Kieran Hale is going to die.
According to the cards, the tea leaves, and every witch, medium, and psychic in New Londinium, he has less than a month to live. With no solution in sight, and death haunting his every step, Kieran knows that he must go to drastic, and dangerous, measures, if he wants to live.
A demon could tether his soul to his body, and to the living world. Even if summoning is forbidden, a taboo punished by a fate worse than death, Kieran is willing to take the chance. But when he calls forth a demon known only as Argent, he finds that nothing is as he thought.
As for Argent, he wants only one thing - to live in the human world. But to stay, he must convince Kieran to bind their souls.
Permanently.