I Swear tells the remarkable story of John Davidson, an activist from the town of Galashiels in Scotland . The film is not the first about Davidson: It was the 1989 BBC documentary John’s Not Mad , which followed Davidson’s life with Tourette’s at 16, which originally caught the eye of writer-director Kirk-Jones, who would return to Davidson’s story decades later. Facing a lack of understanding as Tourette’s was not well understood in the 1980s, Davidson endured an extraordinary struggle on his