What if the one you love is also the one you are sworn to kill? Arabella 'Bel' Horden is a mischievous, pugnacious thirteen-year-old. The youngest daughter of a Northumbrian squire and magistrate, she is wracked by guilt after a careless haystack fire leads to the wrongful hanging of an English army deserter. Sent to boarding school in Yorkshire after another unbecoming act of disobedience, Bel blossoms into a beautiful and quick-witted young woman. Nathaniel 'Nat' Wilson is ill with fever when his twin brother is falsely accused and hanged for the fire started by Bel. Accursed by his mother for the tragedy, he is reluctantly sworn to vengeance against the Horden family. A peace-loving boy, Nat temporarily escapes his mother's maddened demands through pursuit of his studies in Cambridge. Years after the violence that first juxtaposed their lives, Bel and Nat's paths finally cross when Nat arrives in Northumberland to discover what he can of the Horden family and their role in his brother's unfortunate death. As a second Scots invasion sends the land into chaos, will love triumph as vengeance is thwarted?