In Blood Omen 2, Umah was captured by the Sarafan in the Industrial Quarter. She was imprisoned in the Sarafan Keep, awaiting execution.
Vorador was anxious to save Umah's life. He sent Kain to the Upper City to talk with the Bishop of Meridian; the Bishop knew of a way for Kain to infiltrate the Sarafan Keep, and, with this knowledge, Kain would have a better chance of successfully rescuing her. Kain was surprised that a bishop would ally with the Cabal. Vorador explained that the Bishop's faith in an afterlife was weak, and he sought to prolong his existence with a reward of vampiric immortality. As an older man, it appeared he had become increasingly aware of his own mortality, and feared death.
Kain encountered Marcus shortly after entering the Upper City. The traitor vampire used his Dark Gift: 'Charm', to read Kain's mind, and learned of Kain's intention to find the Bishop. A race followed between the two vampires, as Marcus threatened to kill the Bishop before Kain could reach him.
Both Kain and Marcus headed for the Bishop's manor. When Kain arrived there, the place was overrun by Sarafan troops, but - with a bit of threat and persuasion - the Bishop's butler pointed Kain to the cathedral. He said the Bishop had fled there, where he thought he would be safe.
Kain finally found the Bishop at the Upper City's cathedral, but he was too late. Although the Bishop still lived, Marcus had enslaved him, preventing him from speaking. Kain had to kill Marcus to free the Bishop from his influence. When Marcus was dead, the Bishop thanked Kain, and showed him how to get into the Sarafan Keep, despite his belief that it was "a fool's errand, to enter the very maw of the beast".