The Three Doctors (Doctor Who) the Third Doctor (Jon Pertwee) for help when Omega drains their civilisation's power. The serial opened the tenth anniversary year of the series, and features the first three Doctors all appearing in the same serial. This makes it the first "Doctor Who" story in which an earlier incarnation of the Doctor returns to the show. A superluminal signal is sent to Earth, carrying with it an energy blob that seems intent on capturing the Doctor. The homeworld of the Time Lords is also under siege, their power being drained through a black hole. Trapped themselves, and desperate to send help,
The Invasion (Doctor Who) The Invasion (Doctor Who) The Invasion is the partly missing third serial of the sixth season of the British science fiction television series "Doctor Who", which was first broadcast in eight weekly parts from 2 November to 21 December 1968. It marks the first appearance of UNIT and, notably, Corporal Benton, later to become a Sergeant during the Third Doctor era. It was the first incomplete "Doctor Who" serial to be released with full-length animated reconstructions of its two missing episodes. After escaping the Land of Fiction, the Doctor, Jamie and Zoe find that they have materialized near the Moon