Pelgrane Press’s latest.
FEARFUL SYMMETRIES lets you play as English magicians in the interwar period who are trying to establish a perfect land, based on the mystical theories of William Blake. Alas, this is a campaign set in the Cthulhu Mythos, so it’s probably all going to go horribly wrong. Or worse: horribly right. That’s often even more fun.
Looks like it’ll be a good read. Maybe some day I’ll even get to run a game in it! Probably a con game; that’s usually my best bet for horror RPG playing.