Doctor Who - The Armageddon Factor (6)

Seizoen: 16 - Aflevering: 26 / 507 - Eerst uitgezonden: 24 februari 1979 - Episode ID: 75927

The Doctor and the Shadow have their final confrontation to take control of the Key to Time. Completing it may entail an awful sacrifice. And the Black Guardian will do anything to obtain it and plunge the Universe into chaos.