Doctor Who: The Armageddon Factor (1979)
The final segment of the Key to Time is at the heart of a devastating war between neighbouring planets Atrios and Zeos. The Fourth Doctor discovers that a sinister entity is manipulating events and the cost of obtaining the final segment may be more personal than he imagined.
- Release Date: 1979-02-24
- Runtime: 2h 30min
- Production Company: BBC
- Production Country: United Kingdom
- Director: Michael Hayes
