This podcast series has moved, but you can now find all of my Radio 4 investigative podcasts in the Marianna In Conspiracyland feed.For all of my investigations, including Why Do You Hate Me?, Disaster Trolls, War on Truth and Death by Conspiracy?, just search for Marianna In Conspiracyland on BBC Sounds.

What happened to the people who fell down the rabbit hole into a world of conspiracy theories? How far have they fallen – and how far will they go? In this 10-part series, the BBC’s Disinformation and Social Media Correspondent Marianna Spring investigates the legacy left by the rise in conspiracy movements in the UK and the media machine at its heart. She exposes how radical they have become and how action is spilling offline. At the extreme end, we’ve seen conspiracy-theory driven riots at the US Capitol and a coup-attempt foiled in Germany. But what’s happening in the UK?

Catrin Nye gets a mysterious call that plunges her into an unsettling world of self-help and cults. What happens when a life coach takes over your life? In early 2019 Jeffrey Leigh-Jones from Portsmouth got a life coach. Someone to mentor him in life and help him realise his business ambitions. Two years later, Jeff had sold his house, his relationship was in pieces, and he had handed over tens of thousands of pounds. And he wasn’t the only one. In this eighteen-month investigation for the BBC, journalist Catrin Nye and her team expose control, intimidation and fear at a mysterious life coaching company taking over people’s lives and ripping families apart. As the investigation hots up, the group fights back, and there’s a surreal final showdown… Listen to all eight episodes from Wednesday 5 April 2023. Reporter: Catrin Nye Written by: Jamie Bartlett and Catrin Nye Producers: Osman Iqbal, Natalie Truswell, Ed Main and Jo Adnitt Researcher: Aisha Doherty Executive producer: Ravin Sampat Sound engineer: James Bradshaw Original music by: Phil Channell Commissioner: Rhian Roberts

As Gary is remembered by those he left behind, what does his story tell us about the world we live in – online and off – right now? Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Marianna asks what we get wrong about people who are drawn to conspiracy theories – and finds out who's really at risk of falling down the rabbit hole. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Marianna looks at the role that social media played in pushing Gary towards conspiracy theories. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Marianna examines new evidence and fills in the gaps of Gary’s last days. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Filmmaker Tristan hears about the death of his cousin Gary. Seeking to understand what happened, Tristan returns to Shrewsbury, where he encounters Charlie Parker. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Gary’s death is covered in the local media – and online, the information battle heats up. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Marianna meets Charlie Parker, the man who ran the Facebook group Gary was in before he died. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Marianna goes to a rally on the invitation of a man who believes strange things about Covid. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Two of Gary’s closest friends give us the inside story of his journey towards conspiracy theories. Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Gary Matthews was into conspiracy theories - until he caught Covid and died. What role did falsehoods play in his death? BBC disinformation reporter Marianna Spring investigates. Gary was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling

Gary Matthews was a talented artist and photographer, sociable and well-liked - a familiar face in his hometown of Shrewsbury. A few years ago, his friends noticed that he was getting into conspiracy theories. Like millions of others, he fell for Covid pseudoscience when the pandemic hit. In January 2021, at the age of 46, Gary caught the virus, and died. Marianna Spring, the BBC’s specialist disinformation reporter, travels to the serene medieval Shropshire town that Gary Matthews called home to investigate what happened to him - and why. While delving into the conspiracy underbelly of this picturesque town, she finds out more about Gary's life - and discovers a story that's been repeated across the country, and around the world. Producer: Ant Adeane Editor: Mike Wendling