Doctor Who (1963–1996)Season 7Inferno: Episode 3BBC One Duration: 25 minutes Audio described SignedFirst broadcast: Sat 23rd May 1970, 17:15 on BBC One WestLatest broadcast: Sat 23rd May 1970, 17:15 on BBC One WalesAvailable for yearsWatch nowTransported to a parallel world, the Doctor discovers that England is under military rule and the drilling project is at a more advanced stage.GenresDramaSciFi & FantasyBrandDoctor Who (1963–1996)SeriesDoctor Who (1963–1996): Season 7 Source: BBC Online