Addison O'Henry has no idea magic is real or that the fragile peace between the magekind-humans who can use magic-and demons is about to shatter. All that changes the day she's abducted by one of the magekind. After a ritual murder goes horribly wrong, Addison ends up with demon-sourced magic that nearly kills her. But for the intervention of demon Harsh Marit, she might not have survived. Though Harsh does what he can to help her return to what used to be normal, they both know her life will never be the same. With corrupt mages threatening them both, her honor requires her to help Harsh and the demon warlord he serves. If that means accepting her power and the high rank it confers on her, so be it. Now her once distant relationship with Harsh turns hot and immediate as the two of them explore the dark passion of a forbidden relationship. My Darkest Passion is Book 5 in the My Immortals Series, set in a world where demons are real and the people who have used magic to protect innocent humans aren't always in the right.