Watch Doctor Who: The Invasion (1968) Online
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- RUNTIME: 3h 14m
- COUNTRIES: United Kingdom
- Subtitles: English
The Doctor, Jamie and Zoe return to Earth and become embroiled in the schemes of Tobias Vaughn. They meet up with an old friend, Colonel (now Brigadier) Lethbridge-Stewart, and some old enemies, the Cybermen.