After her husband throws her out with one battered suitcase and only thirty-six dollars, Wren Calloway answers a strange notice: “Wanted—a mother for my son.” At Blackvale Manor, a line of polished candidates waits to be chosen. But Milo, the guarded little boy who has rejected every woman before her, walks past them all and points to the rain-soaked stranger. “I want her to be my new mother.” To survive, Wren accepts Damian Voss’s offer: a $100,000 marriage contract, separate floors, and no real intimacy. Yet her patience reaches Milo in ways money never could. As the boy begins to eat, sleep, walk, and smile again, the feared and powerful Damian finds his own defenses falling with his son’s. When Wren’s cruel ex returns and the secrets of the forbidden third floor begin closing in, everyone expects Damian to cast his unwanted bride aside. Instead, he stands before them all and calls her his wife. The marriage began as a deal for Milo. But his son chose Wren first—and Damian may be the one who can never let her go.