

..and that produced an apparent major DNA profile matching Shannon.

Given the knives were found within her address,

we expect some of her DNA to be on them. Yeah, yeah. OK.

And then we found blood on the grey-handled knife.

That's the larger one, wasn't it? Larger knife. Yeah. Yeah, yeah.

The blood on the blade gave a complete major DNA profile

matching Shannon.

And then the blood on the handle of that knife produced

a complete major DNA profile matching Pablo.

OK, that's interesting.

Pablo's account is that he's cut his hand

by pulling, obviously, the knife off Shannon.

So he's bleeding, isn't he? Yeah.

Obviously that injury would need to have been bleeding at the time

for that transfer to have occurred.

We've got a contact blood stain on one of the knives

which produced a major DNA profile matching the suspect himself.

That might be because he did have a bleeding injury,

which corresponds with what he's saying.

Could you say that that had possibly been used

as a weapon on Shannon at all?

My conclusions that I've drawn in relation to all of the knives,

they're the same, to be honest.

We haven't seen any specific blood patterns on them

that might suggest any of the knives have been used as a weapon.

It could be that they did exhibit some of the features,

but those features have been removed or altered

as a result of Pablo moving the knives to a different location

or washing them or anything like that.

While there's some evidence to support Pablo's claim

he was injured taking the knife from Shannon,

the tests do not conclusively say

if one or more weapons were used against her.

Hmm.

It's very frustrating from my point of view.

I was hoping for some evidence that would either prove

or disprove his account.

So the examination of the knives

really haven't took us any further forward.

In digital forensics, Pablo's phone is examined by a data specialist

to track its usage on the day of the killing.

I think the average person would be quite surprised with how much

is recorded and kept on the device -

messages, calls, contacts, web history.

We can extract data...

..and images and videos which have previously been deleted

from applications which sell themselves on removing data -

ie, Snapchat.

When we extract a person's device,

we can uncover their deepest and darkest secrets...

..even though you think they're deleted.

There's a lot going on, isn't there? Yeah.

While data is extracted from the phone,

Jo calls in blood pattern analysists

to interrogate the sequence of events Pablo described.

They start in the kitchen, where Pablo claims to have stabbed Shannon

before leaving unaware that she was fatally injured.

I've been going to scenes for probably 22, 23 years now,

and this is the most blood I think I've seen in one property.

Very fine spatter. Very fine. Extremely. Yeah.

So how's it got all the way over there?

That's kind of that sort of...

They're all going downs, aren't they? Yeah. Yeah.

By looking at all the blood patterns,

we can reconstruct what's taken place at the scene.

We can say where the victim sustained their injuries,

how ferocious was the incident.

It's about looking at the distribution of blood

and what does it tell us?

We've got blood runs here that have run over the two drawers.

We're looking at the size of the stains,

the actual shapes of the individual stains as well.

We can tell which direction they've travelled

before they've hit the surface.

We've got this spatters low down on the skirting.

Those drips are quite heavy, aren't they? Yeah.

These are actually spatters of blood which have landed on the doors

and they've run down, so it's a relatively large volume of blood.

Quite strong indication it started in the kitchen,

mainly based on the widespread distribution

and variety of blood patterns present.

OK, so you've got some kind of event happening.

Blood's being spattered in here and the door's closed.

And it's maybe continued into the other room.

It's like a trail, isn't it? Isn't it?

Blood is also present in the corridor leading to the bedrooms,

where the team make a significant discovery.

There's bubbles in some of these. Look.

Oh, there are. Yeah, big ones.

It's very likely that the victim was bleeding from an arterial injury,

which are indication of quite a forceful breach of arteries.

You can sometimes see arterial injuries whereby the blood

is spurted quite high.

I've seen arterial injuries maybe eight feet high on the wall.

It's just covered in blood.

When Pablo initially spoke to the police,

he said he didn't call 999

because he thought Shannon was OK when he left.

The blood patterning tells a completely different story.

It suggests that there was blood spraying out.

Most people aren't going to think that that's not a serious injury

that requires medical help.

I just thought I'd go through these postmortem results. Yes.

To confirm whether Shannon sustained an arterial injury,

as the blood at the scene suggests,

Jo goes through the postmortem report with Jim.

So she's got at least, possibly 12, sharp force injuries

according to the postmortem.

The number of stab wounds that someone's got

is really key to self-defence.

