What possessed Dr. Nielssen to bite a chunk out of a violent patient's shoulder in her efforts to subdue him? How could she smell the fear in those around her when the patient attacked? And what is this orange glow she saw when she was fighting him? Prince Wiktor Lupinski knows what disturbs Freydis the moment they meet, and in two hundred years he has never sensed such power in another life hunter. Neither has his sister Tekla, with whom Prince Wiktor has ruled the woods from their native Poland to the wilds of Siberia, stealing the life force of their victims as it escaped their butchered bodies. While Wiktor fears his attraction to this striking blonde newcomer, Tekla revels in the challenge, luxuriating in the delicious irony that Freydis herself is ignorant of beast lurking inside her. But when a fellow traveller turns up murdered in the snowy Alaskan woods, Freydis must embrace that emerging beast and harness the savagery she fears to fight these killer siblings. And even if she prevails, what must she become to survive?