Angel of Darkness tells the story of Keenan, an angel of death whose job is to collect souls. For two thousand years, Keenan has never faltered in his duties, until he meets Nicole St. James. When the moment of her death arrives, Keenan hesitates and instead of taking Nicole, he touches the vampire attacking her. This act of disobedience casts him out of heaven.

Six months later, Keenan tracks Nicole to a bar in Mexico. To his astonishment, he discovers that Nicole has undergone a dramatic transformation—she's become a vampire. Now, she is the target of various enemies, including other vampires, demons, and shifters. Despite the chaos, Keenan is determined to protect her at all costs, even if it means all hell breaks loose.

Keenan's fall from grace is marked by his newfound human emotions and needs, all centered on Nicole, the woman who changed everything for him. As they navigate a world where heaven and hell are hunting them, Keenan and Nicole must learn to trust each other completely. Their bond defies the natural order, but some desires can't be contained.

Angel of Darkness is a thrilling tale of love, danger, and redemption. Will an angel go to extraordinary lengths to protect the woman he loves above all others? Get ready to find out.