7/7 Ripple Effect is a 57-minute homemade film about 7 July 2005 London bombings, produced and narrated by John Hill. The film disputes the official account of events, a terrorist attack on public transport in Central London, by four suicide bombers later named as Hasib Hussain, Germaine Lindsay, Shehzad Tanweer and Mohammad Sidique Khan. Hill released the film under the pseudonym "Muad'Dib", the name of a character from the Dune books.