'A great storm is coming, ' the British ISIS messenger warns. 'As the Crusader seeks to destroy the lands of the Prophet, so we will lay waste a great city. Your greatest power will be our greatest weapon.' Detective Kate Bowen works scant clues to foil a looming ISIS attack. Nobody knows the when, where, or how the terrorist cell will strike. All Kate has is an insatiable thirst for justice and a hard-boiled surveillance team. As her mother is struck down and clings to life by a thread, a faceless specter from Kate's past emerges threatening biblical revenge. Her transgression is unspoken, the danger unknown. With explosions rocking her city of Dublin and her personal life in tatters, can Kate strike back at her nemesis and save a metropolis from ruin before a ticking clock hits zero? - Niamh Boyce, the No. 1 bestselling author of Her Kind and The Herbalist. Andrea Carter, author of the best-selling Inishowen Mysteries series.