Vivian Nox is the half-demon daughter of the fallen angel, Lucifer, and she has an affinity for souls. As the owner of a pleasure house, Nox uses her power to give her clients what they want most, but when Caedus and Balthazar stride through her door, she recognizes them as her soul's desire.

Caedus and Balthazar are both members of the Dark Guard, a group of demons tasked with protecting their kind from the sorcerers that would bind them and use their powers in the human realm. But membership in the Dark Guard isn't the only thing Caedus and Balthazar share: they also share the love of the same female.

Iliana is everything a male could want, but everything changes when she takes her own life. Devastated, Caedus turns cold, denying anything resembling the softer side of emotion, while Balthazar struggles to hold the two of them together.

Still haunted by Iliana's death, Caedus isn't ready to repeat history, but when one of Nox's pleasure slaves goes missing, he finds himself unable to turn away her request for help.

Their search reveals a killer loose in Hell, but that isn't what worries Caedus. As he and Balthazar spend more time with Nox, Caedus begins to suspect that she won't be happy with anything less than his soul.

Warning: This audiobook contains vivid descriptions of sex and is intended for mature audiences.