One valiant woman. One guarded man. A shared mission—and a love neither expected. To her neighbors, Charity Sinclair is just the charming, carefree daughter of a small-town Ohio postmaster. But behind the smiles and small talk, she’s a fierce abolitionist, secretly writing incendiary pamphlets under a pseudonym and using the post office as a vital stop on the Underground Railroad. Tavish Dunbar, a gifted architect, arrives with a government mandate to redesign the post office and lodgings. But he’s stymied at every turn by the cagey postmaster and his seemingly frivolous daughter. The more time Tavish spends with Charity, the more he suspects she’s hiding something dangerous—and the more intrigued he becomes. When a runaway’s escape triggers a perilous chain of events, Charity and Tavish are thrust into a fragile alliance. Pursued by a ruthless slave-hunter along the Ohio-Erie Canal, they must risk their lives—and their hearts—for justice, for freedom, and for each other.