Doctor Who: The Armageddon Factor
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
Tom Baker
The Doctor
Mary Tamm
Romana
John Leeson
K-9 (voice)
John Woodvine
Marshal
Lalla Ward
Princess Astra
Davyd Harries
Shapp
Susan Skipper
'Heroine'
John Cannon
Guard
Pat Gorman
Pilot
Harry Fielder
Guard