The Doctor, Vicki and Steven arrive on an arid planet where they meet the beautiful Drahvins and the hideous Rills. Each has crash-landed after a confrontation in space. The Rills are friendly, compassionate explorers. The Drahvins are dull-witted, cloned soldiers, terrorised by the intelligent, warlike matriarch Maaga.

Cast:William Hartnell, Maureen O'Brien, Peter Purves, Stephanie Bidmead, Marina Martin, Susanna Carroll,

Genre:Science Fiction, Adventure, Drama,

country:United Kingdom,

Production:BBC,