Upon arriving from a secret passage to the Sarafan Keep, Kain was contacted by Vorador (via the Whisper) and told that Umah is being held on top of the Keep and that if Kain encounters the Sarafan Lord, he should run away immediately. Kain does not take kindly to the advice concerning the Sarafan Lord and disregards it as cowardice.
Kain enters the keep using the Dark GiftCharm to gain access to the servants quarters and advances up the levels of the Keep towards the roof.
Kain is assisted at one point by a lady who works for the Cabal . However, the Lady's assistance is not for charity as Kain is demanded to kill Artemis, a nobleman who sided with the Sarafan (though it is hinted there may be a more personal reason for this). After reluctantly carrying out the assassination, the lady deactivates a Ward Gate, enabling Kain to advance to the upper levels and reach Umah's prison at the top of the Keep and free her. However, the Sarafan Lord stopped them outside the prison. Realising that the Sarafan Lord has possession of the Soul Reaver, Kain attempts to fight the Sarafan Lord. However, before they are struck down, Umah teleports herself and Kain to Sanctuary .
Back at Sanctuary, Kain tells Vorador of his encounter and confesses that he underestimated the Sarafan Lord's strength. Umah then tells the vampires present about a place in the Industrial Quarter that houses a magic portal as well as the Nexus Stone. Kain pledges to fetch the stone as well as fight the Sarafan Lord for the Cabal[Blood Omen 2].
Kain appears not to be the only person to have used the secret entrance; several Thieves are found in the lower/servant levels, and a makeshift barracks in placed in the basement, presumably to counter this. Kain can also frequently observe conflict between thieves and the Sarafan[Blood Omen 2] .
like the Upper City the Sarafan Keep has several water features, likely fed from the cistern/pool in the basement, this cistern is the first place where 'actual' flying animals - bats (which will later be seen in the Canyons )- are seen in Blood Omen 2, (the 'birds' above earlier levels are actually circling semi-transparent shadows). The pool also contains (when drained), several somewhat deformed skeletons and skulls (these may be Hylden remains)[Blood Omen 2].