November 1920. Dublin, Ireland. Verity's efforts to foil a contemptible plot by the traitorous Lord Ardmore and save countless lives—as well as the British government's reputation—has exposed her to detrimental scrutiny, bringing her contact with the Irish rebels to light. Crushingly, she finds herself incarcerated in Dublin Castle, the "Dread Bastille," where she must withstand interrogation from her own countrymen.

Despite her circumstances, Verity knows better than to talk—though decrying Ardmore to his face would be more than satisfying. For once again he has escaped culpability, scapegoating his associates. Her only hope is intervention from her shadowy superior. And yet, when rescue finally comes, Verity finds herself changed by what she has endured, perhaps for the worst.

Still, there's no time for respite or healing. Ardmore's latest nefarious objectives go beyond mere treason. Allegiances are shifting as the war between the Irish Republican Army and the British reaches a new fever pitch. If Ardmore is to be brought down, Verity and her husband must gather all the allies they can for one last stand. But just when victory seems assured, one shocking and vicious turn of events changes everything. Now Verity must decide where her loyalty lies. And it may not be on the same side as the man she's loved to the grave and back.