Crime Next Door

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

Episode 6– The Ring

Dr Lauren Bradford Clarke was just four years old when her mother Lesley Howell was murdered by her father Colin. He was assisted in the killing by the woman he was having an affair with – Hazel Stewart.

Now an assistant professor of criminology at Nottingham university, Lauren is determined that she will not be defined by her family’s past – and that she will reclaim her mother’s memory for her own future.

Episode written and presented by Dr Lauren Bradford Clarke

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

Episode 5 – The Trial

Colin Howell’s police interviews reveal the true extent of Hazel’s role in the murders of Lesley and Trevor, but Hazel claims she was under his control.

During Hazel’s trial for double murder, Lesley’s daughter Lauren is shocked to hear her police interviews played in court - and believes Hazel could have stopped the murders from taking place

Narrated by Lucy McConnell

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

Episode 4 – The Secret

After the killing of Lesley and Trevor, Colin and Hazel continue their secret affair.

Lesley’s daughter Lauren begins to see Hazel as a mother figure, unaware of the dark secret she shares with her father Colin.

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

Episode 3 – The Innocent

On the day of their son’s second birthday, Colin Howell prepares to murder his wife Lesley and phones Hazel to confirm the plan is going ahead that night.

With assistance from Hazel, while their children sleep, Colin carries out the murders of Lesley and Trevor and prepares to stage a suicide scene in a garage in the village of Castlerock.

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

Episode 2 - The Affair

In a close-knit Baptist church community in Coleraine, Northern Ireland - Hazel Buchanan, married to a local RUC officer - begins a secret affair with married dentist Colin Howell.

When the affair is discovered, the church arranges counselling for both couples - but Colin Howell begins plotting with Hazel to murder their partners.

Narrated by Lucy McConnell

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

Episode 1 - The 12 Apostles

When the bodies of Trevor Buchanan and Lesley Howell are found in a garage in the quiet coastal village of Castlerock, Northern Ireland - police believe it is a suicide pact.

Narrated by Lucy McConnell

A BBC Northern Ireland production

The story of Lesley Howell and Trevor Buchanan. In 1991 they were murdered by their spouses who then staged a scene to make it look like they had taken their own lives. 18 years later - one of the killers decided to confess.

In Crime Next Door: The Confession; family, friends, former police officers and journalists tell the story of a much loved mother and sister, an adored father and brother – and the devastation when the truth about their deaths was finally revealed.

As police put out a renewed appeal, we question whether long ignored patterns of sexual violence raise the possibility of a serial offender and whether Diane’s killer could have been stopped.

We are also reminded that Diane Sindall’s murder is not just about the past as we visit a vigil for victims of violence against women.

Presenter: Olivia Graham.

There’s graphic descriptions of violence in this series. For details of help and support in the UK, visit bbc.co.uk/actionline.

A Geographical Profiler looks at the two locations connected to Diane Sindall’s murder. It’s suggested that Diane’s killer was local and may have struck before.

As new testimony suggests Diane may not have been attacked in the alleyway and emerging accounts name a local figure, the investigation edges closer to a new suspect.

Presenter: Olivia Graham.

There’s graphic descriptions of violence in this series. For details of help and support in the UK, visit bbc.co.uk/actionline.

Returning to Birkenhead in the wake of Peter Sullivan’s release, we focus on Diane Sindall and the community still living with her murder.

Peter shares details of his arrest, interviews and alleged police pressure, alongside renewed police enquiries that revisit overlooked witnesses and potential suspects.

As officers collect fresh DNA and old memories resurface, the search begins anew for the man known only as 'Unknown Male One'.

Presenter: Olivia Graham.

There’s graphic descriptions of violence in this series. For details of help and support in the UK, visit bbc.co.uk/actionline.