SEASON 20

Arc Of Infinity

First Aired: 1983

Snakedance

​First Aired: 1983

Mawdryn Undead

First Aired: 1983

Terminus

First Aired: 1983

Enlightenment

First Aired: 1983

The King's Demons

First Aired: 1983

The Five Doctors

First Aired: 1983