Original subtitles

A court has been hearing how a man murdered a couple,

dismembered their bodies,

and then, froze some of their remains

before taking the rest in suitcases

to the Clifton Suspension Bridge in Bristol.

...Suspension Bridge in Bristol.

It's a very unusual case.

The high profile nature of it, all the background of it.

It's certainly the outlier in my career.

Just like to pass my condolences to the family and friends

and loved ones of Albert and Paul,

who were brutally murdered, um... in their own home.

For me, the main part of my role...

is bringing justice for Albert and Paul.

They didn't have much family

or friends in the... in the press, fighting their corner.

And they should be...

front and centre of the whole process.

But with everything else that was going on with this case,

a lot of the focus shifted onto...

onto Mosquera and the more sensational elements of the case.

Yostin Mosquera had deposited two suitcases

with dismembered bodies on the bridge.

But that was only half the story,

and the other half still needed to be told.

There were still a lot of unknowns.

We had no idea what the motive for the murders was.

Why had he done what he'd done?

Everything was pointing to the fact that he was responsible,

but we still had to prove all of this...

...in a court of law.

The first day in the court...

...all the media were there, you know?

The press benches were packed.

There were so many of us there,

because you are desperate

to see this person.

Throughout the court proceedings,

Mosquera remained very quiet,

very calm and composed.

He didn't seem particularly fazed by anything

that was happening in the proceedings.

He seemed like an average bloke.

He did not look like someone

who's, uh...

who's been accused of killing two people,

dismembering their bodies, putting them in the suitcase,

and leaving them on a bridge.

He just didn't seem the sort.

It was really hard to marry up the person

you were seeing in front of you

with the person who dismembered the bodies

of Albert Alfonso and Paul Longworth.

But we learned straightaway

that the police had...

the entire murder of...

Albert Alfonso on camera.

It's not unusual to, um...

to have murders caught on CCTV or caught on camera these days,

but to have cameras specifically set up...

...in a room,

then go on to capture the murder...

...it... yeah...

that was a big shock for us.

Evidentially, that's brilliant evidence for us.

But this was...

...really close up...

...cinema-quality footage, and...

...was a... a really horrendous thing to watch.

And probably the worst thing I've seen in... in my career so far.

The judge really made a point

of warning the court

that the footage they were about to be shown...

would be so distressing.

And so, you knew it was gonna be really bad.

I chose not to watch it.

The jury didn't have that luxury. They had to watch it.

The video starts with Albert and Mosquera having sex.

And then, we see Mosquera pull the knife to commit the murder.

Albert obviously, um... realises what's happening.

He managed to overpower Mosquera for quite a few seconds,

then, Mosquera takes back control and stabs him repeatedly.

A couple of things struck me, is how quickly it happened,

but also how brutal the attack was.

It's one of those videos, you watch it, and it never really leaves you.

I think the thing that made this even worse was

the sound that went with it.

The quality of the audio, that close up...

...really did add a...

add another element of trauma to the... to the video.

The noise of Albert dying is

something that will stay with me forever.

It was really...

...just so horrendous.

On the face of it,

it was a very clear set of circumstances.

We had the murder of Albert on video,

and that was evidentially really helpful.

But we didn't know the circumstances,

we didn't know why.

Had something else happened beforehand?

It was later on that his defence came about.

Mosquera's defence was

that he was being dominated by Albert.

Mosquera actually said that Albert had killed Paul,

and that was the reason that he'd then killed Albert.

Yostin says Albert was threatening him.

Albert wouldn't let him go home...

and that he couldn't escape.

He couldn't go back if he wanted to.

He was being taken advantage of.

He was being abused.

And he snapped,

and that's why he did what he did.

So, the next big question for me was,

"Was there any validity in Mosquera's claims?"

A man will appear in court later,

charged with murdering two men

whose remains were found in suitcases in Bristol.

Mr Mosquera is charged with double murder,

which he denies.

But he has admitted to manslaughter.

When the defence started...

...I was shocked.

Yostin Mosquera was saying

that he was freeing himself

from an abusive relationship.

That he'd basically suffered

years of abuse...

and that's why he did what he did.

And I just thought,

"It's not gonna be that easy for the jury.

