Doctor Who
Earthshock, Part Four
Season 19, Episode 22 · Aired 1982-03-16

Synopsis
The Cybermen have taken over the bridge of the freighter. They fit a device onto the freighters control panel that will cause the ship to explode. The ships fuel will cause a explosion so strong that it will destroy the Earth completely. The Doctor and Companions battle against the Cybermen in an attempt to foil their plan. Someone pays the ultimate price to save the Earth and crew of the freighter.
In the series
This episode is part of Doctor Who (1963–) on BBC.
A time-traveling renegade in a police box — regeneration as infinite franchise life.
Key cast
- William Hartnell as The First Doctor
- Patrick Troughton as The Second Doctor
- Jon Pertwee as The Third Doctor