The Leisure Hive is the first serial of the 18th season of the British science fiction television series Doctor Who, which was first broadcast in four weekly parts on BBC1 from 30 August to 20 September 1980. It marks the return of John Leeson as the voice of K9. In the serial, a criminal organisation of alien Foamasi, called the West Lodge, attempt to buy the planet Argolis from the Argolin people there as a West Lodge base. Meanwhile, the young Argolin Pangol (David Haig) seeks to start a war against the Foamasi his people had previously lost to with an army made up of clones of himself. Plot The Fourth Doctor and Romana's holiday in Brighton ends abruptly when K9 chases a ball, takes in seawater, and explodes. They instead venture to the Leisure Hive of Argolis, a holiday complex and message of peace built by surviving Argolins after their devastating 20-minute war with the Foamasi forty years earlier. They arrive at a point of crisis: the Leisure Hive is facing bankruptcy (because of falling tourist trade due to stiff competition from other leisure planets) and the Argolins' Earth agent, Brock, and his lawyer Klout have arrived bearing an offer to buy the planet outright. However, the offer is from the Foamasi, the only species that could live on the planet's radiation-infused surface, and the Argolin board will not consider it. The shock of events causes Board Chairman Morix's rapid death – from the Argolin war curse of advanced cellular degradation – and his consort Mena is declared the new Chairman. The Doctor is intrigued by the manipulation of tachyons in the Hive’s Tachyon Recreation Generator, which is the main tourist attraction and can duplicate and manipulate organic matter. He witnesses a human tourist being killed after it is sabotaged in the latest of a series of such acts. When Mena returns to Argolis, her body clock begins to speed up, a side-effect of the radiation-heavy atmosphere. Earth scientist Hardin has been brought to Argolis to help her and her people by using time experiments to rejuvenate a people rendered sterile by the war. Recognising their value as scientists, Mena, instead of confining them, engages the Doctor and Romana to help Hardin with his work. The time travellers know Hardin has been faking his work, but Romana feels that the experiments should have worked. After discovering a skin of