Doctor Who - State of Decay (4)

Seizoen: 18 - Aflevering: 16 / 572 - Eerst uitgezonden: 13 december 1980 - Episode ID: 75964

Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world...?