In 'The Marquess's Mistress,' readers are transported to the scandalous world of Regency London. Lady Isabella, a daring young woman, finds herself entangled in a forbidden affair with two powerful marquesses. As she grapples with her own desires and the consequences of her actions, she must confront the true nature of love and passion. With its steamy romance and captivating plot, this book is a must-read for fans of Regency rivalry romance.