The Duke's Obsession;

When a villain bent on revenge threatens their second chance at finding happiness, Christian and Katherine must fight against events from the past if they want a future together. A Regency novella.

Christian Fallon, the Duke of Aubrey, has never forgotten the woman he fell in love with six years earlier. Forced by his father to marry another, he endured a miserable marriage. Now a widower, he arrives in London with the intention of vanquishing his enemy, a man who is set on destroying Christian’s family. When he finds that his enemy is courting the woman Christian tried for years to forget, he conceives of a plan to take everything away from the man, including Katherine, the widowed Duchess of Westervly.

Katherine has intentionally caught the eye of the Viscount of DeWynter, a man she can barely tolerate, but her stepmother is missing, and clues lead to the viscount as having a hand in her disappearance. When Christian appears on the scene, she is torn between the two men; Christian, who has held her heart all these years, and DeWynter, whom she believes can lead her to her stepmother.