“Penguin Decades” bring you the novels that helped shape modern Britain. When they were published, some were bestsellers, some were considered scandalous, and others were simply misunderstood. All represent their time and helped define their generation, while today each is considered a landmark work of storytelling. J.L. Carr’s “A Month in the Country” was first published in 1980. Tom Birkin, a damaged survivor of World War One, is spending the summer uncovering a huge medieval wall-painting in the village church of Oxgodby. Joined by another veteran, employed to look for a grave outside the churchyard, he uncovers old secrets that bear on his experiences of conflict.