Aanbo examines the broken vials, but isn't sure that there's enough "unquaffed" liquid on any of the glass shards to provide more of a sample than he has already.
In addition to the various things that were on the table (human skulls, purple candles, silver bowl, stained black tablecloth), Ogbar notes that Kaufra was holding a mace that was glowing brightly when he was still "alive." Those things are available to retrieve, as well as any of the Pae medallions that were the only parts of the Heralds that didn't crumble to dust when the ritual was disrupted (there are eight here, in among the piles of dust scattered between the two third-floor rooms).
Whether or not you retrieve any of those items, it sounds like that party wants to follow the earlier plan. The group drags one of the benches over to the stairwell and pushes it down. This triggers the spikes after a few seconds, and the spikes on one side of the stairwell are blocked as they THUNK into the thick wood. Then, as the spikes are retracting, members of the party hustle down the stairs before the trap is set off again...which it is, as the weight of the bench remains on the stairs. Every five seconds or so...THUNK!
From the largely-unexplored second floor, the party heads down the curving staircase and out the front door, barely noticing the delicious smell of the prepared supper in the dining room this time.
The party can take a rest here, lulled into relaxation by the distant, slow rhythm of THUNK...THUNK...THUNK heard faintly from inside. Healing requires the use of spells, potions, or applying a use of a healer's kit (which at least one of the party members has) to spend your hit die (if you still have one). Let me know what you do.
