100 Demons 18

My nostalgic rereading of 100 Demons gets me at last to volume 18. I think I was impressed by it first read through-- which means, yes, first three reads through. But if I made sense of it at the time, I can make none now. After the relative straightforwardness of vol 17, where only the grandfather story gave me any real trouble, this one is... oh dear oh dear. paleaswater, was this the volume that you didn't get, or that was unnumbered or something? Because I'm sure we'd have discussed it if you'd read it, in our usual 'what was that one about??' fashion.
( Spoilers for those who will probably never read these volumes )