The Doctor, Sarah Jane Smith and Harry Sullivan return to Space Station Nerva in search of the TARDIS. Instead, they find peril, disease and... Cybermen! These cybernetic monsters have devised a plan to eliminate the greatest threat to their existence. And if the Doctor and his human compatriots do not play their part in this scheme, they are to be destroyed. Cast: Tom Baker (The Doctor), Sadie Miller (Sarah Jane Smith), Christopher Naylor (Harry Sullivan), Nickolas Grace (Kellman), Nicholas Asbury (Commander Stevenson/Pietersen), Nicholas Briggs (The Cybermen/Cyberleader/Warner), Amanda Shodeko (Anitra/Coetzee), Robert Whitelock (Bill Lester/Badenhorst). Other parts played by members of the cast
