ActionAdventureDramaScience FictionTV Movie

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.

Credits

Tom BakerThe Doctor

Mary TammRomana

John LeesonK-9 (voice)

John WoodvineMarshal

Lalla WardPrincess Astra