Series Writer
Los habitantes de una isla británica son víctimas de un escape radiactivo de un vertido ilegal en el mar. Por ello casi todos reproducen una extraña enfermedad que un científico intentará curar, aunque se tenga que enfrentar con todos sus habitantes.
Story
The Doctor, Jamie and Zoe return to Earth and become embroiled in the schemes of Tobias Vaughn. They meet up with an old friend, Colonel (now Brigadier) Lethbridge-Stewart, and some old enemies, the Cybermen.
Story
The Second Doctor and Jamie arrive on what appears to be a space station called the "Wheel in Space" it's here that they meet Zoe Herriot a young parapsychology librarian, The Doctor hits his head concussing him leaving Jamie and Zoe to defend off the Cybermen from taking over "The Wheel in Space."
Writer
Aided by his two assistants Jamie and Victoria, the Doctor lands the TARDIS on Telos, last resting place of the infamous Cybermen. There he discovers a band of archaelogists on a secret expedition to unearth the reason for his old enemies' extinction. In the underground shadowy depths, they find the icy tomb. A whole army in hibernation. A threat to no one, if the temperature remains low. But if the traitor in their midst gets his way, things could really heat up.
Writer
The TARDIS arrives in 2070 on the Moon, where a weather control station under the command of a man named Hobson is in the grip of a plague epidemic — in reality the result of an alien poison planted by the Cybermen. Jamie is knocked unconscious and lapses into a delirium, leaving the Second Doctor, Ben, and Polly to fight off a massive Cyberman attack.
Writer
The Doctor's TARDIS lands at the Snowcap space tracking station in Antarctica in December 1986. A routine space mission starts going wrong. When the base personnel's suspicions are roused, the Doctor informs them that the space capsule is being affected by the gravitational pull of another planet — a tenth planet in the Solar system.
Idea
La TARDIS llega a Londres en 1966 y el Primer Doctor y Dodo visitan la Torre de Correos. Allí conocen al profesor Brett, cuya nueva y revolucionaria computadora VOFA (Voluntad de Operación de Funcionamiento Análogo) puede pensar por sí misma y pronto se conectará a otras computadoras importantes en todo el mundo, un proyecto supervisado por el funcionario Sir Charles Summer.