They're not suddenly just gonna go,

'Yostin Mosquera, you are indeed guilty'."

In all our murder investigations,

we look at who the suspect was

and who the victims were.

And going through the digital media devices we'd seized,

we started to build a picture of...

Albert's lifestyle.

And we'd identified that Albert had

a particularly high sexual appetite.

He liked being dominated by Black men...

...and was engaged in posting

sexual content online in specific...

...niche areas of, um... sexual interest.

And we then established

that that's how he'd originally met Mosquera.

For me as a cyberpsychologist...

the whole case altogether...

tells us a lot about paraphilic behaviours.

Those are, um... sexual interests

in non-normative sexual pleasure.

In this particular case,

we know that Albert had interests in,

in vomiting, urination, faeces et cetera.

Very uncommon sexual interests, very niche,

which is what he found online.

Mosquera was, uh... financially, uh... in need,

and for that reason, he was engaging in... in those sexual acts.

And so, that relationship started

in a way that you can, uh... perhaps claim

that there was a predatory element.

The Internet allowed Albert to build a relationship

with somebody who was potentially very vulnerable.

Engaging in BDSM itself isn't

necessarily, uh... problematic,

isn't necessarily illegal.

But what happens online is

that we're significantly more likely to be disinhibited.

So we're more likely to be aggressive,

and we're more likely to be violent.

Part of Mosquera's defence was

that Albert was grooming him over a period of years...

...that he forced him to engage in sexual activity...

...paid him for it.

But at the same time,

there was a relationship that started online

and progressed into an offline relationship.

So, whatever they were doing online was then transferred into the...

the real world, with certain consequences.

As we learned more about...

the relationship between Albert and Mosquera,

it was really important for me that the team kept an open mind about

how the power balance was between them.

Albert initially met Mosquera

on online chat rooms.

Albert would request videos from Mosquera

and would then pay him for those videos, and it...

it began on quite a transactional basis.

After a number of years,

it developed to a point where Albert travelled over to Columbia...

...and arranged to meet Mosquera.

That happened two or three times.

Throughout those periods, they would continue to exchange videos.

And then, Mosquera travelled to the UK,

stayed with Albert and Paul in Shepherd's Bush,

and engaged in sexual activity with Albert.

Mosquera provided his defence

that he had been coerced and controlled,

and, effectively, trafficked over to the UK.

Albert, on the face of it,

had control over him financially.

And there was always a transactional element of the relationship,

even when he was living with him.

Albert would pay for everything,

but there was an expectation that he would get to have sex.

But we found no videos or recordings of...

of Paul engaging in sexual activity at all.

Albert and Paul were in a loving marriage.

But the sexual element didn't form part of their marriage, and...

it appeared that Paul was quite happy that Albert...

fulfilled that part of his wants and desires elsewhere.

It very much seemed it was an open relationship.

Paul being aware of Albert's...

activities-slash-desires.

But bottom line is,

by extension, he welcomed Yostin Mosquera.

Albert was paying Mosquera.

And Mosquera would

make videos... for Albert,

and he was posting these videos online

on extreme pornographic websites.

Initially, you might vilify the perpetrator

and have sympathy with the victim.

But there is always a dynamic going on.

And we can't really look at this case

without understanding what Mosquera's grown up in.

We learned in the court case

that Mosquera himself had been

highly likely traumatised as a child

by witnessing the murder of two other children.

And there was some suggestion

that he had been abused, sexually abused.

And that's something that's gonna be really key

to understanding Mosquera's behaviour.

Mosquera's defence was

that he had been brutalised by Albert,

that he'd been raped, that he was frightened.

That may be true.

It's difficult to know.

But, given what we know

about Mosquera's childhood,

it doesn't mean

that there weren't elements of his relationship with Albert

that he found very triggering and dangerous,

given his history of trauma.

Mosquera is someone who's...

...potentially chopped up people,

put them in a suitcase and left them on a bridge.

But was that triggered by something else?

Was that triggered by...

how... he felt he was treated?

We have a tendency to paint victims in the best and positive light.

And then, suddenly...

we had a curveball moment.

A protected witness came forward.

And this individual said, essentially,

that Albert had drugged and raped them.

