Deep space, some time in the future. Still following the Black Guardian's orders, Turlough sabotages the TARDIS, forcing an emergency fusion with an apparently deserted starship. But the ship is headed for the notorious plague colony, Terminus. Surrounded by plague victims and space pirates, is the Doctor too preoccupied to notice the greatest threat of all - a threat connected to the position of Terminus at the exact centre of the universe?

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...