So far the only Gregory Maguire books I'd read were Wicked and its sequels but before one of his stories overtook the rest in popularity he had found a niche writing adult versions of a number of children's stories, not just The Wizard of Oz. Mirror Mirror takes on Snow White and the Seven Dwarves, relocating it to early 16th Century Italy and casting Lucrezia Borgia as the evil queen. He mixes historical figures with the supernatural with mixed results, so the poisoned apple becomes a holy relic that would have a fascination for the daughter of a Pope. Maguire seems a bit undecided about how to end the story of Bianca (the Snow White figure) so it's not entirely satisfying, although the Borgia strand does lead somewhere. Most interesting to me was his treatment of the dwarves, who are here elemental stone creatures onto whom Bianca projects an image that makes them look like little men. Not as good as Wicked, but much better than its sequels.