Marie Lennon and Andy Howard reflect on an extraordinary first day at the Dawn Sturgess Inquiry.

We hear that there was enough nerve agent hidden in a perfume bottle to kill thousands. Dawn is described as an “innocent victim, caught in the crossfire of an illegal and outrageous assassination attempt.”

As the finger is pointed at Putin, Dawn’s family call on the Russian president to give evidence and look them in the eye.

This episode was made by Marie Lennon, Andy Howard, Tom Ryan & Dan O’Brien.

Executive production by Mary Sanders and Naomi Wordley.

Theresa May, who was prime minister at the time of the attack, recalls when she first heard about the Salisbury poisonings.

Baroness May describes how it felt to stand in the House of Commons and blame the Russian state for the attack, the moment she heard that a British citizen had been killed and shares her hopes for the Dawn Sturgess Inquiry.

This episode was made by Marie Lennon, Andy Howard, Tom Ryan & Dan O’Brien.

Executive production by Mary Sanders and Naomi Wordley.

More people fall ill from Novichok poisoning.

It’s four months since the nerve agent attack on former Russian spy Sergei Skripal and his daughter Yulia. Salisbury is starting to return to normal and then, it happens again.

Local mum Dawn Sturgess is given a bottle of perfume that contains the deadly chemical Novichok.

Days later, Dawn dies in hospital leaving her family and friends wondering how she was poisoned with a Russian-made chemical weapon.

This episode was made by Marie Lennon, Andy Howard, Tom Ryan & Dan O’Brien.

Executive production by Mary Sanders and Naomi Wordley.

Salisbury becomes the scene of a major international incident.

Sergei Skripal and his daughter Yulia are found poisoned on a park bench.

Then, an astonishing discovery: he’s a former Russian spy and they've been poisoned with Novichok, one of the deadliest substances in the world.

Parts of Salisbury are locked down as police try to find the poison.

This episode has been updated to reflect Sergei Skripal’s role as former GRU officer.

This episode was made by Marie Lennon, Andy Howard, Tom Ryan & Dan O’Brien.

Executive production by Mary Sanders and Naomi Wordley.

Six years after a mum was poisoned by a Russian nerve agent in Wiltshire, will a public inquiry bring answers?

Presenter / Producers: Marie Lennon and Andy Howard Producer: Tom Ryan Senior Reporter: Dan O’Brien Consultant: Jake Williams Online Producer: Rachael Smith Executive Producers: Mary Sanders and Naomi Wordley Commissioning Editor: Alistair Miskin

In this final episode of Death On The Farm - the community is still battling for a different verdict. We hear how the police are conducting a forensic review, which may or may not reveal new clues. But patience amongst the locals is wearing thin... and many fear that the opportunity to clear Griff's name has come and gone.

But perhaps a modern day expert can find new clues from within the original police report. Dr Brett Lockyer is a Home Office Pathologist - who has studied hundreds of crime scenes and unexplained deaths. His analysis of the scene at Ffynnon Samson, and the events which took place there, differs from the conclusion police came to at the time. What's more - there is documented evidence which he believes could offer a very different sequence of events, and the presence of a third party.

But will the community rest easy with this new information coming to light? Or will they remain in a state of limbo - until the police offer can offer an official response? For Huw Absolom, Huw Gibby, and for everyone in Llangolman, they won't stop fighting to change the course of justice, or to clear the name of one of their own.

Death On the Farm is narrated by Bettrys Jones. It's produced by What's The Story Sounds for BBC Wales

The official police report into the deaths at Ffynnon Samson is the most details account of the scene, and the events which took place.

Pembrokeshire is a safe and secure place to live. But for a time in the 1980's, the feeling for many was different. Two violent murders once again had communities in fear. But for some, these latest crimes had parallels with Ffynnon Samson. And questions began to be asked as to whether the same person could be responsible.

In this episode we meet Aled Scourfield - the reporter who first learned about these crimes at the trial of a man called John Cooper. A man who is now in prison for multiple murders. It was Aled who, after hearing rumours of a link, first asked whether Cooper might have been in Llangolman back in 1977. Whether John Cooper might have found his way to the remote farmhouse, and face to face with Griff and Patty. It's a question which has divided this community... a theory which lacks any evidence. But for some it's more compelling the closer that you look.

It's a matter of weeks since the crime scene at Ffynnon Samson was discovered, but the loose ends are already being tied into a neat bow.

The police investigation led by DCI Pat Molloy has come to an end, the evidence all gathered and conclusions drawn. His file is passed to a coroner to conduct a formal inquest and close the case.

But before that, the men of Llangolman are invited to attend a funeral service for the couple... a service which doesn't allow women to attend. And there's more controversy, as the bodies of Griff and Patty are barred from entering the local chapel.

How will the community respond? Can they come to terms with the findings of the police? And will they be able to close the lid on this dark chapter? Or will the rumour mill continue to swirl long after the couple are laid to rest?

By the end 1976, the community in Llangolman was still waiting for answers. Police officers had taken over the village, conducting their investigation into the deaths of Griff and Patti Thomas.

This episode chronicles those events from early 1977. And it tells the story of the investigation and how it was reported by local media. By the end, there's an alarming new theory which threatens to derail everything the community believed to be true.

Narrated by Bettrys Jones