What if the material world were but the tip of the iceberg -- a single realm in a vast sea of infinities, each holding secrets deeper and more frightening than the one before? What if an alliance of supernatural beings -- a Cabal of spirits, trolls, vampires and wizards -- ran it all, from the Post Office to the Godhead itself? What if the real history of the world were nothing but a twisted tale of conspiratorial weirdness, specifically engineered to hide those realities from you?
Ask no more, because it's all true. And you lived here all along and never had a clue. And you were probably better off that way, because the Cabal is the good news. They might control minds, suck blood, and use human empires as pawns in their games, but at least they look out for Creation. In a way, that makes them the good guys.
Don't ask about the bad guys . . .
GURPS Cabal also covers a detail cosmology based on the Kabbalah's sephiroth, a detailed Hermetic magic system of correspondences and sympathy, information on the Cabal's masters and schemes, artifacts, gods and monsters.
