In voice over, Derek Jarman's friend and collaborator Tilda Swinton begins reading "Letter to an Angel", a haunting and beguiling text she wrote in 2002. By then Jarman, one of Britain's best loved and most original artists, had been dead for eight years. An honest and previously unseen interview, shot in 1991 with Jarman in the shadow of his impending death, is the core of the film. Both letter and interview are intricately interwoven with rarely seen home-movie footage of Derek and his family, archive material, excerpts from Jarman?s feature films, pop promos, super 8 work, and new footage of Tilda Swinton in Dungeness and London and the director Isaac Julien exploring the Jarman archive.