Watch S15:E08 - The Invisible Enemy (Pt. 4)
S15:E08 - The Invisible Enemy (Pt. 4) poster

Classic Doctor Who: The Fourth Doctor

S15:E08 - The Invisible Enemy (Pt. 4)

Classic Doctor Who
Sci-Fi · 1977 · 23 min · 7 SeasonsTV-PGSubtitles Icon
The Nucleus has escaped the Doctor's body and grown to human size.
S15:E08 - The Invisible Enemy (Pt. 4)

S15:E08 - The Invisible Enemy (Pt. 4)

23 min
TV-PG

The Nucleus has escaped the Doctor's body and grown to human size.

Cast

Tom Baker

Genres

Sci-Fi, Adventure, Drama

Subtitles

English
TV-PG
This program contains material that parents may find unsuitable for younger children.
Welcome to Tubi
Unlimited Movies, TV Shows, and Live News
Credit Card Off Icon
Free Forever
No credit card required
Find the Unfindable
All your favorite titles and so much more
Account 24 Icon
Better When You Register
Personalize your experience
Tubi logo
Slash
S15:E08 - The Invisible Enemy (Pt. 4)
FacebookInstagramXLinkedIn
Copyright © 2026 Tubi, Inc.
Tubi is a registered trademark of Tubi, Inc.
All rights reserved.
Device ID: 87a9d187-cea8-4f17-ab8b-abbb9c7a0a37
Made with Heart in San Francisco