If you're saying you're under attack

and you're having to stab someone to protect yourself,

Shannon's got multiple injuries and Pablo's got an injury to his hand,

so to inflict so many injuries in self-defence

seems less and less plausible.

She's got quite deep wounds to the left side of her forehead.

So she's got one here. Yeah.

But obviously the most significant is this one here,

which is just kind of behind her ear,

and that's the one that has caused her death

cos it's gone through some major vessels.

She's also got kind of defence injuries in her left hand,

and it was kind of in this area here.

And that had actually gone right the way through.

So it's obviously taken quite a lot of force to... Yes.

You know, for that to go through.

So whether, you know, in defence, whether she's kind of, you know,

trying to protect her head or her face

and she's done that and he's kind of...

Pablo is left-handed,

so you would expect that Shannon, if they were facing each other,

would have injuries to her right side.

If he's left-handed... Yeah.

..and you've gone at me with a knife

and his wound on his hand...

..is protecting the knife, takes it off her... Yeah.

..and then attacks,

you would expect the injuries to be on the...

To the right. ..more to the left. To your right. Yeah.

But obviously the main one, obviously quite significant one,

is...to the left, isn't it? Yes.

So it's interesting. You know, what position was Shannon in?

Yeah. Was she kind of facing away, or...

Yeah, so he's done it from behind. Behind, yeah.

If you kill somebody when their back's turned to you,

or you're attacking them while they're trying to protect themselves,

are they that much of a threat?

We've got quite a lot of forensic evidence

of Pablo not telling us the truth,

but that's not enough to convict somebody.

We have to prove it beyond responsible doubt to a jury.

We still don't have anything that's concrete

that says it wasn't self-defence.

Quite heavily blood-stained, that is.

With the postmortem revealing that Shannon suffered

a considerable number of injuries,

Jo examines her coat - recovered from the crime scene -

to assess the level of violence used by Pablo.

These are almost like child sizes, aren't they?

It's quite petite. Yeah.

Shannon's approximately five foot four in height

and I'd say probably about six and a half, seven stone in weight.

What level of force is necessary to deter someone

so small and so petite as Shannon?

Can you just check, is there any...?

Cos obviously she was stabbed to the left side of her neck.

That's that side, isn't it? Yeah.

From the postmortem, we can see you know the injuries

that she's got to her body corresponds to

the damage to the jacket.

Obviously these two, we know that she's got three injuries to her head

and, yeah, back of the head.

And both of these have both gone through. Yeah.

That suggests to me that she's had her hood on.

Had it up, yeah.

I'm just thinking, has that damage actually gone all the way through?

So it's just gone through to the jacket,

so it's not made contact with her skin.

We've got what looks like damage caused by a knife.

So if we turn the jacket over, we can see it's not gone through,

so it wouldn't have made contact with the skin.

It's obviously just gone so far into the jacket

and then not come out the other side.

And she had no injuries to her chest or abdomen on the postmortem.

This is quite interesting,

similar to the one on the front of the jacket.

Obviously this is to the right sleeve of the jacket,

but there's no reported stab wound to the right side of her arm.

And the inside, the filling of the coat is still white,

so it would indicate fresh damage.

So it would obviously mean as he's been stabbing,

he's obviously tried to stab her more times

than what we've seen from the postmortem results.

The amount of times that Shannon's been stabbed,

it's obviously a prolonged kind of,

I suppose, quite frenzied attack.

Pablo is claiming self-defence.

It's quite hard to understand how in self-defence

that she's received so many injuries.

Jo also reviews photographs of Pablo's clothing -

recovered after his arrest -

for signs he was attacked by Shannon in the way that he described.

Looking at the jacket, there's actual damage marks.

There's five areas of damage.

The two at the top here have possibly been caused by

a cigarette burn or something like that.

But these three here definitely are consistent

with being caused by a sharp instrument.

I'm just looking at the white vest top.

There's three areas, indicated by the arrows there...

..which show damage marks.

So they've gone right the way through the top.

And they're all consistent with being caused by a sharp instrument.

He said he's been attacked by Shannon,

but he's not actually mentioned in his interview that the knife

has made contact and caused any damage to his clothing.

Why?

It certainly raises questions.

With forensic evidence suggesting Pablo may be lying,

investigator Andy Hiles analyses data

extracted from his phone from the night of the attack.

So this is a period that I'm particularly interested in -

before the murder took place at 00:34.

