In Everything in This Country Must, his fourth book, Colum McCann turns to the "troubles" in Northern Ireland and reveals the reverberations of political tragedy in the most intimate lives of men and women, parents and children. In the title story, a teenage girl must choose between allegiance to her Catholic father and gratitude to the British soldiers who have saved the family's horse. The young hero of Hunger Strike, a novella, tries to replicate the experience of his uncle, an IRA prisoner on hunger strike. And in Wood, a small boy does his part for the Protestant marches, concealing his involvement from his blind father.