Yostin Mosquera is on the run and everyone is about to find out what’s in those suitcases on Clifton Suspension Bridge. A manhunt is underway. But what brought Mosquera to Bristol - and where is he now?

The police quickly link him to a flat in London. When officers break down the door, they find blood everywhere. On the floors, the walls, the ceilings.

There’s a bloodstained hammer, and a chest freezer in the hallway. Only when officers open that freezer do they truly know what they’re dealing with.

Yostin Mosquera is a killer. He’s got two bodies on his hands and big decisions to make. He books a man-with-a-van saying he needs to move some heavy cargo.

But where is he going and what is he going to do with the bodies? He heads for Bristol – parts of Paul Longworth’s body in a silver trunk, parts of Albert Alfonso’s body in a red suitcase.

He ends up in Clifton, a leafy suburb of Bristol. He makes his way onto the iconic Clifton Suspension Bridge where he raises the suspicions of security staff. They’re about to make a terrible discovery.

Exploring the events which led to the murders of Paul Longworth and Albert Alfonso's in their west London flat.

While Albert is doing a lifeguard shift in a nearby gym, Columbian porn performer Yostin Mosquera searches the internet for, “Where on the head is a knock fatal?”. Then he takes a hammer to the skull of Paul Longworth.

Once dead, Mosquera puts Paul’s body in storage space under the bed. When Albert returns from work, the pair start filming an extreme sex session.

It turns into a brutal attack by Mosquera on Albert – captured on four cameras in the bedroom.

Yostin Mosquera, 35, is been found guilty of the murders of Albert Alfonso, 62, and Paul Longworth, 71, who lived together in Shepherds Bush in London.

Mosquera is an online porn maker from Columbia who meets Alfonso online through videos of extreme sex, something that eventually brings Mosquera to London.

As Alfonso sends money, funds flights and plans day trips out in the capital, Mosquera is already making plans.

Two bodies, two suitcases, one man, one bridge. Yostin Mosquera was on trial for the murders of Albert Alfonso and Paul Longworth after their body parts were found in Bristol.

Uncovering the story of how the bodies parts of the two men from Shepherds Bush in London came to be discovered in suitcases left on Clifton Suspension Bridge.

The court case followed a trail of extreme sex, where one of the murders was captured on camera.

Presenter: Adam Crowther and Fi Lamdin. Producer: Beth Cruse. Sounds Producer: Tom Ryan. Online Producer: Rachael Smith. Executive Producer: Tamsin Curnow and Mary Sanders. Commissioning Editor: Alistair Miskin.

This series contains distressing details. For information or support visit bbc.co.uk/actionline.

In the summer of 2024, three young girls are murdered whilst at a dance class in Southport, Merseyside. 10 others are also injured in the knife attack, including eight children.

Teenager Axel Rudakubana, arrested at the scene, is in court accused of murder, attempted murder and a terrorism charge.

As his trial begins, he unexpectedly enters guilty pleas to all charges.

Jailed for a minimum of 52 years, the judge says it's highly unlikely Rudakubana will ever be released.

In the summer of 2024, three young girls are murdered whilst at a dance class in Southport, Merseyside. 10 others are also injured in the knife attack, including eight children.

Teenager Axel Rudakubana, arrested at the scene, is in court accused of murder, attempted murder and a terrorism charge.

As his trial begins, he unexpectedly enters guilty pleas to all charges.

We ask why he appeared in court charged with an offence under the terrorism act, but wasn’t labelled a terrorist.

In the summer of 2024, three young girls are murdered whilst at a dance class in Southport, Merseyside. 10 others are also injured in the knife attack, including eight children.

Teenager Axel Rudakubana, arrested at the scene, is in court accused of murder, attempted murder and a terrorism charge.

As his trial begins, he unexpectedly enters guilty pleas to all charges.

We examine his violent past.

In the summer of 2024, three young girls are murdered whilst at a dance class in Southport, Merseyside. 10 others are also injured in the knife attack, including eight children.

Teenager Axel Rudakubana, arrested at the scene, is in court accused of murder, attempted murder and a terrorism charge.

As his trial begins, he unexpectedly enters guilty pleas to all charges.

We take you inside the courtroom.

