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