On a dark, wet evening in Dublin, scientist and mother-of-four Eilish Stack answers her front door to find the GNSB on her doorstep. Two officers from Ireland's newly formed secret police want to speak with her husband, Larry, a trade unionist for the Teachers' Union of Ireland. Things are falling apart. Ireland is in the grip of a government that is taking a turn towards tyranny. And as the blood-dimmed tide is loosed, Eilish finds herself caught within the nightmare logic of a collapsing society - assailed by unpredictable forces beyond her control and forced to do whatever it takes to keep her family together.