Ruan Bettancourt, the Duke of Cynssyr, intends to marry London's most beautiful debutante. A case of mistaken identity forces him to marry her sister, spinster Anne Sinclair. Before long, he's head-over-heels in love with his wife while Anne is determined to make the best of her unwanted marriage. Can Lord Ruin convince Anne he's fallen in love?

All the widowed Lucy Sinclair Wilcott wants is to save enough money to move to a cottage of her own and keep her younger sister safe from the consequences of their father’s poor judgment. No one is more aware than she how thoroughly her first marriage to a prizefighter ruined her. She could not remarry if she wanted to. Then the Marquess of Thrale comes to visit and long-absent feelings of desire surge back.

Everything Lord Thrale believed about the beautiful Mrs. Wilcott is a wrong. The very last woman he thought he was interested in proves to be a brilliant, amusing, arousing woman of deep honor who is everything he wants in a lover, for the rest of his life.

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.