Gallifrey, world of the Time Lords. The Doctor has claimed the presidency of the planet (on a technicality, following events in the previous season's The Deadly Assassin) and his behaviour is even more eccentric than usual in other ways, too: he refuses to speak to Leela and seems only to trust K9. But has he really betrayed Gallifrey to a Vardan invasion force? And is there a further power behind the Vardans?

Doctor Who (1963) Season 15 Episodes...

• s15e01 - Horror of Fang Rock (1)
• s15e02 - Horror of Fang Rock (2)
• s15e03 - Horror of Fang Rock (3)
• s15e04 - Horror of Fang Rock (4)
• s15e05 - The Invisible Enemy (1)
• s15e06 - The Invisible Enemy (2)
• s15e07 - The Invisible Enemy (3)
• s15e08 - The Invisible Enemy (4)
• s15e09 - Image of the Fendahl (1)
• s15e10 - Image of the Fendahl (2)
• s15e11 - Image of the Fendahl (3)
• s15e12 - Image of the Fendahl (4)
• s15e13 - The Sun Makers (1)
• s15e14 - The Sun Makers (2)
• s15e15 - The Sun Makers (3)
• s15e16 - The Sun Makers (4)
• s15e17 - Underworld (1)
• s15e18 - Underworld (2)
• s15e19 - Underworld (3)
• s15e20 - Underworld (4)
• s15e21 - The Invasion of Time (1)
• s15e22 - The Invasion of Time (2)
• s15e23 - The Invasion of Time (3)
• s15e24 - The Invasion of Time (4)
• s15e25 - The Invasion of Time (5)
• s15e26 - The Invasion of Time (6)

Doctor Who (1963) Show Summary

Doctor Who is the longest-running science fiction TV series in history, airing initially from 1963 to 1989. Doctor Who is about ideas. It pioneered sophisticated mixed-level storytelling. Its format was the key to its longevity: the Doctor, a mysterious traveller in space and time, travels in his ship, the TARDIS. The TARDIS can take him and his companions anywhere in time and space. Inevitably he finds evil at work wherever he goes...