This Week in USA
The Invisible Enemy: Part One
Last updated 02 January 2017
6:00pm-6:30pm EST (23:00 GMT) < > « »
Retro TV
Featuring: Tom Baker, Louise Jameson, John Leeson, Michael Sheard
An alien virus infects the human crew of a refuelling station on Titan, one of the moons of Saturn. The Doctor is also infected and becomes possessed by the will of the Nucleus.
Synopsis Source: Doctor Who Guide
Broadcast Source: Retro TV