Desc: Bill Viola: The Road to St Paul's: Directed by Gerald Fox. With Bill Viola, Kira Perov, Alessia Patregnani, Ariana Afradi. A powerful, moving film about the world's greatest video artist Bill Viola and his wife and collaborator as they embark on a twelve year odyssey to create and install two permanent video installations, Mary and Martyrs into St Paul's Cathedral, London.