Pretty much what we expected

The "questors" begin to show up. Drostan is able to see astrally that many of them carry the same mark as Morgue, an astral eye tattoo somewhere on their bodies. After much discussion, we decide to let Anarchon perform the ritual. Then, as they come to collect us, Arumvandar gets a good look at them and announces that "If they're questors of Garlen, then I'm a dirty dwarf."  Which, makes absolutely no difference to our plan, apparently.

To cut a long story short, the ritual summons the horror that has been stalking us, and cultists begin pouring down into the Kaer. So when we left off, Anarchon is dead, we have a freshly reanimated horror on one side of us, and a small army of horror cultists on the other side. On the plus side, quite a few of the cultists are injured because Viran was able to get an icy surface cast on the stairs as they were coming down.

So going forward, getting the number of cultists down to a manageable number is the first priority so we can focus our efforts on the horror. We also have to ensure that Morgue isn't controlled by the horror, as he has that horror mark on him.