Tegan steers the TARDIS to the planet Manussa, without meaning to - but why? And is it a coincidence that the planet is about to celebrate the 500th anniversary of the expulsion of the insidious Mara?

Doctor Who (1963) Season 20 Episodes...

• s20e01 - Arc of Infinity (1)
• s20e02 - Arc of Infinity (2)
• s20e03 - Arc of Infinity (3)
• s20e04 - Arc of Infinity (4)
• s20e05 - Snakedance (1)
• s20e06 - Snakedance (2)
• s20e07 - Snakedance (3)
• s20e08 - Snakedance (4)
• s20e09 - Mawdryn Undead (1)
• s20e10 - Mawdryn Undead (2)
• s20e11 - Mawdryn Undead (3)
• s20e12 - Mawdryn Undead (4)
• s20e13 - Terminus (1)
• s20e14 - Terminus (2)
• s20e15 - Terminus (3)
• s20e16 - Terminus (4)
• s20e17 - Enlightenment (1)
• s20e18 - Enlightenment (2)
• s20e19 - Enlightenment (3)
• s20e20 - Enlightenment (4)
• s20e21 - The King's Demons (1)
• s20e22 - The King's Demons (2)

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...