Lincoln Black is nogitsune—a “field fox” cast aside by his family, an outsider among the hidden community of American kitsune descended from the shapeshifting fox-wives of Japanese folklore. When a curse pushes his harmless taste for his lovers' vital energy toward monstrous, uncontrollable hunger, Linc is forced back to the one place he’d—almost—rather die than go for help: home. The first night back in town, a cousin he doesn't know defies clan politics to enter his dreams. Wouldn't you know, he wants to strike a bargain: Find a stolen piece of a stranger’s soul, and he’ll help Linc break the curse. That help comes in the form of Delia, a geomancer who knows every inch of the city, and whose energy Linc finds dangerously tempting. It would be too easy to lose his head, and drain her life away with no more than a kiss. Armed with a key to the magical pathways hidden behind the mundane world, Linc's own sly magic, and a will o' wisp with an attitude problem, they search for the broken piece of soul. Too bad they're not the only ones looking for it. With his self-control slipping, Linc finds himself indebted to a cousin he can't trust, running afoul of more than one god, and putting Delia in danger just by wanting her. He's looking at a jacked-up choice: Die to keep the only person who cares for him safe, or risk becoming a monster straight out of Japanese fairytales.