Murder at Mondial Castle - The Discreet Investigations of Lord and Lady Calaway, #1

Adelia's broken free of the restraints that Victorian society puts on a woman. By using her wit, unconventional intelligence and good humour, she's risen to marry an earl who dotes on her; she's raised and married off seven beautiful daughters; what more is there for her now? What, indeed. Adelia's looking for a new adventure. She's not ready for her twilight years of slumber just yet. Then her daughter's friend is found brutally murdered in the grounds of Mondial Castle - in the company of a man who is not her husband.
That man is the Marquis of Mondial but he's also injured and obviously above suspicion. Yet his subsequent peculiar behaviour soon sets fashionable tongues wagging. Adelia negotiates the gossips of the drawing room while her husband Theodore wrestles with the other gentlemen and their foibles. Adelia and Theodore are shocked as they peel back layers of deadly secrets in the household of the castle but the truth at the heart of it threatens their own daughter's marriage .
and their whole family's place in society. Unmasking the murderer is impossible alone but working as a team, they are unique. And unstoppable.