In the summer of 2024, three young girls are murdered whilst at a dance class in Southport, Merseyside. 10 others are also injured in the knife attack, including eight children.

Teenager Axel Rudakubana, arrested at the scene, is in court accused of murder, attempted murder and a terrorism charge.

As his trial begins, he unexpectedly enters guilty pleas to all charges.

In this series, we’ll take you inside the courtroom for a behind the scenes look at the inner workings of crime and prosecution.

Follow the trial of Metropolitan firearms officer Martyn Blake, who was charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, was found not guilty to murder.   

In this final episode, reporters Ross Ryan and Adina Campbell assess the impact the Chris Kaba case has had and look at the impassioned debate the case has raised. They look at police accountability – and ask: How should the police be policed? They discuss the reaction amongst black communities. Finally, they talk about the Crown Prosecution Service, and the judicial system - asking: Should Martyn Blake have been put on trial for murder?

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who was charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, pleaded not guilty to murder.

As reporting restrictions are lifted post-verdict, in this episode reporters Ross Ryan and Adina Campbell learn about Chris Kaba's criminal past, including his association to one of London's most notorious gangs - the 67. We also find out how Chris Kaba was named as the gunman in a nightclub shooting days before he died.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who was charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, pleaded not guilty to murder.

In this episode, reporters Ross Ryan and Adina Campbell hear the conclusion of the trial with the jury finding Martyn Blake not guilty of Chris Kaba's murder. We'll also hear how the Commissioner of the Metropolitan Police reacted to the verdict, as well as Chris Kaba's family.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

With the jury poised to be sent out to deliberate on the verdict, in this episode reporters Adina Campbell and Ross Ryan bring you the details of the closing arguments from both the prosecution and the defence. We’ll hear about the prosecution's accusation that some of Martyn Blake’s evidence has been “fiction”, and the defence’s claim that there is little evidence of Martyn Blake being “angry and frustrated“.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this episode, reporters Adina Campbell and Ross Ryan hear about a witnesses who was called by the defence on Day 11 of the trial, and how she wept in court when describing the night Chris Kaba was killed. We’ll also bring you the details of the judge’s advice to the jury before they retire to consider a verdict. And Adina and Ross are joined by a criminal barrister to explain what it’s like to construct an argument in a big trial like this.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this episode, reporters Adina Campbell and Ross Ryan follow the prosecution's cross-examination of Martyn Blake, where they accuse him of intending to aim for Chris Kaba's head and kill him. They hear Martyn Blake's denial and insistence he was aiming at the 'central body mass' of Mr Kaba, and that he intended only to stop the car he was driving.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this episode, reporters Adina Campbell and Ross Ryan hear how Martyn Blake told the jury he was "filled with dread" and thought one of his colleagues could have died, in the moments before he killed Chris Kaba. We’ll also find out what Officer Blake said in response to the allegation he intended to kill Chris Kaba.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this episode reporters Adina Campbell and Ross Ryan follow the trial as it enters its second week, with experts - including a forensic scientist and a pathologist - entering the witness box. We also hear more details of a statement Martyn Blake made after he shot Chris Kaba, in which he said is "truly sorry" for the "enormous distress" felt by the family, but insisted it was "entirely proportionate, lawful and necessary".

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this episode reporters Adina Campbell and Ross Ryan follow the trial as it continues, with Martyn Blake's colleagues - nine of them in total - entering the witness box. And we find out more about the job firearms officers do from a former strategic firearms commander.

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin

Follow the trial of Metropolitan firearms officer Martyn Blake, who has been charged with the murder of Chris Kaba. Chris died from a single gunshot after being stopped by police in Streatham, south London, on Tuesday 5 September 2022. Martyn Blake, who was previously known only as NX121, has pleaded not guilty to murder.

In this first episode reporters Ross Ryan and Adina Campbell follow the trial's opening, with the prosecution arguing Martyn Blake's actions were "not reasonably justified or justifiable". And we hear of Martyn Blake's belief that "one or many" officers could be killed as the suspect attempted to escape at "any cost".

Producer: Ross Ryan News Editor: Gemma Stevenson Executive Producer: Lorraine Maguire Commissioning Editor: Alistair Miskin