I met Albert

when I was 17 or 18 while I was playing rugby.

One day, he asked me

if I wanted to come round for a drink,

and I said, "Yes."

I went to his house, I'd had three drinks,

and I don't remember anything that happened afterwards.

Would you normally pass out after three beers?

No.

And whilst you were passed out,

Albert Alfonso penetrated your anus with his penis,

and he also recorded that sexual activity on an electronic device?

Yes.

He said I had to keep having sex with him,

or he'd publish it.

He explained he specialises in sex videos and said,

"If you're available occasionally, I won't publish them,

but I will keep them."

I was very scared of them getting out.

As time went on,

you then became involved in sexual activity with him,

and you were paid money for these sessions.

Yes.

He said he wanted to keep it between us,

and he wanted to cover himself.

And he said, by paying me,

he wouldn't have to worry about anything.

But it wasn't about the money.

It was about the fear of the videos.

Does it cross your mind that you were groomed by Alfonso?

Yes.

And does it cross your mind, looking back,

that your drink may have been spiked?

Yes.

Does it cross your mind now, looking back,

that you were raped?

Now, yes.

It didn't...

shine a good light on Albert,

and I have a feeling that the jury might not be able

to convict for murder

because it provided Yostin Mosquera

with a defence that he was being abused.

And I said to my news editor

when I came back from hearing that testimony,

I said, "This isn't gonna be a clear cut."

Today, the court heard

how 62-year-old Albert Alfonso

and 71-year-old Paul Longworth

were in a civil partnership.

But Mr Alfonso also enjoyed extreme sex,

which he filmed and posted online.

I've read it quite avidly,

wanting to know all the details to try and understand.

I was just horrified.

Absolutely horrified.

And I said, "I had no idea."

It's almost as if it's not real to me.

It's... It's as if it's not real.

Yes, of course, I'm really angry with Albert.

I knew he sexually played around, or guessed he did.

And, obviously, whatever Paulie gave to Albert wasn't enough.

But Paulie, I'm sure there was nothing bad about him.

But how Paulie didn't have

a pretty clear idea of what was going on...

...and try and do something about it.

Everyone was talking about it in the pub.

Paul was complaining about this guy

that had come over from Colombia,

saying he was eating him out of house and home...

...costing him a lot of money.

And he wanted him out.

Nothing about...

any sexual relationships with Albert at all.

I couldn't believe it when Mosquera pleaded

that he didn't kill Paul; that was Albert.

And I thought, "No, that can't be true.

That would never happen."

Both of them, Paul and Albert, were...

...well, they were partners, you know?

Even if a row, it wouldn't lead to murder.

So... no.

That would never have happened.

Albert cared a lot for Paul.

Their relationship was always nice,

even stronger towards the end.

Paul was getting ill.

He was going back and forth to hospital,

and Albert was very worried.

Albert was very nice, thoughtful, caring.

He really looked after Paul.

He said, "I will always look after him."

By this point, I felt I was in control of the relationship.

I'd call Albert, and I would instigate it

if I needed the money.

And Yostin joined us when he was here.

Albert would say

what we'll do at the beginning of the sessions.

Then, Yostin would take control.

Yostin was very hard doing this.

He looked like he was really enjoying it, being in control.

But one time, he showed me a photo of his wife and child...

...and said he was only doing this for the money.

Yostin Mosquera's defence was, "I was a victim.

I was a prisoner here in the UK."

He came from Colombia where...

people can be exploited

for sex tourism.

So, the picture he painted...

could be plausible.

And when he gave his defence,

he was there, he was engaged,

he was giving it his best performance.

However...

when you then heard the evidence

of what was going on,

you just didn't believe a word he was saying.

This is a man who is deeply ingrained

in a very dark,

pornographic world.

Because Albert was murdered during a sex act,

you immediately think,

"Well, there must be something sexual going on.

But I actually think it was way more complex

than was initially presented.

When we started looking into Mosquera's background...

um... and his digital media,

we established that he'd been posting

sexual content for... for a number of years.

He was on various different platforms,

and he had a number of accounts

which demonstrated the type of content he was making.

It wasn't vanilla sex.

