All seven four-part episodes from the 18th season of the classic BBC sci-fi adventure drama starring Tom Baker as the legendary Time Lord. In this instalment, the Doctor, assisted by companions Adric (Matthew Waterhouse), Romana (Lalla Ward), Nyssa (Sarah Sutton) and Tegan Jovanka (Janet Fielding), encounters foes including Meglos, the Great Vampire and the Master (Geoffrey Beevers/Anthony Ainley). The episodes are: 'The Leisure Hive', 'Meglos', 'Full Circle', 'State of Decay', 'Warriors' Gate', 'The Keeper of Traken' and 'Logopolis'.