Ed: DMing; Paul: Zoozeki (high elf wizard 9); Scott: Smudge (shadar-kai rogue 7 / barbarian 2) and Martin (dwarf cleric 9); Dane: Tudo (dwarf cleric 9).
Last time, we had a big combat with a bunch of undead riders on undead horses while trying to rescue a surveyer (Bartas).
One suspicious statue remains whole. We move toward it.
The myrmidons who are still back in the bones room experience dread coming from the east side of the bone room. They yell, "Idolons, idolons. Myrmidons, form up!".
Tudo knows that idolons are ghostly spirits who protect a place to make sure no enemy defiles or plunders a place. If an enemy violates a place, they plunge into and animate a statue. Smudge and Zoozeki know about idolons too.
The myrmidons group up, trying to prevent the idolon from getting near a statue.
There are two idolons, barely visible. The myrmidons kill one. And hit other one as it pushes through their ranks.
The other group of myrmidons attack the whole statue at the east end of the room and severely damage it, then turn to kill the remaining idolon.
We ask Bartus if he know what's behind the southeast door. He says no. He says the hooded men (mind flayers) and the blond man (dragon) tortured him. They wanted to know the location of the of the lost treasure under the city of the ape men.
We open the secret door in the southeast corner of the room. A long corridor leads south. A beholder pops up! Smudge trows a coin at the "beholder" and it pops, infecting Smudge and Tudo with a disease.
Zoozeki (who was out of range but heard the incident) puts on his space helmet to keep the spores out.
Smudge runs into some kind of slime or ooze. Tudo and Zoozeki kill it with fire cantrips.