Something dark and primal slithers within. Tori Sapera's normal life ends the day she is kidnapped and offered up as sacrifice to the Sacred Mother. She wants answers, but the snake worshippers' ritual transforms her. Now, Tori is tormented by a creature within she cannot control, a primal animal drives every action, every feeling. Lucas Caelum, cop by day, guardian angel by night, is succulent temptation for her new baser instincts. Lucas has fought, helpless, as death has taken one charge after the next. Now Tori faces a fate worse than death, but can he save her? Can he save anyone? Together, Tori and Lucas search for answers, and a cure, but more secrets lurk behind every clue. Can they resist the cult's dark purpose, and each other, before it's too late?