So I just want to have a quick look at the chat that he's had.

So here I can see that there's Snapchat messages.

I've got part of the message in the description -

"Not really, but will be. These tried stab me.

"Got my hand sliced open."

But the question is, what's the context of that?

So I'm able to now look and see if there's any audio or any video

that marries up in the time.

I have got one here that's seconds before that message is sent.

The mobile number that the voice message is sent to

belongs to Pablo's friend, Waqar Ali.

It gives me the time stamp from the handset,

so I can see here that the timing of that message sits before our murder.

So you've got an account which says that the injury

occurred during the assault while he's talking about an injury

to his hand before that assault has taken place...

..which would then suggest that that isn't the case at all.

He hasn't sustained that during the attack,

he's in fact sustained this earlier.

And he's also talking about having a knife with him

during the course of that attack.

Pablo, let's get this done, then. OK?

This is a big breakthrough.

Pablo says he's been attacked by a man with knives

and that they've actually sliced up his hand.

Whether that's to do with gangs or for some other reason,

we don't know.

But that suggests at least that he's lied about

how he's got his hand injury.

Also, that message to Waqar explains why he's got the stab wounds

to his clothing.

Detectives bring Pablo back in for interview

to put the new evidence to him.

At this interview, our plan is to present new information

that we've found that might contradict what he's told us

and start to say, "This isn't adding up...

"..and this is your chance now to tell us the truth."

Pablo hasn't really acknowledged any of the evidence.

He said he doesn't want to talk about the earlier altercation.

He's received injuries, he's been attacked.

You know, he must be quite worked up.

It's a possibility that his state of mind's led to him

being a lot more brutal in his attack of Shannon.

PABLO SNIFFS

At this point, I'm starting to think Shannon never had a knife at all.

Has he just killed her and has fabricated a whole web of lies,

portraying her to be violent to try and justify

every injury, every movement?

You know, there's a real possibility now

that he's just killed her in cold blood.

In light of new evidence that Pablo was attacked earlier in the day,

detectives review further CCTV cameras from the surrounding area...

..and make an unexpected discovery.

This is the walk there, is it? This is the walk there, yes.

Filmed shortly before the attack,

it shows Pablo en route to the scene with his friend Waqar,

who told police he was not present when Shannon was stabbed.

So 23:23, he's crossing... That's him crossing towards. ..and then...

And they do a fist bump - there.

And then this is them leaving.

That's them coming back after she's dead.

Post-murder? Yes.

Another camera reveals Waqar and Pablo walking away from the flat,

moments after the attack has taken place.

You can see some dark marks on the shoulders of his tracksuit,

a white...normal area, but there's some dark marks.

They walk until they get a bit further into Camelot Way.

Then they run.

So it's very different to Waqar's statement.

Waqar says that Pablo turns up to his house,

having phoned him saying he'd done something terrible,

and that Waqar didn't leave. But obviously that's not correct.

So...

..clearly people are lying. Yeah.

We've got Waqar, who's potentially someone who's present in that room.

So Waqar's going to know exactly what's happened.

He could give us an account,

which will really help all that supporting evidence that we've got.

With evidence Pablo's friend Waqar Ali was lying,

police arrest him and bring him into custody for questioning.

The offence? Assisting an offender in relation to a murder.

It's the high five moment.

That's a really, really good moment because we've got

the scientific forensic evidence that supports what Waqar's saying -

the amount of blood at the scene

and the number of injuries to Shannon,

and he's lied about his hand injury.

OK, mate? I need you to come and speak to the sergeant, come on.

Pablo's story of self-defence is now in tatters.

It just does not hold any weight any more.

Now, a charge has been authorised for murder.

It's a very serious offence.

Murder, I don't think it can really get much more serious than that.

So the next question I always get asked is, will I grant bail?

No. I cannot grant bail for murder.

You're going to be remanded, so you're going to stay here

and you're going to be taken to court tomorrow morning.

We will try to contact your mum.

A3, please.

Thank you very much.

The most compelling piece of evidence in this investigation

is the amount of injuries that she's received and at what force...

..and certainly adding into that

the defence injury that she's got to her hand.

It's quite hard to conceive how it was self-defence.

You feel an enormous responsibility,

for Shannon's family and for Shannon.

Pablo tried to paint a picture of self-defence

to get out of going to prison for a long time.

But there's a wealth of scientific evidence and witnesses

that disprove his account and show that he's lied throughout.