"New York Times" bestselling author Keri Arthur returns to the enthralling Guardian World--and a twilight realm of danger and desire... Risa Jones, half-Aedh/half-werewolf, can enter the realm between life and death. She can speak to the dying and the dead, and she can see the reapers, collectors of souls. What she can not yet see is the identity of a stranger murdering women and draining their blood. Now Risa must summon her gifts to find him, even if it means putting her own life in danger. But Risa needn't look far. The killer knows who she is. He tells her his victims are infected by darkness and he's fated to destroy them. Fascinated by Risa, he engages her in a sinister game: the chance to save the life of his next victim by deciphering his series of clues. In a race against time, she enlists the help of the reaper Azriel. But as an attraction between them grows, so does the fear that the stranger's motives are only part of a larger, more dangerous stratagem--one that that has lured Risa and Azriel into the dark

When Risa loses the second key to hell, she angers several powerful people, and she’s starting to feel the pressure from all sides. She gets a visit from her father, who gives her an ultimatum: Get back the key or he will kill her friends. Risa also finds herself under the scrutiny of the vampire council, some of whom consider her a monster who should be destroyed. But they offer her a bloody bargain: Take on the lethal head of the council, Madeline Hunter, and others will support her. As the search for the keys to hell heats up, Risa realizes that she has no choice. For the sake of the people she loves, she must find the keys — and get rid of Hunter — before the second gate is opened and brings the world closer to all hell breaking loose