This Week in United Kingdom

The Invisible Enemy: Part One

Last updated 09 January 2017

Broadcast: Thursday 13th July 1978
7:00pm-7:25pm BST (18:00 GMT) < > « »
(actually broadcast at 18:59:51)
BBC One

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 notes:

The repeat wasn't broadcast by BBC Cymru, which showed Heddiw instead.

Broadcast Source: BBC

Ratings Information:

Consolidated figures: 4.900m viewers (+7 days), 60th place