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.
Quest roles:
Lalla Ward(Romana II), John Woodvine(Marshal), Davyd Harries(Shapp), William Squire(The Shadow), Barry Jackson(Drax), Valentine Dyall(Black Guardian), Ian Saynor(Merak)