Hollow Halls Generator

The idea of the party wandering through a secret passageway in the royal castle and scooping up quest seeds like crazy sounds fun to me.  I feel like you could use this with Red and Pleasant Lands quite well, but it should fit in any fantasy castle.

The passageway itself modulates in size and shape wildly, as it was built to fit into the changing architecture of the castle.  Every 10 mins of moving silently down the corridor, the party has another opportunity to eavesdrop or look in. 

What is the party looking through? 1d6

1. Portrait on the wall with eyeholes
2. One way mirror
3. Camera Obscura built unobtrusively into the wall
4. Small gap in the stone
5. Nothing, the party just hears voices through thin stone.
6. A Telescope set up through a small window and pointed at a nearby tower. The party can see the people talking but not hear them.

What is it? 1d6

1. Two guards are discussing rumors of a coup lead by the captain of the guard.  They are debating if they should join.
2. The prince/princess meeting with a secret lover.
3. A high ranking nobleman (with heavy gambling debts) and master of the mint are discussing a plan to adulterate the gold currency.
4. The ambitious court wizard's assistant murders the court wizard right then and there.
5. Manchurian Candidate.  The King is meeting with traditional enemies of the kingdom and has been in their pocket this whole time.
6. A secret meeting of influential Guildfolk and nobility plot to overthrow the king after his recent socialist and radical moves.

Complication 1d6

1.  Just as the conspiracy gets to the good stuff, a pair of young lovers looking for a secluded spot stumbles into the hollow walls the party is in.  The woman will scream if threatened, and the man is slightly drunk and wants to look cool. 
2. The party finds a notebook, cigarette butts and snacks.  Someone else is on this case and has been coming here to gather dirt.
3. A wandering mischievous ghost takes an interest in the party.
4. "Say, have the portrait's eyes always moved like that?" (Or equivalent)
5. The party cannot see one of the conspirators, but they are identifiable from a distinctive speech pattern.
6. Spider Attack. - Huge spiders live in the hollow walls.  Remember to be quiet!

Roll for monsters every 10 mins.