Butcher Bird by Richard Kadrey

Spyder Lee is a happy man who lives in San Francisco and owns a tattoo shop. One night an angry demon tries to bite his head off before he’s saved by a stranger. The demon infected Spyder with something awful – the truth. He can suddenly see the world as it really is: full of angels and demons and monsters and monster-hunters. A world full of black magic and mysteries. These are the Dominions, parallel worlds full of wonder, beauty and horror. The Black Clerks, infinitely… (more)