The chamber contains two pedastals, each with an inscription and several items upon them:

Pedastal 1

"Pieces of your brief earthly existence."

• bit of cloth
• pipe for smoking
• quill pen
• small leather pouch
• everburning candle

Pedastal 2

"To bring myself closer to your essence."

• magical scroll (rolled up)
• masterwork dagger
• silver comb
• incense burner with 3 blocks of incense
• everburning candle (again)

The pedastals are blindingly magical.  We ponder this for a while, then decide to leave well enough alone until we have a better idea of what's going on.  Evinarius spots a secret door out of the room, so we take it.  It leads into a room where the major point of interest is a bookshelf, sealed behind magical glass.  Above the shelves are a series of pegs, each of a different color.  On the opposite ends of the pegs are the letters "EVIL TO GOOD" (including the spaces).  We try inserting them in a couple of different orders, but nothing happens, and we give up.

Searching the room reveals two more secret doors, one of which leads into the Ocular Tyrant's viewing chamber (now sans Tyrant).  So there's no need to go through that anti-magic room again.  The other secret door leads to a room populated by demonlings, which we kill after a nasty fight.  The corridor continues to a door that forms part of a trap - the entire room beyond is able to turn on its side, dumping you onto spikes.  We use a corpse to trigger the trap and note that the doors shut when the trap is in operation.  Deducing that opening the door will break the trap, we do so.  Yay us!  Now we just have a 15 ft climb down and up again to cross this area.

Onward, we enter a room where there is a 'heartbeat' like noise, together with a dais, demonic statues that seem to twitch, and bleeding walls.  We surmise this is A Bad Thing, and move on, finding a room full of zombies which we kill ... several times.  For there are mirrors on the walls of the room, with shades trapped in them.  A few rounds after a zombie is destroyed, one of the shades is drawn from the mirrors into the corpses, and reanimates it.  We killed all the shades.

The next chamber was unstable, so we moved on, finding a room where a huge tree had overgrown most of it - including stairs leading down.  A voice asked "Where does the shadow lie?" but we had no suitable answer for it.  The chamber/tree had an aura of spiritual power and conflict to it.  We found two secret doors: one led to more stairs heading down; the other to locked doors with a horse emblem (a favoured symbol of the lord who built a castle on this site) upon them.