Romana's professional clarity and Time Lord confidence increasingly strained by the Great One's archaic vampire threat and the need for brutal action against long-time associates.

Aukon reveals his true identity as O'Connor and exposes his grotesque immortality, empowered by servitude to the Great One. He wields Adric's capture as leverage, threatening to sacrifice the Doctor …

Tarak attempts to exploit a guard changeover to secure the Doctor and Romana’s escape but is immediately recognized by the veteran sentinel. The guard’s recall of Tarak’s rebel history ignites …