The Doctor has won his fight in the Matrix and revealed the assassin. But the Master is not defeated and sets a plan in motion that could destroy the Time Lords.
Quest roles:
Helen Blatch(Voice (voice)), George Pravda(Castellan Spandrell), Bernard Horsfall(Chancellor Goth), Angus MacKay(Cardinal Borusa), Peter Pratt(The Master), Erik Chitty(Co-Ordinator Engin), Derek Seaton(Commander Hilred)