A notorious scoundrel, the right Honorable Nicholas Bourne has spent years in the East Indies amassing a fortune through questionable means. Still, his loyalty to his older brother, Langdon, and his childhood friends remains true and trusted. But when Lady Sophia Southwell, the woman promised to Nicholas’s brother, seeks his help on a dangerous mission, he is troubled—and torn. Unable to dissuade her from her quest to find a killer, he vows to keep her safe. This makes his mission the hardest test of his wits, honor, and skill. For Sophia is the secret love of his life.

For years, Sophia has planned her daring act of revenge against her mother’s killer. She has painstakingly prepared herself by studying the criminal mind. Now she knows that the moment is right and that Nicholas is the man to help her. But she doesn’t count on the reckless temptation of his rugged sensuality or the captivating intensity in his deep eyes. When desire and emotion intoxicate her as they venture together into the darkest corners of London’s underbelly, Sophia must contend with a yearning even more powerful than the quest for vengeance: the call of love.