A producer at the BBC and mother to a new baby, Tessa is at work in Belfast when the news of another IRA raid comes on the air. Shockingly, news footage reveals Tessa's sister, Marian, pulling a black ski mask over her face. In this novel by the Edgar Award-winning author of Under the Harrow, Tessa is faced with impossible choices that will test the limits of her ideals and put both her sister and her own son in danger.