Abslom confesses a Daak secret. Alice develops a bond. The Squire recovers a memory. And the Doctor discovers the horrific truth about how The Then and The Now has been tracking them - and he doesn't like it one bit. As the universe closes in around them, is escape even possible?
According to one account, the Master had the appearance of Roger Delgado while on Gallifrey. According to another, he had Anthony Ainley's likeness. According to another one, the one with James Dreyfus's appearance was the incarnation who ran away from Gallifrey.
While fighting to extend his life at the end of his regeneration cycle, many bodies were possessed by the Beevers incarnation, but all kept somehow reverting to his real being until he finally regenerated into the MacQueen one. Hence, these sections cannot be strictly chronological