A very odd book - it falls into the post-apocalyptic category but one where the natural world is for the most part undamaged, but where technology has receded to pre-industrial levels in varying degrees and the greatly reduced world is populated by humans and genetically engineered humans & animals. The difference here however is that Kahn has scripted these critters to exactly resemble creatures from mythology and fantasy like griffins, vampires, centaurs, dryads, et al. but without rationalizing them in SF terms (like Philip Jose Farmer did with centaurs in the World of Tiers) so that things sometime seem like they have to operate as if by magic. There is no reason, say, for a dryad to remain bound to the vicinity of her home tree especially not if the tree was cut down and turned into a bed in a bordello, for instance. (And yes, from that last example, you can probably realize that the women in the book, whether active or passive characters, are mostly there as sex objects, so you've been warned. There is also a great deal of graphic visceral violence in the book in addition a good amount of sexual kink. It was written in Hollywood in the late 70's, so...