After acquiring the signet ring and note, the party escorted Lady Venderborn into her vault.
An Iron Cobra guarded it, and was terminated.
A puzzle involving rotating a pillar to face busts of various monsters waylaid the party for some time.
When the puzzle was solved, the party discovered that the vault had been emptied of its liquid assets, but did contain documents indicating debts owed to the Vanderborn family.
Current assignment is to track down Vanthus.