Finding herself abandoned after the death of her father, Leandra Harcourt takes a chance on a dark stranger at a small inn. Married, she learns about her husband during his extended absences, discovering more truth and mystery than she ever could have dreamed. The Duke of Derringer is feared and reviled wherever he goes; he is a man not to be crossed. Finding himself suddenly in need of a wife only interferes with the plans he has already set in motion. Vowing to marry the first woman he meets, he stumbles upon Leandra Harcourt, desperate and alone. With only sporadic visits home, Derringer finds his wife intriguing, baffling, and oddly desirable. In her prosaic attitude and calm demeanor, he discovers a peacefulness that he's never known in his life and knows he will never find again. While facing a nameless assassin, his search for his missing cousin intensifies. Little does he realize that in reaching his goal, his enemies may reach theirs, endangering his new bride as well.