This Week in USA
The Invasion of Time: Part One (4Z1)
Last updated 24 June 2026
7:30pm-8:00pm EDT (23:30 GMT) < > « »
Retro TV
Featuring: Tom Baker, Louise Jameson, John Leeson, John Arnatt, Christopher Tranchell
After returning to Gallifrey to claim his position as president, the Doctor strangely appears to turn traitor.
Synopsis Source: TVPassport listings
Broadcast Source: Retro TV