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Serial: 5F Episode Nos. 500, 501, 502, 503, 504, and 505. Title: The Armageddon Factor
The sixth, final, and most important segment of the Key to Time is located on the planet Atrios, which is at nuclear war with it's twin planet Zeos. Somehow the segment is linked to the Princess Astra, and when she is abducted, the Doctor and Romana start a search that leads them to the master general on the planet Zeos: a computer called Mentalis, programmed to obliterate Atrios and to destroy everything before being destroyed. Can the Doctor and Romana complete the Key to Time before the agent of the Black Guardian destroys all?
This story is the last to feature Mary Tamm as Romana, and the first to
feature Valentine Dyall as the Black Guardian.
It is the last story in the quest for the Key to Time.
starring Tom Baker as Doctor Who, Mary Tamm as Romana, Valentine Dyall as the Black Guardian, and John Leeson as the Voice of K9. Written by Bob Baker and Dave Martin, Produced by Graham Williams, and Directed by Michael Hayes.
Originally transmitted from
DVD Features:
- Graphical menus, episode selection features, and scene selection features.
- Production notes subtitles.
- Photo galleries.
- Original 4:3 aspect ratio.
- Who’s Who actors’ biographies.
- Commentary track by actors Mary
Tamm (Romana), John Woodvine (the Marshal), and director Michael Hayes.
