The Invisible Enemy (4) S8E8 - The Invisible Enemy (4) 1977
The Nucleus, now grown to human size, is determined to spawn and take over the Galaxy. Only the Doctor and Leela can stop it.
- Released: 1977-10-22
- Runtime: 50 minutes
- Genre:
- Stars: Tom Baker, Louise Jameson, John Leeson
- Director: Derrick Goodwin