A princess with a scandalous secret. A duke desperate for a wealthy bride. A debutante torn between duty and passion. Newly widowed Princess Adelheid Kinsky thought she was free-until she learns of her abusive late husband's final betrayal. The son she believed dead, the illegitimate child of a forbidden love, still lives. To secure his future, she must marry within a month-without revealing the truth. Her best prospect? The Duke of Hartland, a notorious rake drowning in debt. Meanwhile, Hartland sets his sights on Olivia Fontenoy, an heiress whose fortune could solve all his problems. But innocent Olivia dreams of music, not marriage, and seizes the chance to perform in disguise at the King's Theatre-unwittingly ensnaring everyone she knows in scandal. As deception and desire collide, Olivia finds herself drawn to Hartland's closest friend, the quiet yet passionate Marquess of Lewiston-a man who offers her something far more profound than mere security. And for Adelheid, an unexpected alliance may hold the key to her dreams. With a surprising ending worthy of grand opera, The Soprano's Daring Duke is a sweeping Regency tale of love, risk, and the courage to defy expectations.