This Week in USA
The Armageddon Factor: Part One (5F1)
Last updated 24 July 2026
7:30pm-8:00pm EDT (23:30 GMT) < > « »
Retro TV
Featuring: Tom Baker, John Leeson, Mary Tamm, Lalla Ward, John Woodvine
The Doctor and Romana's search for the Key to Time leads them to the warring planets of Atrios and Zeos.
Synopsis Source: OnTVTonight listings
Broadcast Source: Retro TV