A master of literary transformation, Pulitzer Prize-winner Steven Millhauser turns his attention to the transformations of love in these three hypnotic novellas. While ostensibly showing her home to a prospective buyer, the narrator of “Revenge” unfolds an origami-like narrative of betrayal and psychic violence. In “An Adventure of Don Juan” the legendary seducer seeks out new diversion on an English country estate with devastating results. And the title novella retells the story of Tristan and Ysolt from the agonized perspective of King Mark, a husband who compulsively looks for evidence of his wife’s adultery yet compulsively denies what he finds. Combining enchantment as ancient as Sheherezade’s with up-to-the-minute acuity and unease, The King in the Tree is Millhauser at his best