Elena Michaels is a self-described "mutt," a werewolf who left her secretive pack in upstate New York for a life among humans. In the year since she relocated to Toronto, she's embarked on a career as a journalist and begun a pleasingly mundane relationship with a decent man. All this is jeopardized when she agrees to help her old packmates hunt some troublesome mutts who are converting common criminals to werewolves and leaving a trail of conspicuous carnage. Reunited with her former lycanthrope lover and forced into brutally predatory confrontations, Elena finds the call of the wild subtly reasserting itself. Armstrong prepares readers for her tale's twists with several key revisions of werewolf lore the werewolf taint is mostly hereditary, and werewolves can be killed as easily as any human or wolf. Her true achievement, though, is her depiction of werewolf nature in believably human context. Elena's feral sensibility, like her psychological vulnerabilities, seems a natural outgrowth of her abusive childhood, and her relationship with the pack is that of any prodigal child to a close-knit family. The sensuality of Elena's transformations and the viciousness of her kills mesh perfectly with her tough personality.