The Marquis's Second Chance: An Enemies to Lovers Regency Romance (Lords and Ladies of London) by Monica La Porta

Second chances can lead to dangerous affairs of the heart… They were once lovers who parted in bitterness and betrayal. Now they are enemies and can’t resist each other. Edith, Lady Carruthers, has everything a woman could ever want: beauty, wealth, and power. But she is also trapped in a loveless marriage with a cruel earl who treats her like a trophy. The only man who ever made her feel alive was Ambrose, the now dashing and rebellious Marquis of Camber. But she rejected him for a title, and he never forgave her. Ambrose has spent the last ten years trying to forget Edith. He has become a notorious rake and duelist, courting danger and scandal at every turn. He still burns for her but also hates her for breaking his heart. When the Earl of Carruthers dies under mysterious circumstances, Ambrose and Edith are thrown together again. The old flame between them reignites, but someone is playing a dark game with them—new and old enemies who want to ruin them both. Can they overcome their pride and their enemies? Or will they lose their love and their lives?