In the haunting ruins of Almerry Castle, scarred by war and shadowed by secrets, a chance encounter between a spirited woman and a war-weary soldier ignites a passion that defies history's wounds in Passion's Lasting Promise, a Regency tale of love's enduring resilience.

Daire Claymore, Duke of Claymore, does not understand why he is so drawn to Moonstone Landing, the sleepy village on the coast of Cornwall. He has all the wealth and power any man can want and women who will come running to warm his bed at his slightest nod. He is used to getting whatever strikes his fancy. Except he cannot coax, bribe, buy, or get the impertinent Brenna Angel. Not that he wants her, although she is stunning and irresistible in an irritating way. He is merely negotiating to purchase a property owned by the stubborn beauty.

Spirited debutante Lady Olivia McLeod, cherished daughter of the Duke and Duchess of Strathaven, has two interests: solving mysteries and winning the love of her rescuer and secret crush, the infamous Duke of Hadleigh. When Livy joins Lady Charlotte Fayne's charity for young ladies and discovers that it is a front for a covert investigative agency, she is thrilled. Livy dedicates herself to solving a deadly case. Little does she realize that the path to danger will also lead to her heart's deepest desire.

When Lady Henley Killigrew's father dies and his title of earl passes to a not-so-friendly cousin who wants her and her two younger sisters out of their elegant London townhouse, she takes them to Moonstone Cottage, a lovely manor house they inherited from a maiden aunt in the Cornwall seaside village of Moonstone Landing. But their funds are limited, and the new earl is a stingy guardian who will not loosen the purse strings to allow her to properly maintain herself and her sisters in their new home. The only way to save them all is for her to marry.

The wedding-night death of her much older husband left Tess Townsend the Dowager Duchess of Wansford—and still a virgin. Now she and her two best friends investigate London’s most scandalous crimes, and while Tess longs to experience physical pleasure for herself, she can’t risk losing her treasured independence.