And it was quite obvious

that he was heavily involved in the porn world

and a lot of BDSM.

They were engaging in discussions

of eating each other's... faeces.

Quite... extreme stuff.

Yes, there were a lot of stomachs churning in court when...

when we heard what Albert did.

But bottom line is, it wasn't illegal.

He didn't do anything wrong

to Yostin Mosquera.

He definitely didn't do anything

which justified... being killed.

Whilst there was a transactional nature to it...

...it all looked like it was purely consensual,

and Mosquera was quite happy providing the videos

that Albert wanted.

And the way the messages presented

and the length of time they continued,

it certainly felt like Albert saw it as a real friendship.

And when Mosquera was in the UK,

he travelled there on his own.

He wasn't taken there and back in ways that you might think of

in sort of a servitude type scenario.

Albert had paid for his flights over to the UK.

Um... Had put him up in his flat.

Um... Had paid for his English language lessons.

And, seemingly, paid for day trips out.

There didn't seem to be

any obvious restrictions or anything like that,

that had been placed on him whilst he was in the UK at all.

He went to the pub with friends.

He met friends.

He could come and go to the flat as he pleased.

While Mosquera's defence would suggest

that he was being coerced,

there's lots of evidence

that this was not a coercive

or controlled relationship.

There's plenty of evidence to say

that he was actually well-supported

and looked-after by Albert.

Albert was comparatively more wealthy...

than Mosquera.

And early on,

Mosquera perhaps realised

that he could be financially supported,

and there are certainly messages suggesting

that he was asking for money to be sent.

During the communications, there'd be times

where Mosquera would ask for money and...

Albert would send money over to him in Colombia.

And the money flow was always going one way,

so, over a period of a couple of years,

Albert sent Yostin over £5,000.

You suddenly realise...

...it was all about money.

Albert was often bailing Yostin Mosquera out.

He was often sending him money,

and at one point, Albert said to Yostin Mosquera,

"I'm not a cash machine," you know?

There were a few occasions

where Yostin asked for money

that was perhaps beyond what Albert was willing to do,

but then very quickly backtracks.

They'd been communicating online for quite some time,

and Albert had sent some money

for Mosquera to book a flight to come over to the UK.

Shortly afterwards, he lost his job

and sent messages to Mosquera,

asking him for the money back.

And at that point, Mosquera didn't reply for some time.

And it seemed like there was a trust

from Albert towards Yostin

that wasn't necessarily reciprocated.

In my opinion,

Mosquera was certainly taking advantage of Albert's vulnerability.

First online, but then, also physically in real life.

There was grooming involved.

Mosquera was grooming Albert.

Mosquera was a porn actor before he met Albert,

and he was able to lure people in.

Probably, over time, Mosquera decided that actually,

"Yes," you know, "I can see that there may be financial gain for me,"

and Mosquera was able to, over time, manipulate Albert

to the extent that Albert was starting to trust Mosquera.

There was so many years of a relationship

where trust was built.

We found Mosquera's laptop within the flat.

And it became very clear

that he spent huge amounts of time on his laptop.

He was making a number of really concerning searches.

Before Yostin travelled to the UK on the 8th of June,

he was looking at house prices in the area where the flat was.

He was searching for how much is the address worth.

He was searching for houses in Medellin and values over there.

And in the days leading up to the murder,

there are some really concerning searches.

He was searching for chest freezers,

blenders, industrial blenders.

There were searches in relation to poisoning people.

Jack the Ripper, serial killers of London.

So, there seemed to be a fascination with death and murder.

If you look at those Internet searches,

you either think this guy's really into true crime,

or he's planning to kill these guys, and he's planning to...

figure out a way to get rid of the, uh... bodies.

These kinds of searches were

a very clear indication of his intentions.

He was in total control. He was planning the murders,

and, in the end, executed his plan pretty much in detail,

based on those online searches.

A court has been hearing

how Yostin Andres Mosquera filmed himself

having sex with and stabbing Albert Alfonso,

having earlier killed Paul Longworth.

Mr Mosquera denies the murder of both men

at their flat in west London...

Up to that point, we really don't know

who we're dealing with, who Yostin Mosquera is.

But once that trial starts,

he admits that he killed Albert - he said it was manslaughter -

but he... he says he did not kill Paul.

The evidence against Mosquera for Paul's murder...

...was largely circumstantial at that point.

So, that became a focus of... of, "How could we prove

Paul's murder had been a premeditated attack as well,

and it wasn't something that just happened out of the blue?"

We were really fortunate

that there was a CCTV camera

directly opposite the address.

That CCTV camera was...

was hugely helpful for us...

...because we could show the movements of Albert and Paul

in and out of the address, and of Mosquera.

On the 8th of July,

Albert had left for work at about five o'clock in the morning.

Between half past ten and about half past eleven,

Yostin Mosquera was on his laptop.

He was on pornographic websites

and was making a number of searches.

10:41, he searches for an image of a freezer.

Around 11am, he searches,

"Where on the head is a knock fatal?"

Around 11:07, he then searches for more chest freezers

and the one that he settles on is the same one

that remains of Albert and Paul were found in.

About 11 o'clock in the morning,

Paul was seen at the window, talking to a neighbour.

And that conversation was small talk

around trees in the area and... and just general chitchat.

Between about 11:30 and 12:30,

Mosquera closes the curtains.

He subsequently comes back a while later

and opens the curtains again.

And I believe that's the time

when he's murdered Paul.

Paul is seen for the very last time alive at the window.

It's all caught on camera, a camera that's opposite their home.

So, as somebody watching it,

a journalist sitting through this case,

you weren't just hearing about it -

so much of it you were actually seeing.

And watching it with hindsight is... is horrid

because you know, at that point,

Paul is being murdered in the home, with the hammer.

His body is then stored in a divan bed.

Paul had a... a bed where the whole mattress lifted up,

and it had storage space underneath.

In that area under the bed,

we found some traces of blood.

And Paul had been put under there

after he'd been killed...

...so that when Albert came home from work,

there was no suspicion that... that he'd been murdered at that time.

When Albert came back from work,

Paul was already dead.

And even during that period, Mosquera was on his laptop.

He was visiting porn sites.

He was searching for a chest freezer.

His activity carried on as it had done for most of the day.

Albert comes home.

What's Mosquera doing?

He's searching things like,

"How long before a body starts to decompose?"

"How long before a body starts to smell?"

Little did Albert know,

Paul was dead.

and he was about to be killed as well.

At about half past nine,

Albert and Mosquera were in the bedroom,

and they started engaging in sexual activity with each other

that was being filmed.

There was a webcam underneath the desk.

Um... And there was another camera...

um... on the table to the side.

When we were able to view, um... the murder video

from the different angles we had,

we could see that...

...prior to them starting their sexual activity...

...Mosquera had hidden a knife under a piece of cloth

on the table where one of the cameras was,

which again showed me that, a hundred percent,

that was premeditated, a planned attack.

The first time it was played in court,

I chose not to watch it.

But I then chose to watch...

...the bit after, once the... the killing is done.

And you see him,

seconds after he's just murdered Albert -

Albert is lying there on the floor -

and Yostin breaks into this dance,

a dance and a song in Spanish.

He is elated.

You're looking at him in the court.

And you cannot believe you are seeing him

in front of you on a huge screen,

dancing and singing seconds after he's just killed someone.

How is someone capable of that?

You can still hear Albert breathing his last breaths.

And Mosquera is logging into bank accounts

and searching financial...

information for Albert and Paul.

It did not seem like the actions of somebody

who'd just committed a horrific, brutal murder.

You see him lean into the camera,

but what he's doing is, he's going onto the computer,

and within seconds, he's trying to withdraw £4,000,

transfer it from Albert's bank account

to Yostin Mosquera's Colombian bank account.

How can you be so calm,

and with the blood of your victims on your hands,

try and steal from them?

There was no...

...sense of shock.

No sense of,

"Oh, my God! what have I done?"

This isn't somebody...

who has, you know, been a prisoner.

This is a person who has...

...planned this murder, and so far,

it seems to be going...

...exactly how they wanted it to go.

The next day, he messages Albert's boss -

ON Albert's phone -

saying, "I've had to go to Costa Rica for a family bereavement."

That text message was sent to cover his tracks,

so there wouldn't be suspicion,

and people wouldn't come looking for Albert.

Next, Mosquera arranges for the chest freezer

to be delivered to the address.

And later on that day, he starts to talk

to a man and van and arranges for him to...

um... come and collect him from the address.

He's very much covering tracks.

But...

why didn't he just leave the bodies?

Why didn't he leave Paul and Albert in their flat

and get on a plane back to Colombia?

He went through all this planning, but...

...there was a catalogue of errors.

Leaving the luggage label on the suitcase,

directing the police

exactly to where they should go.

Not clearing his search engines.

Leaving the card in the camera

where he's filmed the murder.

He'd dismembered their bodies.

He'd put some of them in the freezer.

And he didn't then turn the freezer on.

He... He left it unplugged.

So many things...

...I don't understand. I STILL don't understand.

Mosquera's behaviour

post the murders,

professionally speaking,

I would describe as very chaotic.

Ultimately, his... his escape plan was

a very, very odd plan.

So, that would suggest

that there may be some neurological impairment,

something that's not connecting Mosquera to his own behaviour.

And there were comments made in court

about Mosquera regarding his charisma, um...

his lying, his... the fact that he gets easily bored.

The fact that he can be charming.

These are all features of...

of a serious personality disorder

and those behaviours were evident in court as well.

I spent a lot of time in that courtroom,

as evidence was being read out,

looking at Yostin Mosquera

because you wanna look into the eyes of a killer.

You wanna get a sense of what they're like.

You sort of have all these images

of what this person's gonna be like.

And I remember being so surprised

because he actually looked

like he was enjoying the whole thing.

He seemed very engaged with what was being said.

But remorse wasn't there.

The actions he's... that he's taken,

show a really callous individual,

a dangerous... a dangerous man

who clearly showed no care

for what he'd done.

All of those features...

truly make this...

...a really unusual... murder,

and one that will stay with me for a very, very long time.

The psychiatric assessment that Mosquera had, uh...

didn't reveal any kind of mental disorders

that would have, um... provided

any mitigating circumstances or mitigating evidence.

But, at the same time,

the ways in which he behaved before the murders,

and after the murders,

would give a very clear indication

that he had traits of psychopathy.

Some people might think, "Is he mad?"

But, actually, I just thought...

..."This was all about money. He wanted Albert and Paul's money.

He wanted them out the way, so he could have their money."

Mosquera was sentenced to...

a really significant prison sentence.

Sadly, it will never bring Albert and Paul back.

Nothing can... Nothing can do that, but...

recognises the... the true brutality

and callous nature of...

of these murders that Mosquera had committed.

Paul and Albert were both victims.

But I think, in this,

you really realise that...

Paul was caught up in something

he had absolutely no part in.

He wasn't in any way involved

in the online sexual exchanges.

And he was completely unaware

that there was such a dangerous man

living under the same roof as him.

It shouldn't have happened to either of them, but...

...you get the sense that Paul...

did it for... Albert.

And... he suffered for it...

...which he shouldn't have.

He was such a nice fella.

Why, you know, anyone would want to harm him,

just af... just come... not long out of retirement.

And then, that fella takes it all away from them.

There's so many unanswered questions.

If his purpose had been...

...to steal what assets they had...

...that's bad enough.

But to do what he did...

...in the way that he did it...

...I don't understand.

Why did he do it?

Why didn't... Why didn't he just go back to Colombia?

Why did he have to kill 'em?

Especially chopping 'em up.

What kind of a man would do that?

I felt great sadness.

Great sadness.

Very, very angry...

...with Albert bringing this monster into their home.

But I think it's important to remember them both...

...as the... interesting...

...fun...

...kind...

nice people that I knew.

Albert may have had his sexual quirks

that I don't know about or understand,

but he was a decent person when I knew him.

Most of all, I remember Paulie with great fondness.

Great fondness.

Love, really.

And I'm doing this interview because I feel I owe it to him.

Um...

And I just hope, wherever he is now, he's happy.

Albert and Paul were in a loving relationship.

They lived different lives in certain aspects,

but they loved each other.

They needed each other. They were companions.

They were... They were each other's world.

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